Abrégé

An oxide superconducting wire which has achieved higher superconducting characteristics by increasing the orientation of an MgO layer in an intermediate layer on which a superconducting layer is laminated. This oxide superconducting wire (100) is provided with a substrate (110), an intermediate layer (120) that is formed on the substrate (110), and an REBayCu3Oz (YBCO) superconducting layer (130) that is formed on the intermediate layer (120). With respect to this oxide superconducting wire (100), the intermediate layer (120) comprises an LaMnO3 layer (122) and an MgO layer (123) that is formed in contact with the LaMnO3 layer (122).

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• C01G 45/00 - Composés du manganèse
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines

Abrégé

　An oxide superconductor is provided with: a metal substrate; an insulating intermediate layer provided on the substrate; an oxide superconductive layer provided on the intermediate layer; a metal stabilizing layer provided on the oxide superconductive layer; and a plurality of thinning grooves formed using laser irradiation so as to divide the metal stabilization layer and the oxide superconductive layer along the longitudinal direction of the substrate, reaching from the metal stabilization layer through the oxide superconductive layer to the interior of the intermediate layer, while not reaching the substrate. The metal stabilization layer and the oxide superconductive layer are divided by the plurality of thinning grooves so as to form a plurality of filament conductors, and the width of the groove openings of the thinning grooves, in each of the plurality of thinning grooves, being equal to or greater than the width of the groove bottoms of the thinning grooves.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles

Abrégé

Provided is an oxide superconductor composition that makes it possible to increase film thickness, increase production speed, and decrease costs when producing a superconductor wire. The composition is for forming a REBaCuO-type oxide superconductor (wherein RE is at least one element selected from the group consisting of Y, Nd, Sm, Gd, Dy, Eu, Er, Yb, Pr, and Ho). The composition is applied to a base material, a preliminary firing treatment is performed after the application in order to form an oxide superconductor precursor, and a main firing treatment is performed in order to form an oxide semiconductor. The oxide superconductor comprises, as essential components thereof, an RE salt of a carboxylic acid that serves as an RE component, that does not contain a ketone group, and that has 3-8 carbon atoms, barium trifluoroacetate that serves as a Ba component, one or more copper salts that serve as a Cu component and that are selected from the group consisting of copper salts of branched saturated aliphatic carboxylic acids having 6-16 carbon atoms and copper salts of alicyclic carboxylic acids having 6-16 carbon atoms, and an organic solvent that dissolves the aforementioned metal salt components.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles

Abrégé

This RE-123 superconducting wire (10) is provided with the following: a substrate (11); an intermediate layer (12) provided on top of said substrate (11); and an oxide superconducting layer (14) that is provided on top of the intermediate layer (12) and comprises an oxide superconductor that can be represented by the compositional formula RE1Ba2Cu3O7−δ (in which RE represents one or more rare earth elements). A compound containing hafnium in the amount of 0.5-10 mol% is added to the oxide superconducting layer (14), and a hafnium-containing phase is dispersed throughout the oxide superconducting layer (14), forming flux-pinning sites. The a-axis ratio of the oxide superconducting layer (14) is at most 1.5%.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• C23C 14/08 - Oxydes
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles

Abrégé

A connection structure for connecting hollow formers (140) provided inside a superconducting cable (10), wherein the connection structure is characterized in that one end section and another end section of a hollow connecting conduit (145) are inserted into an open section (144) leading to a hollow interior section formed in a connection end section of each of the formers, the opposed connection end sections of the formers being welded together. The connection conduit (145) thereby ensures circulation of a refrigerant. Also, there is no incidence of the refrigerant circulation path being blocked when welding is performed in the connection conduit, allowing formers to be more easily connected.

Classes IPC  ?

• H02G 1/14 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour la jonction ou la terminaison de câbles
• H01B 12/02 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• H01L 39/04 - Conteneurs; Supports
• H01R 4/68 - Connexions à ou entre conducteurs supraconducteurs
• H02G 15/34 - Accessoires de câble pour câbles cryogéniques

Abrégé

A superconducting wire connection structure is adopted in which, in a section where the ends of a first superconducting wire (11) and a second superconducting wire (12) are spaced apart from and arranged across from each other, the third superconducting wire (13), which is narrower in at least one portion than the first superconducting wire (11) and the second superconducting wire (12), spans and connects the first superconducting wire (11) and the second superconducting wire (12) along the longitudinal direction of the first superconducting wire (11) and second superconducting wire (12). Thereby, it is possible to reduce degradation of the superconducting layer (3) by suppressing generation of heat caused by current flow concentration at the section where the third superconducting wire (13) is connected, and stable superconducting performance can be achieved.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines
• H01R 4/68 - Connexions à ou entre conducteurs supraconducteurs
• H02G 15/34 - Accessoires de câble pour câbles cryogéniques

Abrégé

A superconducting wire material connection structure is adopted in which a recessed portion formed by removing the superconducting layer (3) at the terminal (10a) of the superconducting wire material is filled with a filling material (9), and, in a section where the terminals (10a) of the first superconducting wire material (11) and the second superconducting wire material (12) are arranged opposite of each other, a third superconducting wire material (13) spans and connects the first superconducting wire material (11) and the second superconducting wire material (12) along the longitudinal direction of the first superconducting wire material (11) and the second superconducting wire material (12). Thereby, it is possible to prevent peeling and damage of the superconducting layer (3) at the terminal (10a) of the superconducting wire material, and troublesome decreases in semiconductor performance in the connection portion of the superconductor wire material are avoided.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• H01B 12/02 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• H02G 1/14 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour la jonction ou la terminaison de câbles
• H02G 15/34 - Accessoires de câble pour câbles cryogéniques

Abrégé

Provided is a connection structure for connecting superconducting cables (10) via an intermediate connection unit. A cable core (11) has an electrically insulating layer (20) in which insulating paper or the like is wound around a superconducting conductor layer (14). Any of the electrically insulating layers at both sides of a conductor connection section (S) formed by connecting a former (13) and the superconducting conductor layer has a taper shaped section (21) the diameter of which is reduced toward the conductor connection section. The taper shaped section is formed with a plurality of taper sections that change the inclining angles in stages so that a taper section closer to the conductor connection section has a smaller inclining angle. A reinforcing insulating layer (50) is provided between each taper shaped section.

Classes IPC  ?

• H02G 15/34 - Accessoires de câble pour câbles cryogéniques
• H01B 12/02 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes
• H01R 4/68 - Connexions à ou entre conducteurs supraconducteurs

Abrégé

A high-temperature superconducting magnetic sensor (1) having a superconducting layers (DL, UL) formed on a substrate, a superconducting quantum interference device (SQUID) (2) being formed on the superconducting layers (DL, UL); wherein the high-temperature superconducting magnetic sensor (1) has: a detection coil (6) that is formed on the superconducting layer (UL) and is directly connected to the inductor (4) of the SQUID (2); and an input coil (5) formed on the superconducting layer (DL), connected to the inductor (4) of the SQUID (2) and the detection coil (6) to form a closed loop (7), and magnetically coupled with the inductor (4) of the SQUID (2). As viewed from above, at least one turn of the input coil (5) surrounds the inductor (4) of the SQUID (2), or is surrounded by the inductor (4) of the SQUID (2). The width of the superconductor forming the inductor (4) of the SQUID (2) is 10 μm or less. A high-temperature superconducting magnetic sensor (1) in which magnetic flux trapping does not readily occur is thereby provided.

Classes IPC  ?

• G01R 33/035 - Mesure de la direction ou de l'intensité de champs magnétiques ou de flux magnétiques en utilisant des dispositifs supraconducteurs
• H01L 39/22 - Dispositifs comportant une jonction de matériaux différents, p.ex. dispositifs à effet Josephson

Abrégé

The invention relates to a liquid nitrogen cooling sensor device container and liquid nitrogen cooling sensor device, and effectively reduces low-frequency noise while maintaining the ease with which a probe can be inserted in and removed from liquid nitrogen. Said invention comprises: a thermally insulated liquid nitrogen holding container that holds liquid nitrogen; a sensor affixing member to a tip portion of which is attached a sensor that operates by means of the temperature of the liquid nitrogen; and an affixing buffer member for affixing the sensor affixing member to the thermally insulated liquid nitrogen holding container. A member having a buffer action in the liquid nitrogen is used as the affixing buffer member.

Classes IPC  ?

• H01L 39/04 - Conteneurs; Supports
• F25D 3/10 - Dispositifs utilisant d'autres agents froids; Dispositifs utilisant des récipients conservant le froid utilisant des gaz liquéfiés, p.ex. de l'air liquide
• G01R 33/035 - Mesure de la direction ou de l'intensité de champs magnétiques ou de flux magnétiques en utilisant des dispositifs supraconducteurs

Abrégé

The present invention relates to a superconducting single magnetic flux quantum integrated circuit device, and eliminates the return current from a bias current and the effect the bias current itself has on SFQ logic circuits in a chip. A bias power source line for supplying a DC bias current for the superconducting single magnetic flux quantum integrated circuit in a chip and a bias drawing power source line for recovering said DC bias current to the outside of the chip are provided, the end of the bias drawing power source line is connected to the ground surface of the chip via a resistive element made of a thin-film resistor having a plurality of resistance values of 0.1 milliohm to 1 milliohm near the superconducting single magnetic flux quantum integrated circuit laid out in the chip, and the DC bias current is drawn from a connection point with the ground surface.

Classes IPC  ?

• H03K 19/195 - Circuits logiques, c. à d. ayant au moins deux entrées agissant sur une sortie; Circuits d'inversion utilisant des éléments spécifiés utilisant des dispositifs supraconducteurs
• H01L 39/22 - Dispositifs comportant une jonction de matériaux différents, p.ex. dispositifs à effet Josephson

Abrégé

This RE-123 superconducting wire comprises a base material, an intermediate layer formed over the base material, and an oxide superconducting layer formed over the intermediate layer and including an oxide superconductor represented by the composition formula RE1Ba2Cu3O7-δ (RE represents at least one rare-earth element); the oxide superconducting layer having a compound including 0.5 to 10 mol% of Hf dispersed as an artificial pin in the oxide superconducting layer, and the thickness d of the oxide superconducting layer being greater than 1 µm and satisfying the electric current characteristic Jcd/Jc1 ≥ 0.9 (Jc1 represents the critical current density when the thickness of the oxide superconducting layer is 1 µm, and Jcd represents the critical current density when the thickness of the oxide superconducting layer is d µm.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• C01G 27/00 - Composés d'hafnium
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles

Abrégé

In this superconducting cable line, wherein a superconducting cable is connected to terminal connecting sections or an intermediate connecting section, an offset portion where the superconducting cable is disposed in a curved manner is provided close the terminal connecting sections or the intermediate connecting section. When it is assumed that the superconducting cable can move in the offset portion, an outer tube of the superconducting cable is fixed such that a maximum amplitude portion cannot move, said maximum amplitude portion having a maximum quantity of a move of the superconducting cable due to thermal expansion and contraction of a cable core.

Classes IPC  ?

• H02G 9/10 - Installations de lignes ou de câbles électriques dans ou sur la terre ou sur l'eau dans des chambres de câbles, p.ex. dans un trou d'homme
• H01B 12/02 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes
• H02G 15/34 - Accessoires de câble pour câbles cryogéniques

Abrégé

Provided is a heat treatment method which, in a TFA-MOD method, increases the superconductivity properties of a tape-form oxide superconducting wire to be produced. In the method, a cylindrical rotation body (12) is arranged in a cylindrical heat treatment space (11a) of a furnace core tube (11) in a heat treatment device (10) so as to be capable of rotation relative to a furnace core shaft (C). A film body of a superconductor precursor is formed on a tape-form wire (50), and the tape-form wire (50) is wound on a surface (12a) of the rotation body (12), said surface having multiple through-holes (17). A gas supply tube (13) supplies atmospheric gas from a position separated from and facing the film surface of the tape-form wire (50) wound around the rotation body (12). The separation distance (S) between the surface (12a) of the rotation body (12) and gas vent holes (20) of the gas supply tube (13) is 10mm to 150mm, and atmospheric gas which has been supplied to the tape-form wire (50) is discharged from inside of the rotation body (12) through a gas discharge tube (14) to outside of the aforementioned furnace core tube (11).

Classes IPC  ?

• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux

Abrégé

Provided is a heat treatment method which improves hydrogen fluoride gas exhaust efficiency and produces tape-form oxide superconducting wire having excellent superconductivity properties uniform in the length direction. In the method, a cylindrical rotation body (120) is arranged inside a cylindrical heat treatment space (111) of a furnace core tube (110) in a heat treatment device (100) so as to be capable of rotation relative to the furnace core axis (C). A film body of a superconductor precursor is formed on a tape-form wire (20), and the tape-form wire (20) is wound on a surface (121a) of the rotation body (120), said surface having multiple through-holes (124). A gas supply tube (130) supplies an atmospheric gas (6) from a position separated from and facing the film surface of the tape-form wire (20) wound around the rotation body (120). In the heat treatment space (111), partition plates (170) are arranged in the surplus space (111b) between the two ends of the rotation body (120) and the furnace core flanges (116, 118) of the furnace core tube (110), and the exhaust gas (6c), i.e., the gas after reaction with the film surface, cannot flow into the extra space (111b).

Classes IPC  ?

• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux

Abrégé

An insulated pipe (12) has a double structure comprising an insulated inner pipe (121) and an insulated outer pipe (122). A middle connection unit (20) has a double structure comprising an outer container (22) and an inner container (21). The insulated inner pipe and the insulated outer pipe penetrate the wall surface of the outer container and are pulled in at least to the wall surface of the inner container. The area between the insulated inner pipe and the insulated outer pipe is hermetically sealed by joining the pulled-in end of the insulated inner pipe and the pulled-in end of the insulated outer pipe. A sinuous tubular part (126) having a pipe wall that is thinner than the insulated outer pipe positioned outside the tubular part (126) is disposed on a section of the insulated outer pipe further inward than the wall surface of the outer container. A vacuum outlet (127, 222) for purging the air within the insulated pipe and the middle connection unit is disposed on the insulated pipe and the middle connection unit. As a consequence, it is possible to reduce the amount of heat entering the inside and to achieve high insulating properties.

Classes IPC  ?

• H02G 15/34 - Accessoires de câble pour câbles cryogéniques
• H01B 12/12 - Conducteurs creux
• H01B 12/14 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par la disposition de l'isolation thermique
• H01L 39/04 - Conteneurs; Supports
• H01R 4/68 - Connexions à ou entre conducteurs supraconducteurs

Abrégé

A termination connection is configured by being provided with: a low-temperature container filled with a refrigerant; a current lead for a conductor, one end of the current lead being immersed in the refrigerant while the other end is pulled out to a normal temperature section; and a movable connection terminal for a conductor, the movable connection terminal electrically connecting the current lead for a conductor with the superconductive conductor layer of a superconductive cable. The superconductive conductor layer of a superconductive cable, of which the ends are stripped, is connected to the current lead for a conductor via the movable connection terminal for a conductor. The cable core of the superconductive cable can move in the lengthwise direction and rotate in the circumferential direction while keeping the superconductive conductor layer electrically connected to the current lead for a conductor. Moreover, the cable core is horizontally supported within the low-temperature container. As a consequence of the aforementioned configuration, the thermal expansion of the cable core under a heat cycle is absorbed, thereby being able to provide a simplified termination connection of which the size is reduced.

Classes IPC  ?

• H02G 15/34 - Accessoires de câble pour câbles cryogéniques
• H01B 12/12 - Conducteurs creux
• H01B 12/16 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par le refroidissement
• H01L 39/04 - Conteneurs; Supports
• H01R 4/68 - Connexions à ou entre conducteurs supraconducteurs

Abrégé

Provided is an oxide superconductivity wire material, wherein pinning of magnetic flux, under an environment in which magnetic field is applied, can be conducted efficiently towards any magnetic-field applying angle direction, to secure a high superconductive property. The oxide superconductivity wire material (100) is provided with a metal substrate (110), an intermediate layer (120) formed upon the metal substrate (110), and a REBaCuO-system superconductive layer (140) formed upon the intermediate layer (120). RE comprises one or more elements selected from Y, Nd, Sm, Eu, Gd, and Ho. Oxide particles including Zr are distributed within the superconductive layer (140) as magnetic-flux pinning points (145), and the mole ratio (y) of Ba included within the superconductive layer (140) is, when the mole ratio of Zr is assumed to be x, within a range of (1.2 + ax) ≤ y ≤ (1.8 + ax), wherein 0.5 ≤ a ≤ 2.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles

Abrégé

Disclosed is a superconducting cable with low material costs and good withstand voltage performance and which can suppress dielectric loss. Specifically disclosed is an AC superconducting cable (10) with an insulating layer (5) on the external circumference of a conductor, and which is characterized by: the insulating layer (5) being formed by a first insulating layer (5a), a second insulating layer (5b) and a third insulating layer (5c), in order from the inside layer to the outside layer; the insulating layer (5) being impregnated with liquid nitrogen; the product of the dielectric constant ε1 of the first insulating layer (5a) and the dielectric loss tangent tanδ1 and the product of the dielectric constant ε2 of the second insulating layer (5b) and the dielectric loss tangent tanδ2 fulfilling the relationship ε1×tanδ1>ε2×tanδ2; and the product of the dielectric constant ε2 of the second insulating layer (5b) and the dielectric loss tangent tanδ2 and the product of the dielectric constant ε3 of the third insulating layer (5c) and the dielectric loss tangent tanδ3 fulfilling the relationship ε2×tanδ2<ε3×tanδ3.

Classes IPC  ?

• H01B 12/02 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• C01G 29/00 - Composés du bismuth

Abrégé

Disclosed are an oxide superconductor cabling and a method of manufacturing the oxide superconductor cabling capable of improving the length and characteristics of superconductor cabling and obtaining stabilized characteristics across the entire length thereof. A Y-class superconductor cabling (10), as an oxide superconductor cabling, comprises a tape-shaped cabling (13) further comprising a tape-shaped non-oriented metallic substrate (11), and a first intramellar layer (sheet layer) (12) that is formed by IBAD upon the tape-shaped non-oriented metallic substrate (11); and a second intramellar layer (gap layer) (14), further comprising a lateral face portion (14a) that is extended to the lateral faces of the first intramellar layer (sheet layer) (12) upon the tape-shaped cabling (13) by RTR RF-magnetron sputtering.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines

Abrégé

Provided is a cryogenic cable termination connector having a small heat inflow from the outside and stable electrical insulation properties. The cryogenic cable termination connector has a lead-out conductor (3) led out from a site at a very low temperature to a site at room temperature via a liquid refrigerant layer (5), a refrigerant gas layer (4), and an oil layer (2). The lead-out conductor (3) is provided with a capacitor-cone insulator (34) in which a plurality of metal foils (35) for dividing an electric field from a high voltage level down to the ground voltage level are stacked through an insulator. Among electric field tilting portions in which voltage changes gradually from the high voltage level to the ground voltage level, an electric field tilting portion positioned at a lower part is located in the liquid refrigerant layer (5) and an electric field tilting portion positioned at an upper part is located in the oil layer (2).

Classes IPC  ?

• H02G 15/34 - Accessoires de câble pour câbles cryogéniques
• H01L 39/04 - Conteneurs; Supports

Abrégé

Disclosed is a substrate for an oxide superconductor, the substrate comprising a metallic base, an interlayer of MgO formed on the metallic base by ion-beam-assisted deposition (IBAD), and a cap layer which has been formed directly on the interlayer and has a higher degree of crystal orientation than the interlayer, wherein the interlayer of MgO was moisturized prior to the formation of the cap layer.

Classes IPC  ?

• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• C01F 5/02 - Magnésie
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux

Abrégé

Disclosed is a low AC-loss multi-filament type superconductive wire material comprising a lengthy base material, an intermediate layer formed upon this base material, a superconductive layer formed upon this intermediate layer, and a metal stabilizing layer formed upon this superconductive layer. A plurality of slots, running along the longitudinal direction of the aforementioned base material, extending to the aforementioned intermediate layer from the aforementioned metal stabilizing layer via the aforementioned superconductive layer, and exposing the aforementioned intermediate layer, are formed in parallel in the width direction of the aforementioned base material, and the difference (δd = d1 - d2) between the width (d1) of the aforementioned slots at the lower part of the aforementioned superconductive layer, and the width (d2) of the slots at the lower part of the aforementioned metal stabilizing layer is not more than 10 μm.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines
• H01F 36/00 - Transformateurs munis d'enroulements supraconducteurs ou d'enroulements travaillant à des températures cryogéniques

Abrégé

A superconductor has one or more layers of a superconducting wire material including a superconducting layer formed on a substrate and wound around a former. In the superconductor, the first layer superconducting wire material wound immediately above the former is arranged so that the substrate side becomes outside and the superconducting layer side becomes inside. In a current terminal structure of the superconductor, a surface of the superconducting layer at an end of the first layer superconducting wire material, the surface being directed toward the inside, and part of a surface of the superconducting layer of a connection superconducting wire material, the surface being directed toward the outside, are faced and connected to each other.

Classes IPC  ?

• H01R 4/68 - Connexions à ou entre conducteurs supraconducteurs
• H01B 12/02 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes

Abrégé

A thin-film superconducting wire rod wherein a copper plating tin film is formed on the surface of a multilayer structure has a degraded flexural characteristic compared with the flexural characteristic of a thin-film superconducting wire rod having no copper plating thin film formed thereon. In order to suppress the degrading of the flexural characteristic, the thin-film super conducting wire rod (10) is provided with a multilayer structure (20) which includes a substrate (1), an intermediate layer (3) formed on one of the main surfaces of the substrate (1), and a superconducting layer (5) formed on the intermediate layer (3) main surface on the reverse side of the main surface facing the substrate (1). The thin-film superconducting wire rod (10) is further provided with a copper plating thin film (9) covering the outer circumference of the multilayer structure (20), and the residual stress inside of the copper plating thin film (9) operates as compression stress. The multilayer structure (20) may be provided with a silver-sputtered layer (6), and furthermore, may be provided with a silver coating layer (7) covering the outer circumference of the multilayer structure (20) between the copper plating thin film (9) and the multilayer structure (20).

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C23C 14/34 - Pulvérisation cathodique
• H01B 12/04 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à fil unique

Abrégé

Provided is a substrate for super-conductive film formation.  The substrate comprises a metal substrate and, formed directly on top of the metal substrate, an oxide layer of primarily chromium oxide having a layer thickness of 10 to 300 nm and a surface smoothness Ra of 50 nm or less.  Also provided is a method for producing a substrate for super-conductive film formation, comprising a step for forming an oxide layer, which has a layer thickness of 10 to 300 nm and a surface smoothness Ra of 50 nm or less, directly on top of a metal substrate.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• C22C 19/03 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles

Abrégé

Disclosed is a method for producing a superconducting oxide thin film for use in the production of a superconducting wire material. In the method, the superconducting oxide thin film is produced by a metal-organic decomposition method using a fluorine-free metal organic compound as a raw material. Prior to the main firing/heat treatment (S20) for crystallization/heat treatment, an intermediate heat treatment (S10) for decomposing any carbonate contained in a thin film to be subjected to the main firing/heat treatment (S20) is carried out. The intermediate heat treatment (S10) may be carried out in an atmosphere having a carbon dioxide concentration of 10 ppm or less. The metal organic compound may be a metal organic compound containing a β-diketone complex.

Classes IPC  ?

• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux

Abrégé

A Re-based oxide superconducting rod material having excellent magnetic field application angle dependence of Jc is obtained by finely dispersing magnetic flux pinning points in a superconductor. A mixed solution composed of an organometal complex solution containing a metallic element constituting a Re-based superconductor having a lowered Ba content and an organometal complex solution containing one or more metals selected from Zr, Ce, Sn, or Ti having a larger affinity for Ba is coated onto an intermediate layer in a composite substrate, and the assembly is then fired to artificially finely disperse Zr-containing oxide particles (magnetic flux pinning points). Thus, the magnetic field application angle dependence (Jc,min/Jc,max) of Jc can be significantly improved.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/02 - Oxydes; Hydroxydes
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines

Abrégé

This invention provides a process for producing an RE123-based oxide superconductor, characterized by comprising (i) applying a pulsed laser beam to an oxide-based target material containing RE, Ba, and Cu satisfying the following formulae (1) and (2) to form a plume and (ii) forming an RE123-based oxide superconducting film while holding the base material in the plume: 0.8 ≤ 2RE/Ba ឬ 1.0 (1); and 0.8 ≤ 3Ba/2Cu ឬ 1.0 (2) wherein RE represents one or at least two of Y, La, Nd, Sm, Eu, Gd, Dy, Ho, and Er.

Classes IPC  ?

• C23C 14/28 - Evaporation sous vide par énergie éléctromagnétique ou par rayonnement corpusculaire
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• C23C 14/08 - Oxydes
• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles

Abrégé

This invention provides a tape-shaped oxide superconductor which can prevent the diffusion of elements constituting a metallic substrate into a superconducting layer and cracking of an intermediate layer and can improve the alignment of the superconducting layer. A 15 to 100 nm-thick Ce-Gd-O-based oxide layer (2)(Ce : Gd = 40 : 60 to 70 : 30 molar ratio) as a first intermediate layer and a 100 nm-thick Ce-Zr-O-based oxide layer (3) (Ce : Zr = 50 : 50 molar ratio) as a second intermediate layer are formed by an MOD method on an Ni-base alloy substrate (1) having a half value width (FWHM: ﶴ䲘) of 6.5 degrees. A 150 nm-thick CeO2 oxide layer (4) as a third intermediate layer is further formed on the second intermediate layer by an RF sputtering method. A 1 쎽m-thick YBCO superconducting layer (5) is formed by a TFA-MOD method on the intermediate layer having a three-layer structure. In the tape-shaped oxide superconductor, the ﶴ䲘 values of the first to third intermediate layers are (6.0 to 6.5) degrees, (6.0 to 6.6) degrees, and (6.0 to 6.6) degrees, respectively, and the Jc value of the YBCO superconducting layer (5) in liquid nitrogen is 1.8 to 2.2 MA/cm2.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines

Abrégé

A polycrystalline thin film in which warpage of a substrate due to internal stress of the film is prevented by employing a thin film intermediate layer while maintaining good crystal orientation. The polycrystalline thin film has an intermediate layer formed by laminating a first layer and a second layer sequentially on a metal base wherein the crystal structure of the first and second layers is rock salt structure and fluorite structure, respectively.

Classes IPC  ?

• C30B 29/22 - Oxydes complexes
• C23C 14/08 - Oxydes
• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• H01L 39/24 - Procédés ou appareils spécialement adaptés à la fabrication ou au traitement des dispositifs couverts par  ou de leurs parties constitutives

Abrégé

This invention provides a rare earth-type tape-shaped oxide superconductor having excellent mechanical strength and superconducting properties and a composite substrate using the oxide superconductor. Nonoriented and nonmagnetic Ni-9 at% W alloy tapes (11, 21) were bonded onto both sides of a nonoriented and nonmagnetic hastelloy tape (100) by a normal temperature bonding process, and an Ni-3 at% W alloy tape (12) having a cubic texture was bonded onto the surface of the tape (11) by a normal temperature bonding process. Thereafter, the assembly is then heat treated in a reducing atmosphere to form a bonding layer (50a) and the like on the adhesive interface of each layer. Next, a (Ce,Gd)O2 intermediate layer (13) and a Ce2Zr2O7 intermediate layer (14) by an MOD process, a CeO2 intermediate layer (15), a YBCO superconducting film (16) by a TFA-MOD method, and a silver stabilization layer (17) were stacked in that order on the surface of the tape (12). This superconductor had a critical current value (Ic) of 150 A.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C22C 19/03 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel
• C22C 19/05 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel avec du chrome
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles

Abrégé

This invention provides a tape-shaped superconductor which can realize high Jc and Ic values by virtue of the elimination of the cause of generation of cracks and deterioration of an electrical connectivity in crystal grain boundaries. In producing an Re-base (123) superconductor on a substrate by an MOD method, the use of a raw material solution having a Re : Ba : Cu molar ratio of 1 : X : 3, wherein X is a Ba molar ratio satisfying X < 2 (preferably 1.0 ≤ X ≤ 1.8, especially 1.3 ≤ X ≤ 1.7), can realize the production of a thick-film tape-shaped superconductor having a superconductivity of Jc = 3.20 MA/cm2 and Ic = 525 A/cm (X = 1.5).

Classes IPC  ?

• C01G 3/00 - Composés du cuivre
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• H01L 39/24 - Procédés ou appareils spécialement adaptés à la fabrication ou au traitement des dispositifs couverts par  ou de leurs parties constitutives

Abrégé

A thin film superconducting wire rod (16) and a conductive tape (15) are immersed in a solder bath (35) containing a solder, which includes Sn (tin) and Bi (bismuth), to bond the thin film superconducting wire rod (16) and the conductive tape (15), and a composite superconducting wire rod (10) is formed.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines

Abrégé

Disclosed is a superconducting wire wherein at least a superconducting thin film and a stabilizing film are sequentially formed on a substrate having a certain width and a certain length. The superconducting wire has at least one incision formed along the longitudinal direction, and it can be bent in the width direction along the incision.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• H01B 12/12 - Conducteurs creux
• H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines

Abrégé

A process for producing a superconducting thin-film material, including the vapor phase step of forming superconducting layer (3) in accordance with a vapor phase method and the liquid phase step of forming superconducting layer (4) abutting on the superconducting layer (3) in accordance with a liquid phase method. Preferably, the process further includes the step of forming interlayer (2) between the superconducting layer (3) and metal substratum (1). It is preferred that the metal substratum (1) consist of a metal, and that the interlayer (2) consist of an oxide with any of rock, perovskite and pyrochlore crystal structures, and that both the superconducting layer (3) and the superconducting layer (4) have an RE123 composition. Accordingly, the value of critical current can be enhanced.

Classes IPC  ?

• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• C30B 29/22 - Oxydes complexes
• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines
• H01L 39/24 - Procédés ou appareils spécialement adaptés à la fabrication ou au traitement des dispositifs couverts par  ou de leurs parties constitutives

Abrégé

A process for producing a superconducting thin-film material, including the steps of forming interlayer (2); forming superconducting layer (3) abutting on the interlayer (2); and forming superconducting layer (4) abutting on the superconducting layer (3) in accordance with a vapor phase method. The interlayer (2) is retained in a reduced-steam atmosphere or reduced-carbon-dioxide atmosphere during the period between the interlayer (2) forming step and the superconducting layer (3) forming step. The superconducting layer (3) is retained in a reduced-steam atmosphere or reduced-carbon-dioxide atmosphere during the period between the superconducting layer (3) forming step and the superconducting layer (4) forming step. Accordingly, the value of critical current can be enhanced.

Classes IPC  ?

• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines

Abrégé

On a first intermediate layer provided on a substrate and having an excellent surface smoothness, are formed a second intermediate layer and an YBCO superconductor layer having excellent properties. An YBCO superconductor (10) having a critical current density (Jc) of 1 MA/cm2 or higher can be produced by forming a first intermediate layer (2), a second intermediate layer (3), an YBCO superconductor layer (4) and an Ag-stabilized layer (5) on the surface of a tape-shaped biaxially oriented Ni-W alloy substrate (1), wherein the first intermediate layer (2) has a thickness of 5 nm or less, has a surface smoothness, comprises A2Zr2O7, and is formed by repeating coating and provisional burning several times by the MOD method, the second intermediate layer (3) comprises a CeO2 film and is formed by the pulse plating method, the YBCO superconductor layer (4) is formed by the MOD method, and the Ag-stabilized layer (5) is formed on the YBCO superconductor layer (4).

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles

Abrégé

This invention provides a heat treatment apparatus for an oxide superconducting wire that is easy to control atmosphere during firing and can realize a high manufacturing speed. A heat treatment apparatus (1) comprises a heat treating furnace (4) and a cylindrical rotator (5), rotatable about a horizontal rotating shaft, provided within the heat treating furnace (4). The rotator (5) in its cylindrical body (5a) have a number of throughholes (5b) formed evenly over the whole surface of the cylindrical body (5a). One end of the cylindrical body (5a) is hermetically sealed by a lid. On the other end, a gas discharge pipe (7) for discharging gas within the cylindrical body to the outside of the heat treating furnace (4) is connected to the lid. A plurality of gas supply pipes (8) are symmetrically provided separately from each other on the outer surface of the cylindrical body (5a). A number of gas jet holes are formed in each of the gas supply pipes (8) so as to jet atmosphere gas toward the surface of the cylindrical body. A tape-shaped wire (6) formed of a precursor film of a YBCO superconducting layer is wound around the rotator (5) for heat treatment for superconductor formation.

Classes IPC  ?

• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• F27B 9/04 - Fours dans lesquels la charge est déplacée mécaniquement, p.ex. du type tunnel; Fours similaires dans lesquels la charge se déplace par gravité adaptés pour le traitement de la charge sous vide ou sous atmosphère contrôlée
• F27B 9/30 - Fours dans lesquels la charge est déplacée mécaniquement, p.ex. du type tunnel; Fours similaires dans lesquels la charge se déplace par gravité - Parties constitutives, accessoires ou équipement particuliers aux fours de ces types

Abrégé

This invention provides a production process of a thick-film tape-shaped RE-type (123) superconductor having a high critical current value. The production process comprises providing a composite substrate comprising Gd2Zr2O7 and CeO2 stacked in that order on a Hastelloy substrate, coating a raw material solution prepared by dissolving a trifluoroacetate of Y and Ba and a naphthenate of Cu onto the composite substrate, heat treating the coated composite substrate by calcination, then subjecting the calcined assembly to intermediate heat treatment at a temperature below the temperature of heat treatment for superconductor production, and then heat treating the assembly in an argon gas atmosphere under conditions of highest heating temperature 760ºC, water vapor partial pressure 13.5%, and oxygen partial pressure 0.09% for superconductor production to produce a tape-shaped RE-type (123) superconductor comprising a YBCO superconducting film having a thickness of more than about 2 騜m.

Classes IPC  ?

• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines
• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux

Abrégé

Disclosed is a long RE123 oxide superconductor stably having excellent superconducting characteristics at liquid nitrogen temperature, which can be used as a strand for a single-core or multicore wire material. Also disclosed is a method for mass-producing such a superconductor. Specifically disclosed is an RE123 oxide superconductor characterized by being composed of a conductive layer containing an REBa2Cu3O7-&dgr; oxide superconductor, which is made by using a mixed raw material including at least RE2BaO4 and a Bax-Cuy-Oz raw material, and a holding member for holding the conductive layer. In this connection, RE represents one or more elements selected from La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu and Y.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• C01G 1/00 - Méthodes de préparation des composés des métaux non couverts en , , , , en général
• C01G 3/00 - Composés du cuivre
• C04B 35/00 - Produits céramiques mis en forme, caractérisés par leur composition; Compositions céramiques; Traitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles

Abrégé

A superconducting thin film material (1) includes a first superconducting thin film (1a) to which surface smoothing process is performed, and a second superconducting thin film (1b) formed on a surface of the first superconducting thin film (1a) to which the smoothing process is performed. A superconducting wire rod (10) includes a substrate (2), an intermediate layer (3) formed on the substrate (2), and a superconducting layer (4) formed on the intermediate layer (3), and the superconducting layer (4) is composed of the superconducting thin film material (1). A method for manufacturing the superconducting thin film material (1) and a method for manufacturing the superconducting wire rod (10) are also provided.

Classes IPC  ?

• H01B 12/06 - Conducteurs, câbles ou lignes de transmission supraconducteurs ou hyperconducteurs caractérisés par leurs formes à couches ou fils déposés sur des supports ou des noyaux
• H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
• H01F 6/06 - Bobines, p.ex. dispositions pour l'enroulement, l'isolation, les enveloppes ou les bornes des bobines