Abstract

The present application relates to the technical field of integrated circuit manufacturing and advanced packaging, and discloses a copper interconnect structure system and a preparation method therefor, and an electronic component. The copper interconnect structure system comprises a dielectric layer disposed on the surface of a substrate and a copper-based alloy thin film disposed on the surface of the dielectric layer, and a diffusion barrier layer interconnect structure is formed between the copper-based alloy thin film and the dielectric layer; doping elements are doped in the copper-based alloy thin film; the doping elements comprise a metal which is easy to form an oxide self-passivation layer and a refractory metal, and no intermetallic compound is formed between the doping elements and copper; the doping amount of the doping elements in the copper-based alloy thin film is 0.1-3 at.%. The copper interconnect structure system has relatively high thermal stability and reliability, can maintain relatively low thin film resistivity, is not only conducive to reducing circuit power consumption, but also conducive to prolonging the service life of a circuit, and has important guiding significance for improving the performance of an integrated circuit.

IPC Classes  ?

• H01L 23/538 - Arrangements for conducting electric current within the device in operation from one component to another the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
• H01L 21/768 - Applying interconnections to be used for carrying current between separate components within a device

Abstract

A machine-learning-oriented method for extending tensile strength features of an aluminum alloy. The method comprises the following steps: collecting tensile strength data, and selecting a plurality of pieces of tensile strength data as features values of machine learning for predicting tensile strength; performing one-hot encoding processing on the selected plurality of pieces of tensile strength data, and then performing pre-processing; establishing a machine learning model, training the established machine learning model by using a data set, and predicting tensile strength by using the trained machine learning model; finding out a feature variable that has the greatest impact on the establishment of the machine learning model; and performing feature extension, so as to obtain an extended feature having greater importance.

IPC Classes  ?

• G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
• G06F 17/18 - Complex mathematical operations for evaluating statistical data
• G06N 20/00 - Machine learning

Abstract

The present application is suitable for the technical field of crystal material characterization, and provides a crystal interface coding method and system, a terminal device and a storage medium. The method comprises: acquiring first phase basic information of a first interface corresponding to a first target object and second phase basic information of a second interface corresponding to a second target object; according to first atomic coordinate information and second atomic coordinate information, determining lattice information of a third interface corresponding to a third target object; and inputting the first phase basic information, the second phase basic information and the lattice information into a preset interface matrix calculation formula, so as to determine interface information of the third interface. The present application can provide the interface information serving as a unique identifier of the interface, and accurately define the interface of a crystal on the basis of the interface information, helping to subsequently analyze and store interface data, reducing the effect of redundant information on the interface data, and achieving high practicability.

IPC Classes  ?

• G16C 60/00 - Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation

Abstract

Disclosed are a high-entropy alloy (HEA) coating and a preparation method and use thereof. Laser cladding is conducted with an HEA powder to obtain the HEA coating, where the HEA is a FeCoCrNiAl0.5Ti0.5 alloy, and the HEA includes the following chemical components in atomic percentage: Al: 10.01% to 12.30%, Co: 18.1% to 22.5%, Cr: 18.05% to 20.12%, Fe: 18.77% to 21.02%, Ni: 19.21% to 20.99%, and Ti: 8.43% to 11.5%. The HEA material with high hardness and wear resistance provided by the present disclosure is suitable for laser cladding of a surface of a precision mold, an offshore component, or a drilling rod. A powder is prepared from the above alloy components and then prepared into a corresponding HEA coating with high strength, high hardness, and prominent wear resistance through laser cladding. The material has prominent weldability and is a special nickel-based HEA material suitable for laser additive manufacturing.

IPC Classes  ?

• C22C 30/00 - Alloys containing less than 50% by weight of each constituent
• B22F 9/10 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying using centrifugal force
• B23K 26/34 - Laser welding for purposes other than joining
• B23K 35/30 - Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
• B23K 103/04 - Steel alloys

Abstract

A high-strength corrosion-resistant anti-cracking steel, and a preparation method therefor and the use thereof, which relate to the technical field of metal materials. The crystal grains of the steel comprise austenite and ferrite, and the crystal grains have a slender fiber shape. The high-strength corrosion-resistant anti-cracking steel comprises the following elements in percentages by weight: C: 0.01-0.1%, Cr: 18-32%, Ni: 3-10%, Mo: 0.2-5.0%, Mn: 0.1-2.0%, Si: 0.2-1.0%, N: 0.1-0.3%, S≤0.03%, P≤0.03%, and the balance of Fe and inevitable impurities. The corrosion resistance of a material is improved by controlling the element composition of the steel, especially the ratio of C, N and Si. The slender fibrous structure grains in the material have good impact toughness, such that the mechanical properties of fatigue fracture performance, etc., of the material can be significantly improved, thereby prolonging the service life of the high-strength corrosion-resistant anti-cracking steel.

IPC Classes  ?

• C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
• C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
• C22C 38/00 - Ferrous alloys, e.g. steel alloys
• C21D 8/06 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
• F16B 35/00 - Screw-bolts; Stay bolts; Screw-threaded studs; Screws; Set screws

Abstract

A supporting and connecting body (100) for solid oxide fuel cells or electrolysis cells (10), and a preparation method therefor. The method comprises: first, obtaining an integrally formed supporting and connecting body (100) by means of an additive manufacturing technology, and then preparing pass-through holes (101) in the surface thereof by means of laser drilling, electron beam drilling or chemical etching technologies, such that the supporting and connecting body (100) has multiple functions of supporting, mass transferring, and serially connecting solid oxide fuel cells or electrolysis cells (10). A through hole plate on the surface of the integrally formed supporting and connecting body (100) is not prone to deform, and the pass-through holes (101) thereof can be finely controlled, thereby improving the air permeability of the supporting and connecting body (100), enhancing the strength of bonding between the supporting and connecting body (100) and a functional layer (200) and increasing the amount of power generation per unit area, and further obtaining high-performance solid oxide fuel cell or electrolysis cell stacks (20).

IPC Classes  ?

• H01M 8/023 - Porous and characterised by the material
• H01M 8/0232 - Metals or alloys
• B33Y 10/00 - Processes of additive manufacturing

Abstract

Disclosed in the present invention is a measurement method for the porosity of an irregular columnar structure of a thermal barrier coating. In the method, by using the different volatilization characteristics of sodium chloride on the surface of a coating and inside pores, the porosity inside an irregular columnar structure is quantitatively characterized by means of a thermogravimetric experiment. The method mainly comprises the steps of sodium chloride melt infiltration, thermogravimetric analysis, porosity calculation, etc. The measurement method is simple and easily implemented, is not sensitive to a sample treatment process, and has a relatively universal applicability, and a relatively good repeatability and accuracy. The present invention is applicable to the nondestructive quantitative characterization of the porosity of a thermal barrier coating having an irregular columnar structure of a complex pore structure, and is of great significance for evaluating and predicting the thermal insulation and corrosion resistance performance of the thermal barrier coating having the irregular columnar structure.

IPC Classes  ?

• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials

Abstract

The present invention belongs to the technical field of surface treatments, and disclosed are a high-temperature super-lubrication silicon-doped diamond-like carbon film, and a preparation method therefor and the use thereof. The high-temperature super-lubrication silicon-doped diamond-like carbon film comprises a Cr priming layer, a CrxSiyCz gradient transition layer and an Si-DLC functional layer which are sequentially arranged on the surface of a substrate. Further disclosed is a method for improving the friction and wear performance of a matrix. The high-temperature super-lubrication silicon-doped diamond-like carbon film is prepared on the surface of the matrix, such that during friction in a high-temperature atmospheric environment, a compact transfer film composed of amorphous carbon and SiOx is formed in situ at a friction pair.

IPC Classes  ?

• C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material

Abstract

The present invention relates to the technical field of cells, and provides an anti-carbon-deposition self-sealing electricity-gas symbiotic solid oxide fuel cell structure. The cell structure comprises a connector reforming plate, an anode, an electrolyte, and a cathode, wherein the connector reforming plate comprises a connector body; an upper surface and a lower surface of the connector body are respectively provided with a cell supporting porous area and an oxidizing gas flow channel; a lower surface of the cell supporting porous area is provided with a reformed synthesis gas flow channel; a reforming porous area is provided between the reformed synthesis gas flow channel and the oxidizing gas flow channel, and the reforming porous area is separated from the upper and lower flow channels by leakage-free wall faces; and the anode, the electrolyte and the cathode are sequentially stacked on an upper surface of the cell supporting porous area. The cell structure realizes self-sealing of reformed fuel and reformed synthesis gas, thereby reducing the sealing difficulty for a flat-plate SOFC; and indirect reforming of fuel in the reforming porous area can prevent the problems of cell structure damage and anode carbon deposition caused by excessively high local thermal stress during internal reforming, thereby greatly improving the performance of a cell and prolonging the service life thereof.

IPC Classes  ?

• H01M 8/0276 - Sealing means characterised by their form
• H01M 8/0258 - Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
• H01M 8/0297 - Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other

Abstract

ss of more than 0.5; and the powder material is composed of five rare earth elements of Y, La, Nd, Sm and Eu in an equal molar ratio, and presents uniform element distribution on both the micron and nano scales. The preparation method therefor comprises two steps of solid-phase sintering and spray granulation. The powder material is applicable to plasma spraying physical vapor deposition, has a good sintering resistance under the ultrahigh-temperature conditions of 1500ºC, has a simple preparation process, and is beneficial for batch preparation and engineering applications.

IPC Classes  ?

• C04B 35/48 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
• C04B 35/488 - Composites
• C04B 35/482 - Refractories from grain sized mixtures
• C23C 4/134 - Plasma spraying

Abstract

The present invention relates to the technical field of laser cladding, and a method and device for cladding a high-reflection material using a short wavelength ultra-high speed laser are disclosed. In the above method, a short-wavelength laser is employed to carry out ultra-high-speed laser cladding on the surface of the high-reflection material, a spot of a laser emitted by the short-wavelength laser is a rectangular spot, a nozzle used in a cladding process is a rectangular powder feeding nozzle having a rectangular powder outlet, and long sides of the rectangular spot are parallel to long sides of the rectangular powder outlet. The above device comprises a short-wavelength laser, a rectangular laser cladding processing head, a powder feeding device, and a rectangular powder feeding nozzle. The device and the method employ the short-wavelength laser to carry out a cladding treatment, such that the laser absorption rates of a high-reflection material such as copper, aluminum, etc. can be significantly increased, a stable melting pool is formed, the loss of laser power and cladding defects are reduced, the quality of a formed coating is ensured, damage to an apparatus caused by laser reflection is reduced, and the device and the method have good application prospects in the fields of aerospace, marine apparatuses, iron and steel metallurgy, etc.

IPC Classes  ?

• C23C 24/10 - Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma

Abstract

32233; the particle size of the ceramic particles is 45-85 μm; and the amounts of the ceramic particles contained in the preparation raw materials of the three coatings are 5-15%, 20-30% and 50-60% in sequence. The thickness ratio of the three coatings is 1 : 0.8-0.9 : 0.6-0.7. The composite coating has good impact resistance, abrasion resistance and corrosion resistance at the same time.

IPC Classes  ?

• C23C 24/10 - Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
• C22C 30/00 - Alloys containing less than 50% by weight of each constituent
• C22C 29/06 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
• C22C 29/12 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on oxides

Abstract

0.20.20.20.20.22277, wherein the percentage of the mole number of each rare earth element to the total mole number of all the rare earth elements is 18-22%. Elements in the high-entropy ceramic thermal barrier coating are evenly distributed on the coating, and element segregation does not occur. In addition, the high-entropy ceramic thermal barrier coating has a fluorite phase structure, and the cross-section morphology thereof is a feather-type columnar high-strain tolerance structure, wherein the bottom coating is formed by structure ordering of columnar principal crystals and dendritic crystals, and the porosity thereof is large; and the top is formed by loose structure ordering of columnar crystals, and numerous secondary dendritic crystals, which do not grow, constitute a "cauliflower head" area. The coating material has both good high-temperature phase stability and good mechanical properties, and also has a significant meaning in the development and application of an advanced structure ultrahigh-temperature thermal barrier coating technology.

IPC Classes  ?

• C23C 4/134 - Plasma spraying
• C23C 4/11 - Oxides

Abstract

A system for laser additive manufacturing, and an additive manufacturing method, which relate to the technical field of additive manufacturing. The system for laser additive manufacturing comprises an infrared-laser generator (001), an infrared-light collimating lens (0031), a blue-laser light generator (005), a blue-light collimating lens (0032), a dichroic mirror (004) and a focusing lens (006), and the other portions of the system are all common matching systems for a laser additive manufacturing system. The idea of performing composite machining by means of multi-wavelength light beams is used, that is, beam combination processing is performed at a focus by using a plurality of beams of low-power pulse-type blue laser, such that an actual machining area and the energy density of laser outputs are increased; and the energy loss rate of the blue laser in an optical fiber is reduced, the laser absorptivity of a highly reflective material is increased, and a molten bath is expanded and maintained by using infrared laser having large light spots, thereby achieving goals such as improving the additive efficiency and reducing the energy consumption.

IPC Classes  ?

• B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
• B23K 26/34 - Laser welding for purposes other than joining
• B22F 12/45 - Two or more
• B22F 10/25 - Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
• B22F 10/28 - Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
• B33Y 10/00 - Processes of additive manufacturing

Abstract

A diamond coating micro drill bit, and a preparation method therefor and the use thereof, which belong to the technical field of micro drill bits. The method comprises: before a diamond coating is deposited, subjecting a micro drill bit to chemical pretreatment, wherein the diameter of the micro drill bit is 0.35-0.75 mm, the grain size is 0.3-1.0 μm, and the cobalt content is 4-8 wt%; the chemical pretreatment comprises a first acid etching, an alkali etching and a second acid etching; an acid etching liquid comprises nitric acid, hydrochloric acid and water in a volume ratio of 1 : 2-4 : 10-15; an alkali etching liquid comprises potassium ferricyanide, potassium nitrate and water in a volume ratio of 1 : 1 : 10; and the time taken for the three instances of etching is respectively 10-30 s, 2-6 min and 10-50 s. The method can significantly reduce the influence of the chemical pretreatment on the breaking strength of the micro drill bit and the preparation effect of the diamond coating, the Co removal effect is good, the etching efficiency is high, and the micro drill bit obtained can be used for machining circuit boards.

IPC Classes  ?

• C23C 16/02 - Pretreatment of the material to be coated
• C23C 16/27 - Diamond only
• C23C 16/44 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition (CVD) processes characterised by the method of coating
• B23B 51/00 - Tools for drilling machines

Abstract

The present disclosure belongs to the technical field of metal-based composite materials, and particularly relates to a titanium particle reinforced magnesium-based composite material and a preparation method therefor. The preparation method comprises: in the presence of protective gas, (1) heating a magnesium alloy until the magnesium alloy is completely melted; (2) directly introducing titanium particles without preheating under a stirring condition, and then carrying out stirring and mixing; and (3) carrying out heating and cast molding. Step (2) and step (3) are carried out under the micro-positive pressure conditions that the pressure in a furnace is higher than the atmospheric pressure outside the furnace and the pressure difference is 0-300 Pa, and in the heating process of step (2) and step (3), the viscosity of a magnesium alloy melt is 1-10 Pa·s by adjusting the temperature and stirring conditions of the magnesium alloy melt, respectively. According to the method of the present disclosure, the viscosity of the magnesium alloy melt is used as a key index, and the melt viscosity is controlled according to the stirring condition and the melt temperature, such that titanium particle sedimentation and agglomeration are effectively avoided, and the uniformly distributed composite material is obtained.

IPC Classes  ?

• C22C 23/00 - Alloys based on magnesium
• C22C 1/02 - Making non-ferrous alloys by melting
• G05D 24/02 - Control of viscosity characterised by the use of electric means

Abstract

Disclosed in the present invention are a high-entropy alloy, and a preparation method therefor and the use thereof. The present invention relates to the technical field of high-performance metal powder materials. A high-entropy alloy coating is prepared by means of the laser cladding of a high-entropy alloy powder. The high-entropy alloy is an FeCoCrNiAl0.5Ti0.5 alloy, and the chemical composition of the high-entropy alloy and the atomic percentages thereof are: 10.01-12.30% of Al, 18.1-22.5% of Co, 18.05-20.12% of Cr, 18.77-21.02% of Fe, 19.21-20.99% of Ni, and 8.43-11.5% of Ti. The high-hardness, wear-resistant and high-entropy alloy material provided in the present invention is a high-hardness, wear-resistant and high-entropy alloy material suitable for surface laser cladding for a precision mold, a maritime work part, a drilling oil well rod, etc.

IPC Classes  ?

• C22C 30/00 - Alloys containing less than 50% by weight of each constituent
• B22F 9/10 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying using centrifugal force
• C23C 24/10 - Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
• B22F 10/20 - Direct sintering or melting
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 70/00 - Materials specially adapted for additive manufacturing

Abstract

Disclosed is a biomedical β titanium alloy and a preparation method thereof. Its composition includes: Mo: 9.20-13.50%; Fe: 1.00-3.20%; Zr: 3.50-8.20%; Ta: 0-1.00%; the balance is Ti. The β titanium alloy is suitable for the laser additive manufacturing technology, and the prepared parts have a dense equiaxed grain structure with ultra-low grain size and a small number of columnar grain structures, which produces a fine-grain strengthening effect, and greatly improve the hardness and tribocorrosion performance of the alloy material. Also provided is a method for preparing a non-toxic, low-elasticity, and tribocorrosion resistant biomedical β titanium alloy material. A powder prepared from the above alloy components is subjected to a laser additive manufacturing technology to prepare a corresponding β titanium alloy with high-hardness, good tribocorrosion resistance and extremely low cytotoxicity. Moreover, the prepared material has good weldability and is a special metal alloy powder suitable for laser additive manufacturing.

IPC Classes  ?

• C22C 14/00 - Alloys based on titanium
• B22F 1/05 - Metallic powder characterised by the size or surface area of the particles
• B22F 1/065 - Spherical particles
• B22F 9/14 - Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor using physical processes using electric discharge
• C22C 1/04 - Making non-ferrous alloys by powder metallurgy

Abstract

Provided are a solid oxide fuel cell/electrolytic cell and electric stack, which relate to the field of cells. A metal support frame is molded in one step or more steps through the additive manufacturing technology. And then a fuel/electrolytic cell functional layer is formed on the metal support frame by means of thermal spraying, tape casting, screen printing or chemical vapor deposition method, and self-sealing of the solid oxide fuel cell/electrolytic cell is realized through a dense structure of electrolyte.

IPC Classes  ?

• H01M 8/1213 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the electrode/electrolyte combination or the supporting material
• B22F 10/366 - Scanning parameters, e.g. hatch distance or scanning strategy
• H01M 8/1286 - Fuel cells applied on a support, e.g. miniature fuel cells deposited on silica supports
• B22F 12/49 - Scanners
• B33Y 10/00 - Processes of additive manufacturing
• B33Y 80/00 - Products made by additive manufacturing
• B22F 12/41 - Radiation means characterised by the type, e.g. laser or electron beam
• H01M 8/12 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte

Abstract

The present invention relates to the technical field of electrochemical reactions. Disclosed is a manufacturing method for an electrochemical reaction apparatus, the method comprising: first, providing a unit model of a battery unit (110), and then manufacturing a plurality of support units using an additive manufacturing technique and according to the unit model; coating each support unit with a first electrode layer (117), an electrolyte layer (118) and a second electrode layer (119), so as to obtain the battery unit (110); then continuing to apply a first sealant layer around the second electrode layer (119); and afterwards, successively stacking a plurality of battery units (110) to form a stack body (100), and sintering the stack body (100) in one step. Flat-plate-type support units are manufactured by using an additive manufacturing technique, and the support units are formed integrally, such that the procedure is simple, the manufacturing efficiency of an electrochemical reaction apparatus is improved, and the manufacturing efficiency of the support units is 4 to 200 times that of the traditional process. In addition, a plurality of battery units (110) are stacked and are then sintered in one step, and the manufacturing of the electrochemical reaction apparatus can be completed by means of sintering in one step, such that the procedure is simple, and there is no need to repeatedly sinter the individual battery units.

IPC Classes  ?

• H01M 8/2404 - Processes or apparatus for grouping fuel cells
• H01M 8/2425 - High-temperature cells with solid electrolytes

Abstract

A solid oxide fuel cell/electrolyzer cell (400, 500) and a stack, relating to the field of cells. A metal support frame (300a, 300b) is formed by one-step or multi-step molding by means of an additive manufacturing technology. Then, a cell/electrolyzer cell functional layer (401) is formed on the metal support frame (300a, 300b) by means of thermal spraying, tape casting, screen printing, or a chemical vapor deposition method, and self-sealing of the solid oxide fuel cell/electrolyzer cell (400, 500) is achieved by using a dense structure of an electrolyte. According to the solid oxide fuel cell/electrolyzer cell (400, 500) prepared by means of the manufacturing technology and the stack, conventional processes such as drilling, welding, packaging, powder metallurgy, and high-temperature sintering can be avoided, and structural and functional integration of the solid oxide fuel cell/electrolyzer cell (400, 500) is achieved, and the preparation efficiency is improved. Moreover, the mass energy density, processing accuracy, and reliability of the metal support solid oxide fuel cell/electrolyzer cell (400, 500) can be obviously improved, the preparation costs are reduced, and commercialization of the solid oxide fuel cell/electrolyzer cell (400, 500) is facilitated.

IPC Classes  ?

• H01M 8/1286 - Fuel cells applied on a support, e.g. miniature fuel cells deposited on silica supports
• C25B 1/04 - Hydrogen or oxygen by electrolysis of water
• C25B 9/63 - Holders for electrodes; Positioning of the electrodes

Abstract

A diffusion-resistant high-entropy alloy coating material and a heat resistant coating material, comprising a substrate and a diffusion-resistant high-entropy alloy coating. The diffusion-resistant high-entropy alloy coating comprises the elements: Al, Co, Cr, Ni, and Mo. The heat resistant coating material is obtained by forming the aforementioned diffusion-resistant high-entropy alloy coating on the substrate, and then, using same as a base material, forming a heat resistant coating thereon. By utilizing a unique slow diffusion effect of the diffusion-resistant high-entropy alloy coating and good physical and chemical matching thereof with both the substrate and the heat resistant coating, it is possible to effectively inhibit mutual diffusion of alloy components and harmful phase precipitation at the contact surface between the substrate and the coating, and improve the high temperature oxidation resistance capability of the coating. The heat resistant coating material can be applied in the preparation of hot-end parts of aeronautical engines or gas turbines to improve the service life and working reliability of the parts.

IPC Classes  ?

• C23C 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material
• C22C 30/00 - Alloys containing less than 50% by weight of each constituent
• C23C 14/16 - Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
• C23C 14/32 - Vacuum evaporation by evaporation and subsequent ionisation of the vapours
• C23C 14/35 - Sputtering by application of a magnetic field, e.g. magnetron sputtering

Abstract

Disclosed are a GM type cryogenic refrigerator rotary valve and a preparation method therefor. The GM type cryogenic refrigerator rotary valve comprises an aluminum alloy rotating valve and an alumina ceramic membrane. A valve body of the aluminum alloy rotating valve is provided with a first surface for arranging a working boss and a second surface opposite to the first surface; and a high-pressure hole and a low-pressure groove are both provided in the working boss, and a vent hole is provided in the first surface; the high-pressure hole and the vent hole both penetrate the valve body, and an air chamber is formed on the second surface. The alumina ceramic membrane is plated on surface of the aluminum alloy rotating valve. The preparation method comprises: plating an alumina ceramic membrane on surface of an aluminum alloy rotating valve by means of a micro-arc oxidation process.

IPC Classes  ?

• F16K 27/00 - Construction of housings; Use of materials therefor
• C25D 11/02 - Anodisation
• C25D 11/06 - Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
• F16K 3/08 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular closure plates rotatable around their centres
• F25B 9/14 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
• F25B 41/20 - Disposition of valves, e.g. of on-off valves or flow control valves

Abstract

Disclosed is a modification method of in situ dissolution on the surface of a metal material, comprising the following steps: (1) fully mixing a substrate metal and a modified metal powder to obtain a raw material powder; (2) preparing a metal material from the raw material powder obtained in step (1) by means of a preparation means under non-equilibrium conditions; and (3) heat-treating the metal material prepared in step (2) to bring same to an equilibrium state, and then cooling to room temperature, such that the doped phase is dissolved out onto the surface of the metal material, so as to obtain a modified metal material.

IPC Classes  ?

• C23C 4/134 - Plasma spraying
• C23C 4/08 - Metallic material containing only metal elements
• C22C 19/03 - Alloys based on nickel or cobalt based on nickel
• C22C 38/00 - Ferrous alloys, e.g. steel alloys
• C22C 19/07 - Alloys based on nickel or cobalt based on cobalt
• C23C 14/30 - Vacuum evaporation by wave energy or particle radiation by electron bombardment
• C23C 14/14 - Metallic material, boron or silicon
• B01J 23/89 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with noble metals