NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY (Japan)
ISHIKAWA PREFECTURE (Japan)
TORAY INDUSTRIES, INC. (Japan)
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA (Japan)
SUZUKI MOTOR CORPORATION (Japan)
TEIJIN LIMITED (Japan)
Inventor
Mori, Takayuki
Hirosaki, Kenichi
Okumura, Wataru
Mori, Daisuke
Iwano, Yoshihiro
Amaoka, Kazuaki
Abstract
A protrusion on a first member made of synthetic resin wherein a laser beam is applied to a side surface of the protrusion in a state in which a top surface of the protrusion of the first member is abutted against a second member made of synthetic resin, so as to melt at least the entire top surface of the protrusion and melt a portion of the second member in contact with the protrusion by heat of the melted top surface of the protrusion, followed by solidification of the melted portions, whereby the first member and the second member are welded together.
JAPAN ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY (Japan)
ISHIKAWA PREFECTURE (Japan)
Inventor
Tsurumi, Shigeyuki
Yasuda, Kazumasa
Sotome, Takeshi
Koyano, Mikio
Toyoda, Takeshi
Matoba, Akinari
Minamikawa, Toshiharu
Abstract
A thermoelectric material includes a parent phase in which an MgSiSn alloy is a main component, a void formed in the parent phase, and a silicon layer that is formed on at least a wall surface of the void and that includes silicon as a main component. The thermoelectric material further includes MgO in an amount of 1.0 wt. % or more and 20.0 wt. % or less. The silicon layer includes amorphous Si, or amorphous Si and nanosized Si crystals, and the parent phase includes a region in which the composition ratio of the Si of the chemical composition of the MgSiSn alloy is higher than in the other regions and a region in which the composition ratio of the Sn of the chemical composition of the MgSiSn alloy is higher than in the other regions. With these configurations, the thermoelectric material realizes both lower thermal conductivity and lower electrical resistivity.
H01L 35/22 - Selection of the material for the legs of the junction using inorganic compositions comprising compounds containing boron, carbon, oxygen, or nitrogen
H01L 35/04 - Structural details of the junction; Connections of leads
5.
Laser machining apparatus and laser machining method
A laser machining device includes a plurality of optical fibers and a collimator lens arranged in parallel along a supply nozzle for supplying a molten material, and a laser beam projected from the optical fiber is applied onto an axis between a tip of the supply nozzle and a build-up welding spot.
B23K 26/14 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beamNozzles therefor
B23K 26/34 - Laser welding for purposes other than joining
B23K 26/146 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beamNozzles therefor the fluid stream containing a liquid
JAPAN ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY (Japan)
ISHIKAWA PREFECTURE (Japan)
Inventor
Tsurumi Shigeyuki
Yasuda Kazumasa
Sotome Tsuyoshi
Koyano Mikio
Toyoda Takeshi
Matoba Akinari
Minamikawa Toshiharu
Abstract
Provided is a thermoelectric material 1 having: a parent phase 10 containing a MgSiSn alloy as a main component; vacancies 12 formed in the parent phase 10; and a silicon layer which is formed on at least the wall surfaces of the vacancies 12 and contains silicon as a main component. The thermoelectric material 1 also contains 1.0-20.0 wt% of MgO. The silicon layer contains amorphous Si, or amorphous Si and a nano-sized Si crystal, and the parent phase 10 is composed of a region in which the composition ratio of Si in the chemical composition of the MgSiSn alloy is higher than the other regions, and a region in which the composition ratio of Sn is higher than the other regions. As a result, the thermoelectric material 1 has a lower electrical resistivity while having a lower thermal conductivity.
NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY (Japan)
ISHIKAWA PREFECTURE (Japan)
TORAY INDUSTRIES, INC. (Japan)
MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA (Japan)
SUZUKI MOTOR CORPORATION (Japan)
TEIJIN LIMITED (Japan)
Inventor
Mori Takayuki
Hirosaki Kenichi
Okumura Wataru
Mori Daisuke
Iwano Yoshihiro
Amaoka Kazuaki
Abstract
Projections 12 are provided in advance on a first member 10, which is made of a synthetic resin. In a state in which the top surfaces of the projections 12 of the first member 10 are abutted against a second member 20, which is made of a synthetic resin, a laser beam L is radiated onto side surfaces of the projections 12 to melt at least the entire top surfaces of the projections 12, and portions of the second member 20 in contact with the projections 12 are melted by the heat of the melted top surfaces of the projections 12. Then, the melted portions are cured to weld together the first member 10 and the second member 20.
A supply nozzle (4) is disposed so as to pass through a condenser lens (3), and a plurality of optical fibers (1) and a plurality of collimator lenses (2) are disposed parallel to each other on the periphery of the supply nozzle (4), whereby a molten material (9) supplied from the supply nozzle (4) is subjected to laser irradiation along an axis (O) from a nozzle tip opening (4a) to a welding location (parent material) (BM) while the optical fibers (1) and collimator lenses (2) remain disposed parallel to each other.
B23K 26/34 - Laser welding for purposes other than joining
B23K 26/064 - Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
B23K 26/14 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beamNozzles therefor
[Problem] To provide a shaping material and a functional agent for 3-D printing in order to manufacture a mold into which a high-melting point metal having a melting point exceeding 1400°C can be poured. [Solution] This shaping material is obtained by mixing artificial molding sand and cement having alumina, which is a powdery precursor of a binder for binding the artificial molding sand grains to each other, as a principal component. Shaping is then performed using the shaping material and a functional agent for transforming the powdery precursor into the binder.
B22C 1/18 - Compositions of refractory mould or core materialsGrain structures thereofChemical or physical features in the formation or manufacture of moulds characterised by the use of binding agentsMixtures of binding agents of inorganic agents
B22C 9/02 - Sand moulds or like moulds for shaped castings
Provided is a piezoelectric actuator mechanism that is suited for automatic operation in the adjustment of a mirror holder in an optical system, or in the positioning of a movable table of a direct-drive stage, that has a short overall length, and wherein a compact and high-precision position/angle adjustment and positioning will be possible. The piezoelectric actuator mechanism comprises: a screw-driven feeding mechanism that is comprised of a feeding screw (11) and a feeding-screw nut (14); a disc-shaped rotor (17) mounted on the rear-end face of the feeding-screw nut (14); an ultrasonic motor (18) having a piezoelectric vibrator (19) that comes in contact with the circumference face of the rotor (17); and a driven mounting section that is pressed against the front tip of the feeding screw (11) by spring force, and displaced and positioned by the feeding operation of the feeding screw. The driven mounting section can be made to be a mirror holder (1) to be used in an optical system, or a movable table (21) of a direct-drive stage (10), for example.
Electrodes (7,8,9), having curved sections in the shape of the outline thereof, are disposed in areas of a rectangular plate-shaped piezoelectric transducer element (1) in which the strain in the normal mode of vibration is large. The electrodes (7,8) which excite a bending vibration are disposed in areas in which the strain in the bending normal mode is at least a predetermined value, and the outline curved sections of the electrodes (7,8) are shaped so as to follow along strain contours (3,4), and the electrode (9) which excites an extending vibration is disposed in an area in which the strain in the extending normal mode is at least a predetermined value, thus providing a transducer for an ultrasonic motor which aims to reduce transducer loss (increasing vibration efficiency), and improve transducer durability and reliability.
Disclosed is a frictional contact member for a transducer in an ultrasonic motors, said frictional contact member being in a transducer (1) for an ultrasonic motor which drives a driven body (2) using frictional contact, and being characterised by having a configuration in which a pin-shaped member maintains the uniformity of the external shape of the cross-section along the axial direction thereof and the cross-sectional area thereof when a contact at the tip of the transducer undergoes frictional wear when driving the driven body using frictional contact. Thus provided is a transducer for an ultrasonic motor in which the shape of the friction contact section of the transducer tip sustains initial operations, maintaining stable speed, thrust, and stable resonant frequency, and with which stable operation characteristics can be obtained in the long-term.
An apparatus for holding a piezoelectric vibrator eliminates vibration energy loss and changes in vibration characteristics and stably supplies output at high efficiency. The apparatus for holding the piezoelectric vibrator is provided with a frame-shaped or box-shaped supporting member (11), which stores a piezoelectric vibrator (1) by having spaces in between; and a plate spring structure (12) arranged between the side portions of the supporting member (11) and the piezoelectric vibrator (1). The plate spring structure (12) is provided with a first plate spring member (13) which is adhered to the piezoelectric vibrator by being bent over the side portion of the piezoelectric vibrator to sandwich the facing side portions of the piezoelectric vibrator (1) from a base end portion adhered to one side portion of the supporting member (11); and a second plate spring member (18), which is adhered to the piezoelectric vibrator by being bent over the side portion of the piezoelectric vibrator (1) to sandwich the facing side portions of the piezoelectric vibrator (1) from a base end portion adhered to the other side portion of the supporting member (11). The first plate spring member (13) and the second plate spring member (18) are integrally formed by the adhering portion to the piezoelectric vibrator (1).
Provided is a method of removing heavy metals from a fish sauce whereby heavy metals in the fish sauce can be effectively removed without damaging taste components such as proteins contained in the fish sauce to thereby enable the effective utilization of the fish sauce as a seasoning or a starting material. Tannin, which is a food additive, or a food additive containing tannin is added to a fish sauce and solid matters are removed from the fish sauce by solid/liquid separation. It is appropriate to add tannin at a ratio by weight to the fish sauce of 0.001 to 0.5:1.
Intended is to provide an electronic controller for reusing a diesel engine separated from an existing vehicle. The diesel engine comprises acceleration signal reading means and fuel control means, and is controlled by making a conversion into the fuel control means independent of the vehicle system on the basis of an electric signal read by the acceleration signal reading means. The fuel control means is incorporated into the vehicle system. The electronic controller is characterized in that the acceleration signal and a drive signal are correlated to each other independently of the vehicle system by directly measuring the drive signal applied to the diesel engine in a manner to correspond to the acceleration signal reading means.
F02D 19/08 - Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
F02D 11/10 - Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
F02D 41/02 - Circuit arrangements for generating control signals
F02D 41/40 - Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
