Abstract: An elastic metal strip 10 aligning the longitudinal direction with the rolling direction of a cold-rolled plate is collected and processed to a shape comprising a correction plate 16 with the longitudinal direction of the elastic metal 10 as the width direction of nail and a plurality of tongue strips 11 protruded from the edge of the correction plate 16 near the nail tip. The tongue strip 11 is folded and bent to form a hooked claw 17 with a double structure of a folding part 18 and a bending part 19. A nail tip 21 of a deformed nail 20 is inserted between the hooked claw 17 and the correction plate 16 to apply a restoring force of elasticity in the correction plate to the deformed nail 20 as correction ability for deformed nails. A wrought wire rod can be used instead of a cold-rolled plate and a Cu—Al—Mn type shape-memory alloy may further be used as a raw material.

Abstract: A zinc based solder material 55 of the present invention is prepared by providing on the surface of a zinc based material 50, from which an oxide film 501 has been removed or at which an oxide film 501 does not exist, with a coating layer 51 containing primarily a metal whose oxide is more easily reducible than the oxide film 501. In a joined body and a power semiconductor module of the present invention, the zinc based solder material 55 is used in the joining portion, and after joining, the coating layer 51 does not exist.

Abstract: A ferromagnetic shape memory alloy comprising 25-50 atomic % of Mn, 5-18 atomic % in total of at least one metal selected from the group consisting of In, Sn and Sb, and 0.1-15 atomic % of Co and/or Fe, the balance being Ni and inevitable impurities, which has excellent shape memory characteristics in a practical temperature range, thereby recovering its shape by a magnetic change caused by a magnetic-field-induced reverse transformation in a practical temperature range.

Abstract: Provided is a power semiconductor module in which two components are bonded by a Bi based solder material. A Cu layer is provided on the surfaces thereof to be bonded by the Bi based solder material on the two-component. Two components, i.e., the components to be bonded, are a combination of a semiconductor element and an insulating part, or a combination of an insulating part and a radiator plate. The insulating part is composed of a Cu/SiNx/Cu laminated body.

Abstract: An iridium-based alloy which has L12-type intermetallic compounds dispersedly precipitated therein and has a basic composition including, in terms of mass proportion, 0.1 to 9.0% Al, 1.0 to 45% W, and Ir as the remainder. The component system containing 0.1 to 1.5% Al has L12-type intermetallic compounds dispersedly precipitated therein. The component system containing 1.5 to 9.0%, excluding 1.5%, Al has L12-type and B2-type intermetallic compounds dispersedly precipitated therein. Part of the Ir may be replaced with an element (X) (Co, Ni, Fe, Cr, Rh, Re, Pd, Pt, or Ru) and part of the Al and W may be replaced with an element (Z) (Ni, Ti, Nb, Zr, V, Ta, Hf, or Mo). The iridium-based alloy, which contains L12-type intermetallic compounds [1r3(Al,W) and [(Ir, X)3(Al, W, Z)] dispersedly precipitated therein, has a high melting point. The lattice constant mismatch between the L12-type intermetallic compounds, i.e.

Abstract: An iron-based alloy having shape memory properties and superelasticity, which has a composition comprising 25-35% by mass of Ni, 13-25% by mass of Co, 2-8% by mass of Al, and 1-20% by mass in total of at least one selected from the group consisting of 1-5% by mass of Ti, 2-10% by mass of Nb and 3-20% by mass of Ta, the balance being substantially Fe and inevitable impurities, and a recrystallization texture substantially comprising a ? phase and a ?? phase, particular crystal orientations of the ? phase being aligned, and the difference between a reverse transformation-finishing temperature and a martensitic transformation-starting temperature being 100° C. or less in the thermal hysteresis of martensitic transformation and reverse transformation.

Abstract: It is an object of the present invention to provide a ferromagnetic Fe-based alloy having a large reversible strain obtained by application and removal of a magnetic field gradient. The Fe-based alloy contains one or two or more types selected from Al: 0.01 to 11%, Si: 0.01 to 7% and Cr: 0.01 to 26%, or Al: 0.01 to 11%, Si: 0.01 to 7%, Cr: 0.01 to 26% and Ni: 35 to 50%. A twin crystal interface is introduced by working the Fe-based alloy at a working rate: 10% or more. An area ratio of the twin crystal interface to a crystal grain boundary is 0.2 or more. One or two or more types of Ti: 0.01 to 5%, V: 0.01 to 10%, Mn: 0.01 to 5%, Co: 0.01 to 30%, Ni: 0.01 to 10%, Cu: 0.01 to 5%, Zr: 0.01 to 5%, Nb: 0.01 to 5%, Mo: 0.01 to 5%, Hf: 0.01 to 5%, Ta: 0.01 to 5%, W: 0.01 to 5%, B: 0.001 to 1%, C: 0.001 to 1%, P: 0.001 to 1% and S: 0.001 to 1% may be added to the Fe-based alloy if needed.

Abstract: Magnetic thin film having high spin polarizability and a magnetoresistance effect device and a magnetic device using the same, provided with a substrate (2) and Co2MGa1-xAlx thin film (3) formed on the substrate (2), the Co2MGa1-xAlx thin film (3) has a L21 or B2 single phase structure, M of the thin film is either one or two or more of Ti, V, Mo, W, Cr, Mn, and Fe, an average valence electron concentration Z in M is 5.5?Z?7.5, and 0?x?0.7, shows ferromagnetism at room temperature, and can attain high spin polarizability. A buffer layer (4) may be inserted between the substrate (2) and the Co2FexCr1-xAl thin film (3). The tunnel magnetoresistance effect device and the giant magnetoresistance effect device using this magnetic thin film can attain large TMR and GMR at room temperature under the low magnetic field.

Abstract: A Co based alloy including at least one member selected from among 0.01 to 10% Fe, 0.01 to 30% Ni and 0.01 to 25% Mn, which Co based alloy has a metal structure wherein ?-phase of h.c.p. structure having been generated by heat-induced or stress-induced transformation is formed in a ratio of 10 vol. % or more. According to necessity, there may be added at least one member selected from among 0.01 to 10% Al, 0.01 to 35% Cr, to 20% V, 0.01 to 15% Ti, 0.01 to 30% Mo, 0.01 to 10% Nb, to 3% Zr, 001 to 30% W, 0.01 to 10% Ta, 0.01 to 5% Hf, 0.01 to 8% Si, 0.001 to 3% C, 0.001 to 3% B, 0.001 to 3% P and 0.001 to 3% misch metal. The Co based alloy exhibits high elastic deformation capability and is good in ductility and workability. The Co based alloy is used as a functional material of, for example, sensor or actuator capable of displacement control by magnetic field application.

Abstract: A guide wire includes a distal core member made of a ferrous alloy which has shape memory properties and superelasticity. The ferrous alloy preferably includes substantially two phases, and has a difference of 100° C or less between an Af point and an Ms point in a thermal hysteresis of martensitic transformation and reverse transformation. The guide wire may include a proximal core member made of an iron-containing alloy and having a higher modulus of elasticity than the distal core member. The two core members may be joined together by welding to form a core of the guide wire.

Abstract: An iridium-based alloy which has Ll2-type intermetallic compounds dispersedly precipitated therein and has a basic composition including, in terms of mass proportion, 0.1 to 9.0% Al, 1.0 to 45% W, and Ir as the remainder. The component system containing 0.1 to 1.5% Al has L12-type intermetallic compounds dispersedly precipitated therein. The component system containing 1.5 to 9.0%, excluding 1.5%, Al has Ll2-type and B2-type intermetallic compounds dispersedly precipitated therein. Part of the Ir may be replaced with an element (X) (Co, Ni, Fe, Cr, Rh, Re, Pd, Pt, or Ru) and part of the Al and W may be replaced with an element (Z) (Ni, Ti, Nb, Zr, V, Ta, Hf, or Mo). The iridium-based alloy, which contains L12-type intermetallic compounds [1r3(Al,W) and [(Ir, X)3(Al, W, Z)] dispersedly precipitated therein, has a high melting point. The lattice constant mismatch between the L12-type intermetallic compounds, i.e.

Abstract: A Co-based alloy being useful as a spiral spring, common spring, wire, cable guide, steel belt, build-up material, guide wire, stent, catheter, etc. There is provided a Co-based alloy having a composition of Co—Al binary system containing 3-13% Al loaded with at least one workability enhancing element selected from among 001 to 50% Ni, 0.01 to 40% Fe and 0.01 to 30% Mn and having a lamellar structure wherein f.c.c. structure ?-phase and ?(B2)-phase are repeated in layers. The lamellar structure is so regulated that the occupancy ratio of the whole structure is 30 vol. % or above and the layer spacing is 100 ?m or less. The Co-based alloy may contain at least one optional component selected from among Ga, Cr, V, Ti, Mo, Nb, Zr, W, Ta, Hf, Si, Rh, Pd, Ir, Pt, Au, B, C and P may be added in a total amount of 0.01 to 60%.

Abstract: A Co-base alloy which has a basic composition including, in terms of mass proportion, 0.1%-10% Al, 3.0-45% W, and Co as the remainder and has an intermetallic compound of the Ll2 type [Co3(Al,W)] dispersed and precipitated therein. Part of the Co may be replaced with Ni, Ir, Fe, Cr, Re, or Ru, while part of the Al and W may be replaced with Ni, Ti, Nb, Zr, V, Ta or Hf. The intermetallic compound [Co3(Al, W)] has a high melting point, and this compound and the matrix are mismatched little with respect to lattice constant. Thus, the cobalt-base alloy can have high-temperature strength equal to that of nickel-base alloys and excellent structure stability.

Abstract: Provided is free cutting alloy excellent in machinability, preserving various characteristics as alloy. The free cutting alloy contains: one or more of Ti and Zr as a metal element component; and C being an indispensable element as a bonding component with the metal element component, wherein a (Ti,Zr) based compound including one or more of S, Se and Te is formed in a matrix metal phase. The free cutting alloy is more excellent in machinability, preserving various characteristics as alloy at similar levels to a conventional case. The effect is especially conspicuous, for example, when a compound expressed in a chemical form of (Ti,Zr)4C2(S,Se,Te)2 as the (Ti,Zr) based compound is formed at least in a dispersed state in the alloy structure.

Abstract: Provided is free cutting alloy excellent in machinability, preserving various characteristics as alloy. The free cutting alloy contains: one or more of Ti and Zr as a metal element component; and C being an indispensable element as a bonding component with the metal element component, wherein a (Ti,Zr) based compound including one or more of S, Se and Te is formed in a matrix metal phase. The free cutting alloy is more excellent in machinability, preserving various characteristics as alloy at similar levels to a conventional case. The effect is especially conspicuous, for example, when a compound expressed in a chemical form of (Ti,Zr)4C2(S,Se,Te)2 as the (Ti,Zr) based compound is formed at least in a dispersed state in the alloy structure.

Abstract: A shape memory alloy comprises Co, Ni and Al with a two-phase structure comprising a ?-phase having a B2 structure and a ?-phase having an fcc structure, at least 40% by area of crystal grain boundaries of the ?-phase being occupied by the ?-phase. The shape memory alloy can be produced by a first heat treatment step comprising heating at 1200 to 1350° C. for 0.1 to 50 hours and cooling at 0.1 to 1000° C./minute, and a second heat treatment step comprising heating at 1000 to 1320° C. for 0.1 to 50 hours and cooling at 10 to 10000° C./minute.

Abstract: Provided is free cutting alloy excellent in machinability, preserving various characteristics as alloy. The free cutting alloy contains: one or more of Ti and Zr as a metal element component; and C being an indispensable element as a bonding component with the metal element component, wherein a (Ti,Zr) based compound including one or more of S, Se and Te is formed in a matrix metal phase. The free cutting alloy is more excellent in machinability, preserving various characteristics as alloy at similar levels to a conventional case. The effect is especially conspicuous, for example, when a compound expressed in a chemical form of (Ti,Zr)4C2(S,Se,Te)2 as the (Ti,Zr) based compound is formed at least in a dispersed state in the alloy structure.

Abstract: A member having a separated structure made by an alloy consisting of two regions having different compositions with each other is formed by casting a molten alloy into a prescribed shape, or by spray-quenching the same from a temperature of Tc+10° C. or more, wherein the molten alloy exhibits two phase separation in a liquid state having a temperature difference ?T between the maximum temperature Tc (° C.) and minimum temperature Td (° C.) in the region of two phase separation in the liquid state being 10° C. or more, and the molten alloy has a mean composition with a difference of the volume fraction between the two liquid phases of 5% by volume or more. The suitable alloy is a Cu—Fe—X alloy, a Cu—Cr—X alloy, a Cu—Co—X alloy, a Cu—Bi—X alloy, an Al—Sn—X alloy or an Al—In—X alloy.

Abstract: A thermoelectric module comprises a plurality of thermoelectric elements which are arranged between a pair of substrates having electrode patterns and which are bonded with the electrode patterns via solder in which at least one dispersion phase is dispersed into a matrix phase, wherein the melting temperature of the dispersion phase is higher than that of the matrix phase (i.e., 240° C. or over), and the dispersion phase comprises fine particles whose average diameter is 5 ?m or less. The solder is constituted by an alloy so as to realize a volume ratio of 40% or less, wherein it is composed of a Bi—Cu—X alloy or a Bi—Zn—X alloy (where ‘X’ represents at least one element selected in advance). Preferably, the solder is constituted by powder containing fine particles whose average diameter is 100 ?m or less or thin plates whose average thickness is 500 ?m or less.

Abstract: A continuous vacuum carburizing process carburizes material such as a steel wire 7 with a carbon content equal to or less than a desired carbon content by passing it under reduced pressure continuously through a carburizing atmosphere 5 with constant pressure and constant gas composition. A continuous vacuum carburizing apparatus for carrying out this process has at least one furnace core tube 1, 11, or 12 and a feeding/taking-up mechanism 13, 14 for the steel wire 7 in a vacuum container 1. Carburizing medium gas is supplied to the furnace core tube 1 via pipes 2, 4 to form the carburizing atmosphere 5. A heater 10 heats the furnace core tube 1, thereby activating carbon of the carburizing medium gas. In this way, material having a small thickness of, for example, 0.02 mm to 3 mm is carburized with less variation in the amount of carburization and no surface oxidation or sooting.