Abstract: An energy converter is formed by bonding a solid soft magnetic material and a solid magnetostrictive material. A vibration power generator is configured to generate power by means of the inverse magnetostriction effect of the magnetostrictive material produced by the vibration of a vibration unit configured using the energy converter. A force sensor device includes a force detection unit that detects magnetization change resulting from the inverse magnetostriction effect of the magnetostrictive material produced when a sensor unit configured using the energy converter deforms, and determines force acting on the sensor unit on the basis of the detected magnetization change. An actuator is configured to vibrate the vibration unit configured using the energy converter by means of the magnetostriction effect of the magnetostrictive material.

Abstract: An energy converter is formed by bonding a solid soft magnetic material and a solid magnetostrictive material. A vibration power generator is configured to generate power by means of the inverse magnetostriction effect of the magnetostrictive material produced by the vibration of a vibration unit configured using the energy converter. A force sensor device includes a force detection unit that detects magnetization change resulting from the inverse magnetostriction effect of the magnetostrictive material produced when a sensor unit configured using the energy converter deforms, and determines force acting on the sensor unit on the basis of the detected magnetization change. An actuator is configured to vibrate the vibration unit configured using the energy converter by means of the magnetostriction effect of the magnetostrictive material.

Abstract: A vibration powered generator capable of vibrating at a plurality of resonance frequencies to generate electric power with a simpler structure is provided. A vibration powered generator has an elongated magnetostrictive material having one end attached to a vibrating body, in which the magnetostrictive material vibrates due to vibration of the vibrating body whereby the vibration powered generator generates electric power with the aid of an inverse magnetostrictive effect of the magnetostrictive material. A cross-sectional shape vertical to a longitudinal direction of the magnetostrictive material has an asymmetrical shape with respect to a straight line extending along a vibration direction thereof due to vibration of the vibrating body.

Abstract: A method for producing a magnetostrictive material and a method for increasing the value of magnetostriction can increase the value of magnetostriction of magnetostrictive materials used, for example, in vibration power generation and force sensors utilizing inverse magnetostriction phenomenon. A magnetostrictive material having a value of magnetostriction of 100 ppm or more is produced by melting and casting an alloy material in the composition of range of 67-87 wt % Co with the balance consisting of Fe and unavoidable impurities and then performing hot forging. Furthermore, a magnetostrictive material having a value of magnetostriction of 130 ppm or more can be produced by performing cold rolling after the hot forging. Heat treatment at 400-1000° C. may also be performed after hot working or cold working.

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 precipitation-hardened soft magnetic ferritic stainless steel comprises C: not more than 0.2 mass %, Si: 0.01-3.0 mass %, Mn: not more than 0.5 mass %, S: not more than 0.3 mass %, Cr: 12.0-19.0 mass %, Ni: 1.0-4.0 mass % and Al: 0.2-4.0 mass % and further contains at least one of Ti: less than 0.5 mass % and Zr: less than 0.3 mass % and the remainder being inevitable impurities and Fe, and has substantially a microstructure of a ferrite phase after a solution treatment and an aging treatment.

Abstract: A fluid control valve, which can control a fluid having a pressure in the order of 10 kg/cm2, has a response time in the order of several milliseconds can be made small in size, and a fluid supply/exhaust system that provides less gas counter flow in the event of a plurality of valves being used. A fluid control valve of the invention controls a fluid moving in a valve body by closing and opening a portion between a valve seat and a valve holder by use of a drive unit. The drive unit has a rod-shaped shaft for application of pressure through the valve seat and the valve holder, and a member “a” fixed around the rod-shaped shaft. The member “a” is made from a magnetic material, and has a space between it and the shaft. A coil provided in parallel to the shaft, moves the shaft via the member “a” up and down by electromagnetic induction, and makes use of a spring force to close and open a portion between the valve seat and the valve holder.

Abstract: A fluid control valve, which can control a fluid having a pressure in the order of 10 kg/cm2, has a response time in the order of several milliseconds can be made small in size, and a fluid supply/exhaust system that provides less gas counter flow in the event of a plurality of valves being used. A fluid control valve of the invention controls a fluid moving in a valve body by closing and opening a portion between a valve seat and a valve holder by use of a drive unit. The drive unit has a rod-shaped shaft for application of pressure through the valve seat and the valve holder, and a member “a” fixed around the rod-shaped shaft. The member “a” is made from a magnetic material, and has a space between it and the shaft. A coil provided in parallel to the shaft, moves the shaft via the member “a” up and down by electromagnetic induction, and makes use of a spring force to close and open a portion between the valve seat and the valve holder.

Abstract: A steel for exhaust valves comprises C: 0.50-0.65 wt %, Si: 0.1-0.3 wt %, Mn: 5.0-8.0 wt %, Cr: 22.0-24.0 wt %, Ni: 5.0-7.0 wt %, Cu: 0.4-1.0 wt %, Mo: 0.4-2.0 wt %, W: 0.4-2.0 wt %, Nb: 0.4-2.0 wt %, Ti: 0.1-0.3 wt %, N: 0.35-0.50 wt %, sol. Al: 0.005-0.03 wt %, B: 0.001-0.01 wt %, provided that (Cu+Ni): 5.8-7.6 wt %, and the balance being Fe and inevitable impurities and has excellent high-temperature strength, corrosion resistance at room and higher temperatures and oxidation resistance.

Abstract: A magnetic recording medium having a magnetic layer formed by a thin film deposition method, said magnetic layer comprising Fe as the principal component together with Co, Ni, and Cr, further containing at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Mo, W, Cu, Mn and Sb.

Abstract: A film type magnetic recording medium comprising as a magnetic recording layer an iron-cobalt-nickel-chromium magnetic alloy containing 10-51 wt. % cobalt, 1-30 wt. % nickel, 1-10 wt. % of chromium and 6 wt. % or less of at least one of the elements molybdenum, tungsten, vanadium, niobium, tantalum, copper, titanium and zirconium, high in durability and magnetic property, and moreover, capable of easily forming a magnetic alloy film thereon by vacuum deposition.

Abstract: A magnetic recording medium having a magnetic layer formed by a thin film deposition method, characterized in that the magnetic layer contains Fe as the principal component, Co, Ni and at least one of Mn, Cu, V, Nb, Ta, Mo, W, Ti, Zr and Hf.