Tanaka Kikinzoku Kogyo K.k.

Nihon Dempa Kogyo Co., Ltd.

Takeyuki Sagae

Masayuki Saito

Michimasa Okubo

Yuki Horinouchi

Akira Inoue

Mizuki Nihei

Kunihiro Shima

Toshinori Ogashiwa

Katsunori Akane

Takashi Terui

Masaaki Kurita

Shohei Takeda

Jun-ichi Taniuchi

Kenzo Okamoto

Shinji Kouno

Kenichi Ueki

Takeshi Fuse

A probe pin material including a Ag&#x2014;Pd&#x2014;Cu-based alloy essentially including Ag, Pd and Cu, B as a first additive element, and at least any element of Zn, Bi and Sn, as a second additive element. A concentration of the first additive element is 0.1 mass % or more and 1.5 mass % or less, and a concentration of the second additive element is 0.1 mass % or more and 1.0 mass % or less. A Ag concentration, a Pd concentration and a Cu concentration in the Ag&#x2014;Pd&#x2014;Cu-based alloy are required as follows: a Ag concentration (S), a Pd concentration (S) and a Cu concentration (S) converted as given that a Ag&#x2014;Pd&#x2014;Cu ternary alloy is formed from only such three elements all fall within a predetermined range in a Ag&#x2014;Pd&#x2014;Cu ternary system phase diagram. The probe pin material is excellent in resistance value and hardness/wear resistance, and also is enhanced in bending resistance.

Probe pin material including Ag&#x2014;Pd&#x2014;Cu-based alloy

The present invention relates to a medical Pt&#x2014;W alloy, containing 10 mass % or more and 15 mass % or less of W, with the balance being Pt and inevitable impurities, in which a Zr content is 1000 ppm or less. Limiting the Zr content can improve workability, particularly workability at the stage of hot working. Regarding impurity control, further limiting a Ca content to 250 ppm or less can provide more suitable workability. The present invention is good in workability in processing into a wire included in an embolic coil, a guide wire or the like.

Medical Pt-W alloy

The present invention is drawn to a medical Pt alloy wire, made of a Pt&#x2014;W alloy containing 10% by mass or more and 15% by mass or less of W, a balance of Pt, and inevitable impurities. The Pt alloy wire has Vickers hardness of 400 Hv or more and 600 Hv or less, and has hardness and strength superior to those of a conventional Pt alloy wire having the same composition. The Pt alloy wire of the present invention has properties preferable as a coil applied to an embolic coil or a guide wire or the like, and is also good in workability in secondary processing for producing such a medical tool.

Medical Pt alloy wire and medical Pt alloy coil

An electrode material capable of making more satisfactory the dispersion at the time of production and the aging property of a resonator than Au and capable of reducing the price as compared to Au. An resonator electrode material including a ternary alloy composed of Au and two metals Mand M, and being used as an excitation electrode to excite oscillation in a piezoelectric element, wherein the two metals Mand Mare, respectively, (a) metal M: a metal exhibiting a tendency to decrease the temporal frequency property (&#x394;f/f) from the reference value f, and (b) metal M: a metal exhibiting a tendency to increase the temporal frequency property (&#x394;f/f) from the reference value f. The metal Mis preferably at least any one of Ag, Al and Ni, and the metal Mis preferably at least any one of Pd, Ru, Pt, Ir, Rh and Cu.

Resonator electrode material excellent in aging property, piezoelectric resonator using the same material, and sputtering target made of the same material

The present invention provides a catalyst comprising particles of one or more catalytic metals supported on a porous carrier made of one or more metal oxides, wherein the porous carrier is made of an oxide containing a rare earth oxide, and that the catalytic metal particles are made of one or more transition metals or transition metal oxides having 10 to 50000 atoms. In the present invention, cluster-like catalyst particles are supported on a specific carrier. The catalyst of the present invention maintains desirable activity while changing the morphology of catalyst particles by the atmosphere of the catalyst.

Catalyst

The object of the present invention is to provide a catalyst that is highly active and capable of maintaining its activity for a long period of time even in a high-temperature environment. The present invention is a catalyst including: a porous carrier which is comprised of one kind of or two or more kinds of metal oxides; and catalyst particles which are comprised of precious metals or precious metal oxides and supported on the above porous carrier, characterized in that the catalyst particles include: clustered particles formed by the aggregation of first precious metal atoms; and second precious metal ions bound to the above clustered particles. Preferably, the first precious metal and the second precious metal are different metal species which are selected from the group consisting of platinum, palladium, rhodium, ruthenium, silver, gold, iridium and osmium.

Catalyst and process for preparing the same

The present invention provides a method of manufacturing a bis(cyclopentadienyl)ruthenium, comprising the step of synthesizing a bis(cyclopentadienyl)ruthenium by causing cyclopentadiene, ruthenium chloride and zinc powder to react in an alcohol solvent, wherein the synthesis of the bis(cyclopentadienyl)ruthenium comprises the step of mixing the cyclopentadiene and zinc powder in the alcohol solvent and thereafter adding ruthenium chloride portionwise while holding the temperature of the reaction system at from &#x2212;70&#xb0; C. to 20&#xb0; C. A highly pure product can be obtained through purification of subliming bis(cyclopentadienyl)ruthenium having been synthesized in the synthesis step in an atmosphere under reduced pressure.

Method of manufacturing bis(cyclopentadienly)ruthenium and bis(cyclopentadienyl)ruthenium manufactured by the same

The present invention relates to a raw material for CVD comprising an organic iridium compound as a main component, said organic iridium compound being tris(2,4-octanedionato)iridium represented by Formula 1. Particularly preferably, the raw material for CVD consists only of the trans isomer of tris(2,4-octanedionato)iridium.

CVD material compound and method for manufacturing the same, and CVD method of iridium or iridium compound thin film

This invention provides raw material compounds for use in CVD which contain organic ruthenium compounds as a main ingredient, the organic ruthenium compounds having two &bgr;-diketones plus one diene, one diamine or two organic ligands which are coordinated with ruthenium. In this invention, the vapor pressures of the organic ruthenium compounds are made preferable by specifying the number of the carbon atoms contained in the above &bgr;-diketones and the types of the above diene etc.

Raw material compounds for use in CVD, and chemical vapor deposition of ruthenium compound thin films

This invention provides raw material compounds for use in CVD which contain an organic iridium compound as a main ingredient, the organic iridium compound consisting of tris(5-methyl-2,4-hexanedionato)iridium. According to the CVD which uses the above raw material compounds, a pure iridium thin film and an iridium oxide thin film of excellent morphology can be produced effectively.

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Hiratsuka, Japan

Takeyuki Sagae