Other

Yoshida Kogyo K.k.

Tohoku University

Ngk Insulators, Inc.

Alps Electric Co., Ltd.

Japan Science and Technology Corporation

Japan Science and Technology Agency

Research Development Corporation of Japan

Honda Giken Kogyo Kabushiki Kaisha

Aisin Seiki Kabushiki Kaisha

Ykk Corporation

Toyota Jidosha Kabushiki Kaisha

Yamaha Corporation

Hoya Corporation

Unitika Ltd.

Akihisa Inoue

Tsuyoshi Masumoto

Hisamichi Kimura

Tao Zhang

Naokuni Muramatsu

Masahiro Oguchi

Katsumasa Odera

Akihiro Makino

Kazuhiko Kita

Hitoshi Yamaguchi

Nobuyuki Nishiyama

Kiyonori Suzuki

Ken Suzuki

Toshisuke Shibata

Yoshio Harakawa

Takashi Sakuma

Masahide Onuki

Junichi Nagahora

Noriaki Matsumoto

Noriyuki Kataoka

Yoshiyuki Shinohara

Mikio Mottate

Kikuo Nishi

Kunio Matsuzaki

Akira Kato

Takeshi Wada

Shoji Yoshida

Takashi Hatanai

Hiroyuki Horimura

Masami Ishii

Tetsuo Yamaguchi

Teruhiko Fujiwara

Tadashi Yamaguchi

Tetsuo Oka

Tetsuya Suganuma

Yuma Horio

Ryohei Yabuno

Akinori Kojima

Hideki Takeda

Akiri Urata

Yutaka Yamamoto

Hidemi Kato

Hatsuo Hirono

Naomasa Kimura

Jun Nishibayashi

Uichiro Mizutani

Kazuo Aikawa

Keiji Moroishi

Hideo Fukui

Yutaka Sato

Hisashi Kakiuchi

Yukio Okochi

Hiroyuki Tomioka

Katsumasa Ohtera

Wei Zhang

Kazuaki Sato

Haruyoshi Minamiguchi

Takashi Goto

Hiroyuki Matsumoto

Hiroyuki Wakiwaka

Koji Nakashima

Yasunobu Yamada

Takanori Igarashi

Keiko Yamagata

Katsuaki Hangai

Yoshitsugu Motoe

Masaharu Sugiyama

Yoshitaka Nagai

Koichi Moriyama

Madoka Nakajima

Baolong Shen

Tsuyoshi Matsumoto

Takahiro Aoki

Takeshi Suto

Takumi Sakamoto

Takeshi Kamoshida

Yasusi Takahagi

Kazuya Saito

Haruko Yamazaki

Shunsuke Arakawa

Akira Hoshi

Yoshimi Takahashi

Tomohito Ishikawa

Kunio Yubuta

Akihiro Uoya

Masaki Nagata

Motohiro Kameyama

Yoshihiko Yokoyama

An amorphous soft magnetic alloy of the formula (FeTM)PBLSiTiCMnCu, wherein TM is Co or Ni; L is Al, Cr, Zr, Mo or Nb; 0&#x2264;&#x3b1;&#x2264;0.3, 2&#x2264;w&#x2264;18 at %, 2&#x2264;x&#x2264;18 at %, 15&#x2264;w+x&#x2264;23 at %, 1&#x3c;y&#x2264;5 at %, 0&#x2264;z&#x2264;4 at %; p, q, r, and s represents an addition ratio such that the total mass of Fe, TM, P, B, L and Si is 100, and 0&#x2264;p&#x2264;0.3, 0&#x2264;q&#x2264;0.5, 0&#x2264;r&#x2264;2, 0&#x2264;s&#x2264;1 and r+s&#x3e;0; the composition fulfills one of the following conditions: L is Cr, Zr, Mo or Nb; or L is a combination of Al and Cr, Zr, Mo or Nb, wherein 0&#x3c;Al&#x2264;5 at %, 1&#x2264;Cr&#x2264;4 at %, 0&#x3c;Zr&#x2264;5 at %, 2&#x2264;Mo&#x2264;5 at %, and 2&#x2264;Nb&#x2264;5 at %; the alloy has a crystallization start temperature (Tx) which is 550&#xb0; C. or less, a glass transition temperature (Tg) which is 520&#xb0; C. or less, and a supercooled liquid region represented by &#x394;Tx=Tx&#x2212;Tg, which is 20&#xb0; C. or more.

Amorphous soft magnetic alloy and inductance component using the same

A copper alloy of the present invention contains 5.00 to 8.00 atomic percent of Zr and includes Cu and a Cu&#x2014;Zr compound, and two phases of the Cu and the Cu&#x2014;Zr compound form a mosaic-like structure which includes no eutectic phase and in which when viewed in cross section, crystals having a size of 10 &#x3bc;m or less are dispersed. This copper alloy is formed by a manufacturing method including a sintering step of performing spark plasma sintering on a Cu&#x2014;Zr binary system alloy powder at a temperature of 0.9 Tm &#xb0; C. or less (Tm(&#xb0; C.): melting point of the alloy powder) by supply of direct-currant pulse electricity, the Cu&#x2014;Zr binary system alloy powder having an average grain diameter of 30 &#x3bc;m or less and a hypoeutectic composition which contains 5.00 to 8.00 atomic percent of Zr. The Cu&#x2014;Zr compound may include at least one of CuZr, CuZr, and CuZr.

Copper alloy and method for manufacturing the same

A copper alloy wire rod includes a copper parent phase and short fiber-shaped composite phases which are dispersed in the copper parent phase and which contain CuZrand Cu, wherein the content of Zr is within the range of 0.2 atomic percent or more and 1.0 atomic percent or less. This copper alloy wire rod can be obtained by including the steps of melting a raw material in such a way that a copper alloy having a Zr content within the above-described range of is produced so as to obtain a molten metal in a melting step, casting the molten metal so as to obtain an ingot in a casting step, and subjecting the ingot to cold wire drawing in a wire drawing step, wherein the wire drawing step and a treatment after the wire drawing step are performed at lower than 500&#xb0; C.

Copper alloy wire rod and method for manufacturing the same

Disclosed is a beryllium-free copper alloy having high strength, high electric conductivity and good bending workability and a method of manufacturing the copper alloy. Provided is a copper alloy having a composition represented by the composition formula by atom %: Cu100-a-b-c(Zr, Hf)a(Cr, Ni, Mn, Ta)b(Ti, Al)c [wherein 2.5&#x2266;a&#x2266;4.0, 0.1&#x3c;b&#x2266;1.5 and 0&#x2266;c&#x2266;0.2; (Zr, Hf) means one or both of Zr and Hf; (Cr, Ni, Mn, Ta) means one or more of Cr, Ni, Mn and Ta; and (Ti, Al) means one or both of Ti and Al], and having Cu primary phases in which the mean secondary dendrite arm spacing is 2 &#x3bc;m or less and eutectic matrices in which the lamellar spacing between a metastable Cu5(Zr, Hf) compound phase and a Cu phase is 0.2 &#x3bc;m or less.

Copper alloy and method of manufacturing copper alloy

For providing a magnetostrictive film that can exhibit high magnetostrictive properties in the vicinity of zero magnetic field and their manufacturing methods, a magnetostrictive film thermal sprayed on an object under test includes a metallic glass film subjected to thermal processing at a temperature lower than the glass transition temperature and not lower than the Curie point, and shows a linearity between the magnetic field and the magnetostriction in at least a part of the magnetic field from &#x2212;15 kA/m to +15 kA/m (both inclusive).

Magnetostrictive film, magnetostrictive element, torque sensor, force sensor, pressure sensor, and manufacturing method therefor

A metallic material containing both a second constituent and a third constituent having positive and negative heats of mixing relative to a first constituent, respectively, and including a compound, an alloy or a nonequilibrium alloy having a melting point that is higher than the solidifying point of a metal bath made of the first constituent is placed in the metal bath. The metal bath is controlled to a temperature lower than a minimum value of a liquidus temperature within a range of compositional variations in which the amount of the third constituent in the metallic material decreases down to a point where the metallic material becomes substantially the second constituent so that the third constituent is selectively dissolved into the metal bath.

Metal member manufacturing method and metal member

The zirconium content of the alloy composition of a copper alloy foil of the present invention is 3.0 to 7.0 atomic percent, and the copper alloy foil includes copper matrix phases and composite phases composed of copper-zirconium compound phases and copper phases. As shown in FIG., the copper matrix phases and the composite phases form a matrix phase-composite phase layered structure and are arranged alternately parallel to a rolling direction as viewed in a cross-section perpendicular to the width direction. In addition, the copper-zirconium compound phases and the copper phases in the composite phases form a composite phase inner layered structure and are arranged alternately parallel to the rolling direction at a phase pitch of 50 nm or less as viewed in the above cross-section. This double layered structure presumably makes the copper alloy foil densely layered to provide a strengthening mechanism similar to multilayer reinforced composite materials.

Copper alloy foil, flexible printed circuit board using the same, and method for producing copper alloy foil

The zirconium content of the alloy composition of a copper alloy wire is 3.0 to 7.0 atomic percent; and the copper alloy wire includes copper matrix phases and composite phases composed of copper-zirconium compound phases and copper phases. The copper matrix phases and the composite phases form a matrix phase-composite phase fibrous structure and are arranged alternately parallel to an axial direction as viewed in a cross-section parallel to the axial direction and including a central axis. The copper-zirconium compound phases and the copper phases in the composite phases also form a composite phase inner fibrous structure and are arranged alternately parallel to the axial direction at a phase pitch of 50 nm or less as viewed in the above cross-section. This double fibrous structure presumably makes the copper alloy wire densely fibrous to provide a strengthening mechanism similar to the rule of mixture for fiber-reinforced composite materials.

Copper alloy wire and method for producing the same

A method of coloring a surface of a zirconium-based metallic glass component that includes the step of imparting interference colors by carrying out an anodizing process using an alkaline solution to form a film having a thickness of 300 nm or less on the surface of the zirconium-based metallic glass component.

Method of coloring surface of zirconium-based metallic glass component

An arc melting furnace apparatus is provided which reduces an operation burden on a worker and shortens working hours. An arc melting furnace apparatusincludes a housinghaving formed therein a melting chamber, a hearthprovided within the melting chamberand having a recessed portion, and a heating mechanismfor heating and melting a metal material supplied into the recessed portionto generate an alloy ingot. The apparatus comprises a turning memberrotatably supported on a supporting memberstanding within the melting chamber, a perimeter edge of the turning memberrotating and moving along the inner surface of the recessed portionto lift the alloy ingot generated in the recessed portionabove the hearthand turn it over, and a resilient turn-over assisting memberprovided above an upper end of the recessed portion. Further, the turn-over assisting memberis arranged to flex by a predetermined amount when the alloy ingot abuts it, and to return to its original state from the flexed state so that the alloy ingot is urged to drop into the recessed portion

Arc melting furnace apparatus

The present invention provides Cu-base amorphous alloys containing an amorphous phase of 90% or more by volume fraction. The amorphous phase has a composition represented by the formula: Cu(Zr+Hf)Tior Cu(Zr+Hf')TiMT, wherein M is one or more elements selected from Fe, Cr, Mn, Ni, Co, Nb, Mo, W, Sn, Al, Ta and rare earth elements, T is one or more elements selected from the group consisting of Ag, Pd, Pt and Au, and a, b, c and d are atomic percentages falling within the following ranges: 5&#x2266;a&#x2266;55, 0&#x2266;b&#x2266;45, 30&#x2266;a+b&#x2266;60, 0.5&#x2266;c&#x2266;5, 0&#x2266;d&#x2266;10. The Cu-base amorphous alloy has a high glass-forming ability as well as excellent mechanical properties and formability, and can be formed as a rod or plate material with a diameter or thickness of 1 mm or more and an amorphous phase of 90% or more by volume fraction, through a metal mold casting process.

Method of making a Cu-base bulk amorphous alloy

A method for forming a metallic glass, which comprises a step of subjecting a metallic glass to a rough forming by die casting, to prepare a roughly formed article, and a step of heating the roughly formed article to a temperature region corresponding to an undercooled liquid thereof, followed by subjecting the heated article to warm press forming.

Method of forming metallic glass

Disclosed is a Fe&#x2014;Ga&#x2014;P&#x2014;C&#x2014;B&#x2014;Si based metallic glass alloy particle prepared by a gas atomizing process, which has an approximately complete spherical shape, a relatively large particle size and a high crystallization temperature (Tx). The plurality of particles may be subjected to a spark plasma sintering process at the crystallization temperature or less under a compression pressure of 200 MPa or more, to provide a bulk Fe-based sintered metal soft magnetic material of metallic glass, which has a high density, a single phase structure of metallic glass in an as-sintered state, excellent soft magnetic characteristics applicable to a core of a magnetic head, a transformer or a motor, and a high specific resistance.

Spherical particles of Fe base metallic glass alloy, Fe base sintered alloy soft magnetic material in bulk form produced by sintering the same, and method for their production

A diecast machine comprises: a sleeve extending in a vertical direction; a plunger moving upward in the vertical direction inside the sleeve; a mold disposed above an upper side of the sleeve; and a metal material heater configured to heat a metal material disposed on the plunger and melting the metal material.

Diecast machine and diecast method

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Sendai, Japan

Akihisa Inoue