Other

Alps Electric Co., Ltd.

Yoshida Kogyo K.k.

Ykk Corporation

Honda Giken Kogyo Kabushiki Kaisha

Teikoku Piston Ring Co., Ltd.

Yamaha Corporation

Honda Motor Co., Ltd.

Sumitomo Rubber Industries Limited

Mitsubishi Materials Corporation

Unitika Ltd.

Japan Science and Technology Corporation

Nec Tokin Corporation

Ngk Insulators, Inc.

Tohoku University

Akihisa Inoue

Tsuyoshi Masumoto

Akihiro Makino

Takao Mizushima

Tao Zhang

Junichi Nagahora

Tadashi Yamaguchi

Masahide Onuki

Takashi Hatanai

Akinori Kojima

Katsutoshi Nosaki

Yuma Horio

Yutaka Yamamoto

Toshisuke Shibata

Hisamichi Kimura

Nobuyuki Nishiyama

Hiroshi Yamagata

Tetsuo Yamaguchi

Kazuhiko Kita

Hisashi Kakiuchi

Akira Takeuchi

Hiroyuki Horimura

Yoshishige Takano

Naoki Yoshida

Mitsuru Watanabe

Yoshihiro Hori

Naokuni Muramatsu

Eiichi Makabe

Kouichi Fujita

Yasuichi Ono

Hideki Takeda

Makoto Kawanishi

Katsumasa Ohtera

Yoshio Harakawa

Kenji Higashi

Haruyoshi Minamiguchi

Teruo Bitoh

Katsutoshi Nozaki

Junichi Ouchi

Jun Sasahara

Yasuo Hayakawa

Teruhiko Fujiwara

Toshihiko Kaji

Akiri Urata

Hisato Koshiba

Masahiro Oguchi

Jun Nishibayashi

Shinichi Sasagawa

Takeshi Taniguchi

Hideo Fukui

Hiroshi Nagasaka

Yoshihiro Sudo

Akio Ohnishi

Shin Takeda

Masato Otsuki

Kazuo Omiya

Yoshiyuki Shinohara

Yuichi Shonai

Taichi Maruyama

Toru Kohno

Hirokazu Yamamoto

Hidenobu Nagahama

Junji Iihara

Akinobu Kojima

Oki Yamaguchi

Toshisuke Shitata

Taisuke Otsubo

Naoyuki Kawashima

Naoyuki Makiuchi

Akira Tokairin

Katsumi Ose

Ryo Tominaga

Kouji Kajita

Junkou Kurosaki

Kiyoshi Okumura

Shinji Tonsho

Katsuhiro Fujita

Akihoro Makino

Shinichi Sasaqawa

Yutaka Naitoh

Tokuya Miyagi

Akiri c/o Nec Tokin Corporation Urata

Teruhiko c/o Nec Tokin Corporation Fujiwara

Kenment Suzuki

An emulsion composition according to the present invention includes: a polymerizable compound comprising two or more (meth)acryloyl groups; a surfactant; and a dispersion medium including water as a principal component, in which an oil droplet diameter Dcorresponding to a diameter at cumulative 90% by volume in the oil droplet size distribution of oil droplets comprising the polymerizable compound and the surfactant, measured according to a laser diffraction and scattering measurement process is less than 1.8 &#x3bc;m. A maximum oil droplet diameter Dof the oil droplets, measured according to the laser diffraction and scattering measurement process is preferably less than 4.0 &#x3bc;m. A content of the polymerizable compound in the composition with respect to 100 parts by mass of a total of components other than the dispersion medium is preferably no less than 40 parts by mass. The oil droplets may further comprise an inorganic particle.

Emulsion composition and production method thereof, and laminate and production method thereof

A cylindrical joining member is fitted into a member to be joined that is made of a material different from the joining member. Plastic deformation is effected in a soft material of the member to be joined to hermetically join the two members together. Joining faces are provided to the two members that face and are joined to each other by the plastic deformation and with an elastic deformation pressure in an axial direction. The soft material of the member to be joined, which is located in a circumferential direction of the member, bites into a joining portion of the joining member by the plastic deformation and with the elastic deformation pressure.

Pressure vessel formed by joining two members made of different materials

A high-frequency core is a molded body obtained by molding a mixture of a soft magnetic metallic glass powder and a binder in an amount of 10% or less in mass ratio. The powder has an alloy composition represented by a general formula (FeNiCo)(MM')TB(where 0&#x2266;a&#x2266;0.30, 0&#x2266;b&#x2266;0.50, 0&#x2266;a+b&#x2266;0.50, 0&#x2266;p&#x2266;0.5, 1 atomic %&#x2266;x&#x2266;5 atomic %, 1 atomic %&#x2266;y&#x2266;12 atomic %, 12 atomic %&#x2266;z&#x2266;25 atomic %, 22&#x2266;(x+y+z)&#x2266;32, M being at least one selected from Zr, Nb, Ta, Hf, Mo, Ti, V, Cr, and W, M&#x2032; being at least one selected from Zn, Sn, R (R being at least one element selected from rare earth metals including Y), T being at least one selected from Al, Si, C, and P). An inductance component includes the high-frequency core and at least one turn of winding wound around the core.

Magnetic core for high frequency and inductive component using same

A hard magnetic alloy in accordance with the present invention is composed of at least element T selected from the group consisting of Fe, Co and Ni, at least one rare earth element R, and boron (B). The hard magnetic alloy has an absolute value of the temperature coefficient of magnetization of 0.15%/&deg; C. or less and a coercive force of 1 kOe, when being used in a shape causing a permeance factor of 2 or more. A hard magnetic alloy compact in accordance with the present invention has a texture, in which at least a part or all of the texture comprises an amorphous phase or fine crystalline phase having an average crystal grain size of 100 nm or less, is subjected to crystallization or grain growth under stress, such that a mixed phase composed of a soft magnetic or semi-hard magnetic phase and a hard magnetic phase is formed in the texture, and anisotropy is imparted to the crystal axis of the hard magnetic phase.

Hard magnetic alloy, hard magnetic alloy compact and method for producing the same

A method for shot peening wherein peening shot having a Vickers hardness (Hv) in the range of 900-1100 and a Young's modulus of 200,000 MPa or less, is used, and wherein a treated article is obtained by such a method that has a maximum residual compressive stress of 1600 MPa or more and a surface roughness of 5 microns or less.

Method of shot peening processing and article processed thereby, and peening material and use thereof

A zirconium system amorphous alloy having a composition expressed by a general formula Zr Ti Al Cu Ni wherein a, b, X, and Y in the formula represent atomic percentage, and fulfill X<10, Y>5, Y<&minus;(1/2)X&plus;35/2, 15&lE;a&lE;25, and 5&lE;b&lE;15, the zirconium system amorphous alloy has an amorphous phase of more than 50 volume % of the alloy.

Zirconium system amorphous alloy

A golf club head comprises a face part defining a face for striking a golf ball, and at least a part of the face part made of an alloy satisfying the following three conditions: (1) the alloy is composed of at least three different metallic elements whose group numbers in the periodic system are at least two consecutive numbers; (2) a difference in the atomic radius between at least two of said at least three different metallic elements is not less than 10%; and (3) the heat of mixing of the element that is the major component of the alloy and at least one of the remaining components or the remaining component is not less than &minus;10 kcal/mol.

Golf club head

A golf club which has a clubface of desired shape comprising an alloy metal is provided. The golf club has excellent strength properties as well as excellent ball hitting properties. The clubface is free from casting defects such as cold shuts, and preferably, free from the crystalline phase formed from crystal nuclei through nonuniform nucleation since the club face is produced in a simple, highly reproducible, one-step process by selectively cooling the molten metal at a temperature above the melting point at a rate higher than the critical cooling rate, and the product comprises a single amorphous phase. The metallic glass face used in the golf club is produced by filling a metal material in a hearth; melting said metal material by using a high-energy heat source which is capable of melting said the metal material; pressing said the molten metal at a temperature above the melting point of said the metal material to deform the molten metal into the desired shape by at least one of compressive stress and shear stress at a temperature above the melting point, while avoiding the surfaces of the molten metal cooled to a temperature below the melting point of said the metal material from meeting with each other during the pressing; and cooling said the molten metal at a cooling rate higher than the critical cooling rate of the metal material simultaneously with or after said the deformation to produce the metallic glass face of desired form.

Golf club manufacturing method

A metal mold for manufacturing amorphous alloy. A metal mold is composed of a lower mold having a portion for fusing metal material and a cavity portion, and an upper mold working with the lower mold which presses molten metal in the portion for fusing metal material and pours the molten metal into the cavity portion to mold. And, surface roughness of a part of or all of an inner surface of the metal mold is arranged to be more than 12S in JIS indication.

Metal mold for manufacturing amorphous alloy and molded product of amorphous alloy

A process and an apparatus for producing metallic glass which are capable of producing a bulk amorphous alloy of desired shape, in particular, a bulk amorphous alloy of desired final shape are provided. In the present invention, the molten metal at a temperature above the melting point is selectively cooled at a rate higher than the critical cooling rate, and the product comprises single amorphous phase which is free from the crystalline phase formed by the development of crystal nuclei through nonuniform nucleation. The present invention is capable of producing the bulk amorphous alloy which is free from casting defects such as cold shuts and which has excellent strength properties in a simple process at a high reproducibility. Accordingly, a bulk metallic glass of desired shape is produced by filling a metal material in a hearth; melting the metal material by using a high-energy heat source which is capable of melting the metal material; pressing the molten metal at a temperature above the melting point of the metal material to deform the molten metal into the desired shape by at least one of compressive stress and shear stress at a temperature above the melting point, while avoiding the surfaces of the molten metal cooled to a temperature below the melting point of the metal material from meeting with each other during the pressing; and cooling the molten metal at a cooling rate higher than the critical cooling rate of the metal material simultaneously with or after the deformation to produce the bulk metallic glass of desired form.

Process and apparatus for producing metallic glass

The present invention provides a method for producing a composite hard magnetic material, wherein a composite powder&mdash;prepared by mixing; a composite hard magnetic material produced by consolidating a composite powder prepared by mixing an alloy powder having an amorphous phase containing a main component Co and at least Sm, and an alloy powder comprising an amorphous phase as a principal phase and containing at least Fe and/or Co, rare earth elements R and B; an alloy powder having an amorphous phase containing a main component Co and at least Sm; and an alloy powder having an amorphous phase containing at least Fe and/or Co, rare earth elements R and B&mdash;is consolidated by taking advantage of softening phenomenon caused by crystallization of the amorphous phase in the alloy powder comprising an amorphous phase as a principal phase.

Composite hard magnetic material and method for producing the same

A metal material is placed on a lower mold of a press metal mold which has an upper mold and the lower mold not having engagement portions. The metal material is fused by a high energy heat source, and obtained molten metal over a melting point is pressed with the press metal mold and transformed into a predetermined configuration. The molten metal is cooled at a rate over a critical cooling rate simultaneously with or after the transformation, and the molded product of amorphous metal in predetermined configuration is obtained.

Molded product of amorphous metal and manufacturing method for the same

A high permeability metal glassy alloy for high frequencies contains at least one element of Fe, Co, and Ni as a main component, at least one element of Zr, Nb, Ta, Hf, Mo, Ti, V, Cr, and W, and B. In the metal glassy alloy, the temperature interval &Dgr;Tx of a super cooled liquid region, which is represented by the equation &Dgr;Tx&equals;Tx&minus;Tg (wherein Tx represents the crystallization temperature, and Tg represents the glass transition temperature) is 20&deg; C. or more, and resistivity is 200 &mgr;&OHgr;&middot;cm or more.

High permeability metal glassy alloy for high frequencies

An aluminum-based alloy having the general formula Al,Q,M,(wherein Q is V, Mo, Fe, W, Nb, and/or Pd; M is Mn, Fe, Co, Ni, and/or Cu; and a and b, representing a composition ratio in atomic percentages, satisfy the relationships 1&lE;a&lE;8, 0<b<5, and 3&lE;a&plus;b&lE;8) having a metallographic structure comprising a quasi-crystalline phase, wherein the difference in the atomic radii between Q and M exceeds 0.01 &angst;, and said alloy does not contain rare earths, possesses high strength and high rigidity. The aluminum-based alloy is useful as a structural material for aircraft, vehicles and ships, and for engine parts; as material for sashes, roofing materials, and exterior materials for use in construction; or as materials for use in marine equipment, nuclear reactors, and the like.

High strength and high rigidity aluminum-based alloy and production method therefor

A magnetostrictive material is produced by annealing an alloy consisting essentially of an amorphous phase and comprising Fe, Dy, and Tb as primary components, at least one element selected from the group consisting of Ta, Nb, Zr, Hf, V, W, Mo, Si and B and/or at least one element selected from the group consisting of Cr, Al, Ga, Ge, Cu, Au, Ag, Pt, Pd, Os, Ir, and Rh.

Magnetostrictive material

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Aoba-ku, Sendai-shi, Miyagi-ken, Japan

Akihisa Inoue