Hitachi, Ltd.

Other

Hitachi Chemical Company, Ltd.

Hitachi Cable, Inc.

Hiatchi, Ltd.

Yasuhisa Aono

Junya Kaneda

Kazutaka Okamoto

Takahiko Kato

Yasuo Kondo

Hideyo Kodama

Hisanori Okamura

Teruyoshi Abe

Satoshi Hirano

Ryuichi Saito

Kinya Aota

Masahisa Inagaki

Akira Yoshinari

Yoshihiko Koike

Yasushi Muranaka

Seiji Takeuchi

Shigeo Hattori

Masakiyo Izumiya

Ryo Ishibashi

Noriyuki Watanabe

Tetsuya Nagata

Shuichi Suzuki

Yuichi Satsu

Tomoichi Kamo

Tadashi Fujieda

Tomonori Kimura

Kishio Hidaka

Masahiko Arai

Mitsuo Hayashibara

Makoto Ogata

Yoshiyuki Takamori

Chahn Lee

Tomio Odakura

Masafumi Noujima

Shinzo Ikeda

Masayuki Doi

Kouichi Takei

Sai Ogawa

Shinzou Ikeda

Shinichi Hasshuu

Tatsuo Horiba

Katsuhiro Komuro

Fumio Jyoraku

Isao Masaoka

Fumio Iida

Toshimi Matsumoto

Toshiaki Arato

Akihiko Saito

Kiyomi Nakamura

Hisao Suka

Kiyotomo Nakata

Naoya Okizaki

Masami Taguchi

Takahiro Yamaki

Yusaku Maruno

Hisashi Sato

Takeshi Obana

Naoya Tokoo

Shigeo Tsuruoka

Michiyoshi Yamamoto

Shinzoo Ikeda

Heishichiro Takahashi

Jun'ya Kaneda

Manabu Kagawa

Masakuni Fujikura

Toshinori Dozono

Shigeki Ono

Hidehiko Sumitomo

Hiroki Masumoto

There is provided a Cr-based two-phase alloy including two phases of a ferrite phase and an austenite phase that are mixed with each other. A chemical composition of the Cr-based two-phase alloy consists of a main component, an auxiliary component, impurities, a first optional auxiliary component, and a second optional auxiliary component. The main component consists of 33-61 mass % Cr, 18-40 mass % Ni and 10-33 mass % Fe, and a total content of the Ni and the Fe is 37-65 mass %. The auxiliary component consists of 0.1-2 mass % Mn, 0.1-1 mass % Si, 0.005-0.05 mass % Al, and 0.02-0.3 mass % Sn. The impurities include 0.04 mass % or less of P, 0.01 mass % or less of S, 0.03 mass % or less of C, 0.04 mass % or less of N, and 0.05 mass % or less of O.

Chromium-based two-phase alloy and product using said two-phase alloy

An object of the invention is to provide: a two-phase alloy as a metal material that can be preferably utilized under circumstances of a temperature range and a high corrosion as in an oil well, the two-phase alloy having a high corrosion resistance and good mechanical properties that are equivalent or more than those of conventional ones, and saving a cost; a product of the two-phase alloy; and a method for producing the product. There is provided a two-phase alloy containing Cr as a major component and including two phases of an austenite phase and a ferrite phase in a mixed state. The alloy has a chemical composition containing: 34-70 mass % of Cr; 17-45 mass % of Ni; 10-35 mass % of Fe; 0.1-2 mass % of Mn; 0.1-1 mass % of Si; and impurities. The total content of the Ni and the Fe is 30-65 mass %.

Two-phase alloy, product using said two-phase alloy, and method for producing said product

The present invention is a cooling plate including a groove, which becomes a passage of a coolant, inside a body, wherein one or more fins are provided inside the groove, wherein the groove is covered with a lid having width larger than the groove, wherein the lid is joined to the body by friction stir welding, and wherein a weld bead formed by: the joining is outside the passage, and the weld bead formed by the joining is formed within the body and further, is characterized by a manufacturing method of a cooling plate that has a first groove, which becomes a passage of a coolant, and a second groove, which has width larger than the first groove and receives a lid on the first groove, inside a body, receives the lid on the second groove, and is joined to the body, the manufacturing method of a cooling plate wherein, while the lid and the body are joined together by the friction stir welding owing to insertion of a-rotation tool having a shoulder and a pin, the joining is performed so that a weld bead formed by the joining may become out of the passage, and furthermore, is characterized in that a target for sputtering is joined to the cooling plate.

Cooling plate and manufacturing method thereof, and sputtering target and manufacturing method thereof

A lithium secondary battery, which comprises a positive electrode, a negative electrode containing a lithium ion-storable/dischargeable negative electrode-active material and a lithium ion conductive, non-aqueous electrolytic solution or polymer electrolyte can have distinguished charging/discharging characteristics and a higher safety, when the negative electrode material contains particles comprising carbonaceous materials and at least one of elements capable of forming a compound with Li; the elements have a melting point of at least 900&#xb0; C. and a thermal expansion coefficient of not more than 9 ppm/K at room temperature; the particles are embedded in a plurality of layers of the carbonaceous materials; the particles being subjected to a mechanical treatment to make particle sizes of the particles smaller than the initial particle size in advance.

Lithium secondary battery, and process for producing the same

An electromagnetic wave absorber for use in the high frequency range above 1 Ghz and a composite member are characterized by the fact that magnetic metal grains are covered with ceramic above 20 volume %. Further, a method of manufacturing the electromagnetic absorber and the composite member is characterized by the fact that composite magnetic particles, in which a plurality of magnetic metal grains and ceramic are unified, are formed through a mechanical alloying method applied to a composite powder composed of magnetic metal powder and ceramic powder. The electromagnetic wave absorber can be used in a semiconductor device, an optical sending module, an optical receiving module, an optical sending and receiving module, an automatic tollgate in which erroneous operation due to electromagnetic wave disturbance is provided by use of the electromagnetic wave absorber.

Electromagnetic wave absorber, method of manufacturing the same and appliance using the same

A catalytic material and electrode of the present invention are characterized in that the catalyst carrier constituting the above-mentioned catalytic material and electrode includes at least one member selected from the group consisting of nitrogen atoms, oxygen atoms, phosphor atoms, and sulfur atoms. Since the cohesion or growth of catalyst grains can hereby be suppressed, it is possible to provide a highly active catalyst, a high-performance electrode, and a high-output-density fuel cell which uses the same.

Covalently bonded catalyst carrier and catalytic component

Catalytic material, electrode, and fuel cell using the same

Different metallic materials are joined in such a manner that friction heat generated by friction between a rotating probe made of a hard material and one of the metallic materials having a lower mechanical strength or a lower melting point than the other to effect plastic flow of the one material and the probe is inserted into a pit formed in a joint zone of the other material to fill the pit with the plastic flow material.

Method of joining metallic materials

A high-strength and high-toughness ferritic steel having a tensile strength of not less than 1,000 MPA and a Charpy impact value of not less than 1 MJ/m is provided. A ferritic steel comprising, by weight, not more than 1% Si, not more than 1.25% Mn, 8 to 30% Cr, not more than 0.2% C, not more than 0.2% N, not more than 0.4% O, a total amount of not more than 12% of at least one compound-forming element selected from the group of Ti, Zr, Hf, V and Nb in amounts of not more than 3% Ti, not more than 6% Zr, not more than 10% Hf, not more than 1.0% V and not more than 2.0% Nb, also containing where necessary not more than 0.3% Mo, not more than 4% W and not more than 1.6% Ni, and the balance consisting of Fe and unavoidable impurities, and having an average crystal grain size of not more than 1 &mgr;m, can be obtained by a method comprising encapsulating a steel powder produced by mechanical alloying, and subjecting the encapsulated steel powder to plastic deformation.

High-toughness and high-strength ferritic steel and method of producing the same

A corrosion resistant, high strength austenitic stainless steel consisting of 1.0% or less of Si, 2.0% or less of Mn, 0.5% or less of O, 7 to 30% of Ni, 14 to 26% of Cr, 0.3% or less of combination of C and N, at least one element selected from the group consisting of 1.0% or less of Ti, 2.0% or less of Zr and 2.0% or less of Nb, and the balance consisting of Fe and unavoidable impurities, the percentage being given in weight basis; said steel containing carbonitride with a grain size of several to 100 nm dispersed therein; said steel having an average crystal grain size of 1 &mgr;m or less; and said steel containing 90% by volume or more of austenite phase; is excellent in strength and corrosion resistance.

Corrosion resistant, high strength alloy and a method for manufacturing the same

Friction stir welding method and apparatus, and welded structure

Composite material, and manufacturing method and uses of same

A lithium secondary battery comprising a positive electrode, a negative electrode containing a lithium ion-storable/dischargeable negative electrode-active material and a lithium ion conductive, non-aqueous electrolytic solution or polymer electrolyte, characterized in that the negative electrode-active material comprises particles of carbonaceous material and particles of metal and metal oxide capable of enhancing lithium ion interstitial diffusibility/releasability as embedded in the particles of carbonaceous material, particles of carbonaceous materials and lithium ion interstitially diffusible/releasable particles being prepared by carbonization of a mixture thereof with MA or carbon precursor, has a high capacity and a long cycle life, and can be used in various electric appliances.

Lithium secondary battery having oxide particles embedded in particles of carbonaceous material as a negative electrode-active material

Growing community of inventors

Hitachi, Japan

Yasuhisa Aono