Toyota Jidosha Kabushiki Kaisha

Toyo Aluminum Kabushiki Kaisha

Toyo Aluminium Kabushiki Kaisha

Sumitomo Electric Industries, Limited

Nippon Light Metal Company, Ltd.

Toyo Aluminum K.k.

Akiei Tanaka

Jun Kusui

Hirohisa Miura

Yasuhiro Yamada

Hirohumi Michioka

Kunihiko Imahashi

Takamasa Yokote

Takashi Watsuji

Kohei Kubo

Tetsuya Hayashi

Akira Kato

Yoshinobu Takeda

Toshihiko Kaji

Kiyoaki Akechi

Fumiaki Nagase

Yusuke Odani

Yuji Suzuki

Hirofumi Michioka

Masahiko Kawai

Kazumi Tono

Yasuo Ishiwata

Kazuya Higashimura

Katsuya Moriguchi

Provided are a method and an apparatus for melting an aluminum powder, which are capable of melting the aluminum powder with a high yield and allow the melted aluminum to be reused for a variety of applications. The method for melting the aluminum powder includes the steps of: preparing a mixture (M) including an aluminum powder (A) and a fluoride-based flux (F) by previously mixing the aluminum powder (A) and the fluoride-based flux (F); and melting the mixture (M) in molten aluminum (L).

Method and apparatus for melting aluminum powder

A high heat resisting and high abrasion resisting aluminum alloy and aluminum alloy powder have superior toughness, abrasion resistance, high temperature strength, and creep resistance and are useful to form engine parts for automobiles, airplanes, etc. The high heat resisting and high abrasion resisting aluminum alloy comprises 2 to 15 wt % of Ni, 0.2 to 15 wt % of Si, 0.6 to 8.0 wt % of Fe, one or two of 0.6 to 5.0 wt % of Cu and 0.5 to 3 wt % of Mg, the total amount of Cu and Mg being equal to or less than 6 wt %, one or two of 0.3 to 3 wt % of Zr and 0.3 to 3 wt % of Mo, the total amount of Zr and Mo being equal to or less than 4 wt %, 0.05 to 10 wt % of B, and the balance of Al and unavoidable impurities, and is produced by powder metallurgy.

High heat resisting and high abrasion resisting aluminum alloy

An aluminum alloy powder for sliding members includes Fe in an amount of from 0.5 to 5.0% by weight, Cu in an amount of from 0.6 to 5.0% by weight, B in an amount of from 0.1 to 2.0% by weight and the balance of Al. An aluminum alloy includes a matrix made from the aluminum alloy powder and at least one member dispersed, with respect to whole of the matrix taken 100% by weight, in the matrix, and selected from the group consisting of B in an amount of from 0.1 to 5.0% by weight, boride in an amount of from 1.0 to 15% by weight and iron compound in an amount of from 1.0 to 15% by weight, and thereby it exhibits the tensile strength of 400 MPa or more. The aluminum alloy powder and the aluminum alloy are suitable for making sliding members like valve lifters for automobiles.

Aluminum alloy powder for sliding members and aluminum alloy therefor

Disclosed are heat resistant aluminum alloy powder and alloy including Ni in an amount of from 5.7 to 20% by weight, Si in an amount of from 6.0 to 25% by weight, at least one of Fe in an amount of from 0.6 to 8.0% by weight and Cu in an amount of from 0.6 to 5.0% by weight, and at least one of B in a form of the simple substance in an amount of from 0.05 to 2.0% by weight (or from 0.05 to 10% by weight for the alloy) and graphite particles (especially for the alloy) in an amount of from 0.1 to 10% by weight. The alloy powder and alloy are not only superb in the tensile strength at room temperature and high temperatures but also superior in the sliding characteristic, they can be further upgraded in the wear resistance and the fretting fatigue resistance by dispersing at least one of nitride particles, boride particles, oxide particles and carbide particles in an amount of from 0.5 to 10% by weight with respect to the whole composite material including the matrix taken as 100% by weight in the matrix, thereby resulting in a heat and wear resistant aluminum alloy-based composite materials. The alloy powder, alloy and composite material are satisfactorily applicable to the component parts of the recent automobile engines which should be light-weight and produce a high output.

Heat resistant aluminum alloy powder heat resistant aluminum alloy and

Disclosed herein is an aluminum matrix composite powder comprising 1 to 40% by weight of ceramic particles dispersed in a matrix of aluminum-silicon alloy. The matrix of the composite may further comprise at least one of Cu, Mg and transition metals. The aluminum matrix composite is prepared by a rapid solidification. In the aluminum matrix composite, the ceramic particles are very uniformly dispersed in the matrix, thereby the improvement of mechanical properties of product prepared therefrom can be obtained.

Aluminum matrix composite powder

An aluminum alloy consists essentially of 90 to 99.5% by weight of matrix and 0.5 to 10% by weight of a dispersant dispersed within the matrix. The matrix comprises 10 to 25% by weight of Si, 5 to 20% by weight of Ni, 1 to 5% by weight of Cu and the rest of Al and impurity elements. The dispersant is at least one selected from the group consisting of 0.5 to 10% of nitride, boride, carbide and oxide. The aluminum alloy shows excellent tensile strength and wear resistance.

Aluminum alloy

A hypereutectic aluminum-silicon alloy produced by a powder metallurgy technique disclosed herein comprises 12 to 50% by weight of silicon, 1.0 to 5.0% by weight of copper and 0.01 to 0.05% by weight of phosphorus, the content of Ca as an impurity being controlled to be 0.03% by weight or less. The hyereutectic aluminum-silicon alloy of the present invention is excellent in machinability and mechanical strength.

Hypereutectic aluminum-silicon alloys produced by powder metallurgy

Disclosed are heat resistant aluminum alloy powders and alloys including Ni, Si, either at least one of Fe and Zr or at least one of Zr and Ti. For instance, the alloy powders or alloys consist essentially of Ni in an amount of from 5.7 to 20% by weight, Si in an amount of from 0.2 to 25% by weight, at least one of Fe in an amount of from 0.6 to 8.0% by weight and Cu in an amount of from 0.6 to 5.0% by weight, and the balance of Al. The alloy powders or alloys are optimum for a matrix of heat and wear resistant aluminum alloy-based composite materials including at least one of nitride particles and boride particles in an amount of 0. 5 to 10% by weight with respect to the whole composite material taken as 100% by weight. The alloy powders, alloys and composite materials are satisfactory applicable to the component parts of the recent automobile engines which should produce a high output.

Heat resistant aluminum alloy powder, heat resistant aluminum alloy and

Hyper-eutectic aluminum-silicon alloy powder and method of preparing the

Aluminum composite material

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Ohmihachiman, Japan

Akiei Tanaka