Sumitomo Electric Industries, Limited

Other

National Aerospace Laboratories of Science & Technology Agency

Japan As Represented by Director General Agency of Industrial Science

Shigeki Ochi

Nobuhito Kuroishi

Yoshihiko Doi

Yoshinobu Takeda

Masayuki Niino

Akio Suzuki

Ryuzo Watanabe

Yoshimichi Masuda

Nobuyuki Yatsuyanagi

Masaki Sasaki

Junjiro Takekawa

Akinaga Kumakawa

Noboru Uenishi

Hiromi Gomi

Hiroshi Sakamoto

Hiroshi Tamura

Tosio Fujiwara

Fumiei Ono

An abrasion-resistant aluminum alloy consists of 13.0 to 16.0 percent by weight of Si, 4.0 to 5.0 percent by weight of Cu, at least 0.8 and less than 1.4 percent by weight of Mg, not more than 0.8 percent by weight of Fe, not more than 0.1 percent by weight of either P or at least one of Na, Sb and Sr and a remainder of Al and unavoidable impurities. The alloy's microstructure contains coarse Si particles of 15 to 40 .mu.m mean particle diameter, fine Si particles of not more than 5 .mu.m mean particle diameter and other fine particles, with a homogeneous dispersion of all of these particles. This abrasion-resistant aluminum alloy has specific abrasion loss of not more than 10.times.10.sup.-7 mm.sup.2 /kg.

Abrasion-resistant aluminum alloy and method of preparing the same

Manufacturing method of super-heat-resisting alloy material

A method of producing rocket combustors wherein in forming an outer cylin by a powder metallurgical method on the outer side of a cylinder provided on its outer periphery with a cooling wall of channel construction having a plurality of grooves, a low-melting alloy is used as a filler to be filled into the grooves. It is also possible to form the outer cylinder after forming a Cu plating shell on the periphery of the inner cylinder filled with the low-melting alloy.

Method of producing rocket combustors

A method of producing rocket combustors wherein in forming an outer cylin by a powder metallurgical method on the outer side of a cylinder provided on its outer periphery with a cooling wall of channel construction having a plurality of grooves (14), an Ni electroforming layer is formed on the outer side of the outer cylinder, and also a method of producing rocket combustors wherein an outer cylinder is of multilayer construction having two or more layers.

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Itami, Japan

Shigeki Ochi