Toyota Jidosha Kabushiki Kaisha

Joji Miyake

Noritaka Miyamoto

Yoshio Fuwa

Tetsuo Nagami

Tadashi Donomoto

Mototsugu Koyama

Miyuki Koujiya

Hidetoshi Ohsawa

Takashi Iomoda

A sprayed member which has a ceramic-sprayed layer formed on the surface of a parent material of an aluminum alloy through a sprayed bond layer. A diffusion layer occupies 20 to 50% of the entire interface between the bond layer and the parent material. The interface between the diffusion layer and the parent material and the interface between the bond layer and the parent material are finely roughened to have a height of several microns. The diffusion layer and the fine roughness are formed by preheating the surface of the parent material at a temperature ranging from 260.degree. to 500.degree. C. prior to spraying the parent material with a material for the bond layer so that they can together enhance the adherency between the bond layer and the parent material.

Ceramic-sprayed member and process for making the same

A fiber reinforced metal type composite material. The reinforcing fiber is alumina fiber formed from at least 80% by weight alumina and the remainder silica, with the alpha alumina content of the alumina approximately between about 5% and about 60% by weight of the total amount of alumina. The matrix metal is selected from the group consisting of aluminum, magnesium, and their alloys. Thereby mechanical strength, resistance to wear, and workability of the fiber reinforced metal type composite material are good, and also friction wear on elements which frictionally rub against and mate with components made of the fiber reinforced metal type composite material is low.

Composite material including alpha alumina fibers

Growing community of inventors

Okazaki, Japan

Joji Miyake