Kabushiki Kaisha Toyota Chuo Kenkyusho

Sumitomo Electric Industries, Limited

Japan Fine Ceramics Center

Toyota Jidosha Kabushiki Kaisha

Aichi Steel Works, Ltd.

Kiyoshi Uchida

Shoji Noda

Hirohiko Nakata

Masaya Miyake

Hiroshi Nomura

Kazuo Higuchi

Yukio Shimokawa

Yoshinobu Honkura

Shinji Kojima

Katsuyuki Ohsawa

Akio Itoh

Shun-ichi Murasaki

Motohide Murayam

Mikio Niimi

A thin film layered member having high heat dissipation efficiency is composed of at least two diamond layers and at least one interlayer. The diamond layers and the interlayer ape alternately laminated and the diamond layers form outer surfaces of the thin film layered member. When this member is applied to a heatsink or the like, thermal stress to an element mounted thereon can be reduced because of a laminated structure comprising an interlayer having a high coefficient of thermal expansion and diamond layers having a low coefficient of thermal expansion. Further, the interlayer includes a carbide forming metal, which reacts with carbon atoms constituting a diamond in a laminating process and to form a carbide at an interface between the interlayer and the diamond layer, thereby realizing strong bonding therebetween.

Thin film layered member

A ceramics composite material containing crystallized glass as the matrix and fibers or whiskers of ceramics as a reinforcement material, is obtained by melting original glass to form crystallized glass, compounding the same with fibers or whiskers of oxide ceramics and thereafter crystallizing the original glass. This ceramics composite material does not form any voids and can easily contain at least 50 volume percent of the reinforcement material, whereby a good mechanical strength and fracture toughness are achieved. In the compounding step, the content of the reinforcement can be further increased by forcing out any excess part of the original glass from the reinforcement material by applying pressure to a substance obtained by mixing the original glass with the reinforcement. Further, the ceramics composite material can be efficiently formed into a desired configuration by heating because the original glass flows viscously.

Ceramics composite material and method of producing the same

When a mixture of gases containing carbon is burned to form a film of diamond on a surface of a substrate held at an appropriate temperature, it is so burned as to form a substantially flat region of incomplete combustion lying in parallel to the substrate surface and contacting it, while the region is surrounded by an air-shielding gas stream or formed under a reduced pressure.

Combustion flame method for forming diamond films

Ceramics composite material

A process for synthesizing diamond includes bringing a reactant gas is brought into contact with a porous heating element to form an activated gas, and bringing the activated gas into contact with a substrate to deposit diamond thereon. An apparatus for synthesizing diamond includes a heating means member including a porous heating element, a substrate, and a diamond depositing member. The reactant gas is heated and activated uniformly to a high temperature appropriate for synthesizing diamond by bringing the reactant gas into contact with the porous heating element, whereby a high quality polycrystalline diamond film can be deposited over a wider area on the surface of the substrate.

Process for synthesizing diamond and apparatus therefor

Growing community of inventors

Aichi, Japan

Kiyoshi Uchida