Kabushiki Kaisha Toyota Chuo Kenkyusho

Toyota Jidosha Kabushiki Kaisha

Aichi Steel Works, Ltd.

Kazuo Higuchi

Shoji Noda

Masao Kohzaki

Kiyoshi Uchida

Yoshinobu Honkura

Yoshiaki Fukushima

Shinji Inagaki

Osami Kamigaito

Hiroaki Hayashi

Hiroaki Wakayama

Narihito Tatsuda

Kenichirou Suzuki

Yoshitsugu Kojima

Yasutomo Goto

Norihiko Setoyama

Akio Itoh

Megumi Sasaki

Shun-ichi Murasaki

Mikio Niimi

A coated material comprising a substrate which has micropores and a reaction product coated thereon along the surface configuration of the substrate and an inner wall of the micropores thereof. The coated material is preferably produced by performing a supercritical coating step wherein a reaction precursor is dissolved in a supercritical fluid to form a precursor fluid and then the precursor fluid is brought into contact with a substrate in the presence with a reaction initiator to allow a reaction between the reaction precursor and the reaction initiator, thereby coating a reaction product onto the substrate.

Coated object and process for producing the same

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 sliding member which ensures a low coefficient of friction and a high degree of wear resistance, and is suitable for use in a bearing, mechanical seal, etc. It comprises a ceramic or metallic base, a diamond film formed on a surface of the base and having a rugged surface defining concavities, and a soft metal filling those concavities. When a relative sliding motion is made between it and a mating part formed from a hard material, only a low coefficient of friction occurs and the abrasive wear of the mating part is greatly reduced. It can maintain its high wear resistance for a long time even when it is used in a dry mode not involving the use of any lubricating oil, coolant, etc., since the diamond film does not undergo any change under heat to graphite having a lower degree of hardness.

Sliding member

A sliding electric part includes a set of two sliding members, wherein one of the sliding members is composed of a diamond substrate with an electric conductive portion formed by ion implanation or by the deposition of boron-doped p-type diamond on the sliding surface which slides along the other sliding member, and the other sliding member has an electric conductive portion formed on the sliding surface which slides along the one sliding member.

Sliding electric parts

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

Seto, Japan

Kazuo Higuchi