Kabushiki Kaisha Toyota Chuo Kenkyusho

Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Jidoshokki

Takashi Iseki

Kazuyuki Nakanishi

Hideo Tachikawa

Yuka Yamada

Hiroyuki Mori

Yasuhiro Ozawa

Fumio Shimizu

Tadashi Oshima

Masafumi Koizumi

Ken-ichi Suzuki

Naoki Ueda

Munehisa Matsui

Hideo Hasegawa

Takayuki Kato

Takayuki Kikuchi

Hajime Hasegawa

Takahiro Sugioka

Hitotoshi Murase

Seiji Mizuno

Shingo Ohta

Mamoru Tohyama

Takao Kobayashi

Toshio Horie

Atsushi Saito

Toshihide Ohmori

Yoshio Shimura

Hiroshi Moritani

Katsumi Sato

Gaku Kitahara

Kuroudo Maeda

Hirohiko Hisano

Shuichi Yasuda

Shintaro Igarashi

Shigeru Hotta

Masahiro Suzuki

Yoshiyuki Funaki

Yoshinari Tsuchiya

Kyouji Kondo

Katsutoshi Fujisawa

Ken-Ichi Suzuki

An amorphous carbon film contains carbon as a main component, not more than 30 at. % of hydrogen, not more than 20 at. % of nitrogen and not more than 3 at. % of oxygen (all excluding 0 at. %), and when the total amount of the carbon is taken as 100 at. %, the amount of carbon having an sphybrid orbital is not less than 70 at. % and less than 100 at. %. Nitrogen and oxygen are concentrated on a surface side of the film and when detected from a surface layer by X-ray photoelectron spectroscopy, oxygen content ratio is not less than 4 at. % and not more than 15 at. % and nitrogen content ratio is not less than 10 at. % and not more than 30 at. %.

Amorphous carbon film, process for forming amorphous carbon film, electrically conductive member and fuel cell bipolar plate having amorphous carbon film

The oriented amorphous carbon film contains C as a main component, 3 to 20 at. % of N, and more than 0 at. % and not more than 20 at. % of H, and when the total amount of the C is taken as 100 at. %, the amount of C having an sphybrid orbital (Csp) being not less than 70 at. % and less than 100 at. %, and (002) planes of graphite being oriented along a thickness direction. This film has a novel structure and exhibits a high electric conductivity. This film can be formed by DC plasma CVD method in which an electric discharge is generated by applying a voltage of not less than 1500 V to reaction gas including at least one kind of compound gas selected from gas of a carbocyclic compound containing Cspand gas of an N-containing heterocyclic compound containing Csp, and nitrogen and/or silicon, and nitrogen gas.

Oriented amorphous carbon film and process for forming the same

A bipolar plate for a fuel cell comprises a substrate formed of stainless steel; an oriented amorphous carbon film formed at least on a surface of the substrate facing an electrode, and containing C as a main component, 3 to 20 at. % of N, and more than 0 at. % and not more than 20 at. % of H, and when the total amount of the C is taken as 100 at. %, the amount of C having an sphybrid orbital (Csp) being not less than 70 at. % and less than 100 at. %, and (002) planes of graphite being oriented along a thickness direction; a mixed layer generated in an interface between the substrate and the oriented amorphous carbon film and containing at least one kind of constituent atoms of each of the substrate and the oriented amorphous carbon film; and a plurality of projections protruding from the mixed layer into the oriented amorphous carbon film and having a mean length of 10 to 150 nm.

Bipolar plate for fuel cell and method for producing the same

This invention adopts plasma-enhanced chemical vapor deposition using the apparatus including a chamber, a pair of rotary electrode reels including a feed-out reel and a take-up reel, a plasma source, a material gas supplier, and an exhaust unit, and includes applying a negative voltage applied to the rotary electrode reels from the plasma source while a conductive substrate is fed-out from the feed-out reel and is wound on the take-up reel so that the entire surface of the substrate portion between reels contacts the material gas, whereby plasma sheath is formed along the surface of the substrate portion between reels, and the material gas is activated in the plasma sheath and thus contacts the surface of the substrate, thus forming the film on the surface of the substrate.

Method and apparatus for forming film

A method of manufacturing a titanium-based material includes: rolling a titanium base material via rolling oil that includes carbon to form a rolling-altered layer that includes titanium carbide on a surface of the base material; and depositing a carbon film on the surface on which the rolling-altered layer has been formed.

Titanium-based material, method of manufacturing titanium-based material, and fuel cell separator

The amorphous carbon film of the present invention is an amorphous carbon film comprising carbon and hydrogen, wherein the amorphous carbon film contains not more than 30 atomic % (excluding 0%) of hydrogen and, when the entire amount of the carbon is taken as 100 atomic %, carbon having an sphybrid orbital is present in an amount of not less than 70 atomic % and less than 100 atomic %. Conductivity is imparted to an amorphous carbon film by controlling the contents of hydrogen, Cspand the like to increase a structure comprising Csp. This amorphous carbon film can be formed by plasma CVD using a reaction gas containing one or more gases selected from a carbocyclic compound gas containing carbon having an sphybrid orbital, and a heterocyclic compound gas containing carbon having an sphybrid orbital and silicon and/or nitrogen. By forming the amorphous carbon film on a surface of a substrate, a conductive member can be obtained.

Amorphous carbon film, process for forming amorphous carbon film, conductive member provided with amorphous carbon film, and fuel cell separator

A coating film removal method for a coated member having a coating film formed over the surface of a substrate is disclosed, which can easily achieve a coating film removal, even for a carbon-based coating film containing carbon as a main component, besides a carbon-based coating film containing a metal element etc. A coated member regeneration method is also disclosed, which removes a coating film from a coated member, and then forms a new coating film over the member, to regenerate the coated member. The coating film removal method is adapted to remove a carbon-based coating film from a coated member () including a substrate, and the carbon-based coating film coated on at least a portion of a surface of the substrate while containing carbon as a main component. The coating film removal method includes bringing a molten salt having an oxidizing function for carbon into contact with the carbon-based coating film, to remove at least a portion of the carbon-based coating film coated over the surface of the substrate. A coated member regeneration method includes removing the carbon-based coating film from the coated member, using such coating film removal method, and subsequently forming a coating film on at least a portion of a surface of the film-removed member ().

Method for removing amorphous carbon coatings with oxidizing molten salts and coated member regeneration method

An amorphous carbon film includes carbon as a major component, and silicon in an amount of from 0.1 atomic % or more to 10 atomic % or less when the entire amorphous carbon film is taken as 100 atomic %. The carbon is composed of carbon having an sphybrid orbital in an amount of from 60 atomic % or more to 90 atomic % or less when the entire carbon amount is taken as 100 atomic %. Also disclosed is a process for producing the amorphous carbon film.

Amorphous carbon film, process for forming the same, and high wear-resistant sliding member with amorphous carbon film provided

To provide a sliding member that exhibits excellent durability and is free of lead. A swash plate for a compressor as the sliding member of the invention contains a base material having on the surface thereof a sliding layer constituting at least a sliding surface, on which shoes slide. The sliding layer contains a first layer that contains an amorphous hard carbon (diamond-like carbon) film containing Si (DLC-Si film) and is formed on the base material, and a second layer that is formed on the first layer and contains polyamideimide (PAI) containing a solid lubricant such as MoS.

Sliding member

To provide a soft amorphous carbon exhibiting a low elastic modulus, an amorphous-carbon coated member provided with a coated film comprising the amorphous carbon, and a process for forming an amorphous carbon film. The amorphous carbon comprises carbon as a major component and hydrogen in an amount of from more than 30 atomic % to 60 atomic % or less, and exhibits an elastic modulus of from 40 or more to 150 GPa or less. Moreover, the amorphous-carbon coated member comprises a conductive substrate, and a coated film fixed on at least a part of a surface of the substrate and composed of the amorphous carbon. In addition, in a process for forming the amorphous-carbon coated film, an amorphous carbon film is formed on a surface of conductive substrates by a plasma CVD method. Not only a plurality of the substrates are disposed on a substrate holder, which is disposed in a film-forming furnace and is connected with a negative electrode, in such a state that they face to each other, but also a processing gas pressure and a plasma power source are operated so as to overlap negative glows of the neighboring two substrates.

Amorphous carbon, amorphous-carbon coated member, and process for forming amorphous carbon film

A low-friction sliding member is used under a wet condition employing a lubricant, and includes a substrate having a surface, and an amorphous hard carbon film formed on the surface of the substrate for contacting slidably with a mating member. The amorphous hard carbon film includes silicon in an amount of from 1 atomic % or more to 20 atomic % or less, hydrogen in an amount of from 20 atomic % or more to 50 atomic % or less, and the balance of carbon and inevitable impurities, when the entirety is taken as 100 atomic %, and exhibits a surface roughness Rzof 0.8 &#x3bc;m or less. The low-friction sliding member exhibits reduced friction coefficients between itself and mating members, without relying on the adsorption and reaction of additives, included in lubricants, to the amorphous hard carbon films.

Low-friction sliding member

Growing community of inventors

Aichi-gun, Japan

Takashi Iseki