Carbon composite materials comprising particles of metal carbides dispersed therein and method for producing the same

Inactive Publication Date: 2007-07-19
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0027] The carbon composite materials according to the present invention have properties such as a

Problems solved by technology

According to the method disclosed in JP Patent Publication (Kokai) No. 11-130537A (1999), powdery metal oxides are mixed with powdery carbon, and the dispersibility of the generated metal oxides is not sufficient.
Thus, the amount of ca

Method used

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  • Carbon composite materials comprising particles of metal carbides dispersed therein and method for producing the same
  • Carbon composite materials comprising particles of metal carbides dispersed therein and method for producing the same
  • Carbon composite materials comprising particles of metal carbides dispersed therein and method for producing the same

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examples

[0058] Starting materials of 1) silica particles with an average particle diameter of 3 μm and 2) liquid phenol resin were used. Silica particles were introduced into liquid phenol resin with a dispersant to adjust their concentrations to a C:Si ratio of at least 3:1, in terms of molar ratio. In this example, silica particles were mixed at a ratio of C:Si of 9:1, in terms of molar ratio.

[0059] A carbon sheet was impregnated with the aforementioned slurry, followed by molding via heating. After molding, the dispersion state of silica particles was observed under an electron microscope, and the photograph shown in FIG. 2 was obtained.

[0060] The molding product was subjected to carbonization in an inert gas atmosphere at 1000° C.

[0061] The carbon sheet was reimpregnated with phenol resin in a vacuum container, followed by recarbonization. Thereafter, the molding product was subjected to calcination in an inert gas atmosphere at 1650° C. The resulting test piece was observed under an...

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Abstract

This invention provides carbon composite materials, which comprise metal carbide particles, at least the particle surfaces or the entirety of which are metal carbides, synthesized in situ from a metal source, i.e., at least one member selected from the group comprising metal particles, metal oxide particles, and composite metal oxide particles, and a carbon source, i.e., a thermosetting resin, dispersed in a carbon, carbon fiber, or carbon/carbon fiber matrix, and contain no free metal particles. This invention also provides a method for producing such composite carbon materials, which enables the production of carbon composite materials having a high coefficient of friction, high thermostability, and abrasion resistance.

Description

TECHNICAL FIELD [0001] The present invention relates to carbon composite materials having a high coefficient of friction, high thermostability, and abrasion resistance. Also, the present invention relates to a method for producing such carbon composite materials. BACKGROUND ART [0002] Carbon materials are combined with carbon fibers to prepare composite materials. Such process is known to be effective in order to improve the performance of such materials. For example, carbon fiber / carbon composite materials comprising high-strength carbon fibers are known as CC composite materials. Such materials are superior in specific strength (i.e., strength / density) to conventional metal materials, and thus, the applications of such composite materials are being expanded in various fields. For example, such CC composite materials are used for brake pad materials of automobiles or aircraft. [0003] A variety of techniques for preparing reinforced carbon composite materials have been attempted via...

Claims

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Application Information

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IPC IPC(8): B32B9/00C01B31/02F16D65/12C04B35/52C04B35/565C04B35/634C04B35/83F16D69/00F16D69/02
CPCC04B35/565Y10T428/30C04B35/83C04B2235/3217C04B2235/3232C04B2235/3244C04B2235/3248C04B2235/3258C04B2235/3284C04B2235/3418C04B2235/3826C04B2235/3839C04B2235/48C04B2235/5436C04B2235/652C04B2235/80F16D69/023C04B35/63492C04B35/16C04B35/46C04B35/71
Inventor ICHIKAWA, SHIGERUKAMIYA, SUMIOYAMADA, KOJISASAKI, HIRONORI
Owner TOYOTA JIDOSHA KK
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