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Composite carbon material having metal carbide particles dispersed therein and method for preparation thereof

A carbon composite material, metal carbide technology, applied in the direction of brake disc, thin material processing, mechanical equipment, etc., can solve the problem of impossible to prepare composite material, achieve high friction coefficient, high thermal stability, wear resistance light effect

Inactive Publication Date: 2007-04-11
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is practically impossible to prepare composite materials composed of carbon materials and fine particles of high-purity metal carbides

Method used

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  • Composite carbon material having metal carbide particles dispersed therein and method for preparation thereof
  • Composite carbon material having metal carbide particles dispersed therein and method for preparation thereof
  • Composite carbon material having metal carbide particles dispersed therein and method for preparation thereof

Examples

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Embodiment

[0064] 1) Silica particles with an average particle size of 3 μm and 2) liquid phenolic resin were used as starting materials. Silica particles are introduced into the liquid phenolic resin along with a dispersant to adjust its concentration to a C:Si ratio (molar ratio) of at least 3:1. In this example, silica particles were mixed at a C:Si molar ratio of 9:1.

[0065] The carbon plate is impregnated with the slurry described above and shaped by heating. After molding, the dispersion state of the silica particles was observed under an electron microscope, and an image as shown in FIG. 2 was obtained.

[0066] The shaped product was carbonized at 1000 °C in an inert atmosphere.

[0067] The carbon plates were impregnated again with phenolic resin in a vacuum vessel and then carbonized again. The shaped product was then calcined at 1650° C. in an inert atmosphere. The particle shape of the resulting test sample was observed under an electron microscope. At the same time, X...

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Abstract

A composite carbon material, characterized in that metal carbide particles having been formed in-situ by the use of one or more of metal particles, metal oxide particles and composite metal oxide particles as a metal source and a thermosetting resin as a carbon source, and comprising a metal carbide at least in the surface portion thereof or consisting of a metal carbide are dispersed in a carbon matrix, a carbon fiber matrix or a carbon / carbon fiber matrix, and it contains no free metal particles; and a method for preparing the above composite carbon material. The composite carbon material has a high friction coefficient, and also exhibits high heat resistance and wear resistance.

Description

technical field [0001] The invention relates to a carbon composite material with large friction coefficient, high thermal stability and wear resistance. The invention also relates to a method for preparing such a carbon composite material. Background technique [0002] Combining carbon materials with carbon fibers can produce composite materials. This method is known to be effective in improving the properties of carbon materials. For example, carbon fiber / carbon composites containing high-strength carbon fibers are known as CC composites. Such composite materials have excellent specific strength (ie, strength / density) compared with conventional metal materials, and thus are increasingly used in various fields. For example, such CC composites are used in vehicle and aircraft brake pads. [0003] Various techniques have been attempted to prepare reinforced carbon composites by dispersing second phase particles in the carbon material. Although the addition of dispersed pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83F16D65/12F16D69/02C04B35/52C04B35/565C04B35/634F16D69/00
CPCC04B35/63492C04B2235/3839C04B35/565C04B2235/3232C04B2235/3826C04B2235/48Y10T428/30C04B2235/3284C04B2235/652C04B2235/3217C04B2235/3258C04B2235/3418F16D69/023C04B2235/3244C04B2235/80C04B2235/5436C04B2235/3248C04B35/83C04B35/16C04B35/46C04B35/71
Inventor 市川繁神谷纯生山田幸治屉木宏格
Owner TOYOTA JIDOSHA KK
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