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Method for controlling characteristics of ceramic carbon composite, and ceramic carbon composite

A control method and carbon composite technology, applied in the direction of graphite, etc., can solve the problems of limited freedom of manufacturing process, control of properties of difficult composite materials, etc., and achieve the effect of easy control of properties

Inactive Publication Date: 2015-08-05
TOYO TANSO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to strongly bond carbonaceous materials and ceramic materials, the degree of freedom of the manufacturing process is limited, so it is difficult to adjust the manufacturing conditions as a conventional method for controlling the properties, and it is difficult to control the properties of the composite material.

Method used

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  • Method for controlling characteristics of ceramic carbon composite, and ceramic carbon composite
  • Method for controlling characteristics of ceramic carbon composite, and ceramic carbon composite
  • Method for controlling characteristics of ceramic carbon composite, and ceramic carbon composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Artificial graphite particles (manufactured by Toyo Tanso Co., Ltd., mesophase graphite, particle size distribution (d10-d90) 15-20 μm, degree of graphitization 67%) 10 g, aluminum nitride powder (particle size distribution (d10 ~d90) 1~5μm) 3.55g and Y as a sintering aid 2 o 3 (0.19g) were mixed, and the mixed powder was prepared by dissolving acrylamide (8g) and N,N'-methylenebisacrylamide (1g) in isopropanol (45g) by the gel casting method The binder solution (2.84 g) was mixed and the mixture was cast in plastic moulds. The volume ratio of carbonaceous material and ceramics in the mixture is 80:20. The obtained mixture was dried at 80° C. for 12 hours under normal pressure to obtain a molded body. Next, a pressure of 30 MPa was applied to the molded body by spark plasma sintering under vacuum, and pulse energization sintering was performed under vacuum conditions at 2000° C. for 5 minutes, thereby obtaining a ceramic carbon composite material A.

Embodiment 2

[0064] As the carbonaceous material, artificial graphite particles (manufactured by Toyo Tanso Co., Ltd., machining residue, particle size distribution (d10-d90) 2-100 μm, degree of graphitization 83%) were used, except that, the same operation as in Example 1 , to obtain ceramic carbon composite material B.

Embodiment 3

[0066] As the carbonaceous material, use artificial graphite particles (manufactured by Toyo Tanso Co., Ltd., graphite material pulverized powder, aspect ratio 3.5, graphitization degree 98%), except that, operate in the same manner as in Example 1 to obtain ceramic carbon composite material C .

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Abstract

Provided are: a method for controlling the characteristics of a ceramic carbon composite having a ceramic interfacial layer formed between carbonaceous material, and having a three-dimensional network structure in which the ceramic interfacial layer is unbroken between the carbonaceous material; and a ceramic carbon composite, the characteristics of which are controlled. The method for controlling the characteristics of the ceramic carbon composite (1) having the ceramic interfacial layer (3) formed between the carbonaceous material (2), and having the three-dimensional network structure in which the ceramic interfacial layer (3) is unbroken between the carbonaceous material (2), involves controlling the characteristics by identifying and selecting at least one of the shape, hardness and degree of graphitization of the carbonaceous material (2), enabling the ceramic carbon composite (1), the characteristics of which are controlled, to be obtained without relying on adjusting manufacturing conditions.

Description

technical field [0001] The present invention relates to a method for controlling properties of a ceramic-carbon composite material that is a composite material of graphite and ceramics, and to a ceramic-carbon composite material. Background technique [0002] Currently, carbon materials have a low specific gravity and are excellent in heat resistance, corrosion resistance, sliding properties, electrical conductivity, thermal conductivity, and processability, and are widely used in the fields of semiconductors, metallurgy, machinery, electricity, and atomic energy. [0003] However, carbon materials generally suffer from poor oxidation resistance and strength. In order to solve this problem, studies have been made on compositing with other materials such as ceramics. [0004] As an example of compounding carbon materials and ceramic materials, SiC-covered graphite composite materials obtained by covering SiC and TaC on graphite substrates by gas phase reaction or melting rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/52C04B35/80C04B35/83C01B31/04
CPCC04B2235/5296C04B2235/9607C04B2235/5463C04B2235/425C04B35/522C04B35/575C04B2235/3225C04B2235/77C04B2235/666C04B2235/5436C04B35/593C04B2235/5264C04B2235/5248C04B35/806C04B2235/96C04B2235/526C04B2235/3217C01B31/04C04B2235/3865C04B35/80C01B32/20
Inventor 宫本钦生陈卫武
Owner TOYO TANSO KK
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