Ceramic-based composite material as well as preparation method and application thereof

A composite material and ceramic-based technology, applied in the field of low residual Si composite material and its preparation, can solve the problems of limitation, poor interface bonding performance, low connection strength, etc., and achieve improved reaction activity, uniform spatial distribution, and carbon-silicon reaction. thorough effect

Active Publication Date: 2021-01-26
中京吉泰(北京)科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carbon fiber surface of the material prepared in this patent document has no matrix carbon, but uses SiC and ZrC to directly protect the carbon fiber, and the interfacial bonding performance between the carbon fiber and SiC and ZrC components is poor
Moreover, this method of reacting and preparing TiC crystals is similar to LSI-SiC. The connection interface with CVD-C is not good, the connection strength is low, resulting in large wear, and the TiC phase distribution generated by the reaction is concentrated, which is unfavorable to the stability of friction performance and residual porosity. Most of them are Cu metal single substance, which is used in aerospace structural parts, and there will be a problem of limited high temperature resistance

Method used

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  • Ceramic-based composite material as well as preparation method and application thereof
  • Ceramic-based composite material as well as preparation method and application thereof
  • Ceramic-based composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A ceramic matrix composite material of the present invention, comprising the following components in mass fraction:

[0039] Carbon Fiber: 22.7%,

[0040] CVD-C: 28.8%,

[0041] CVD-SiC: 13.0%,

[0042] PIP-SiC: 17.8%,

[0043] GSI-SiC: 7.9%,

[0044] TiC: 7.4%, and

[0045] Residual Si: 2.4%.

[0046] A preparation method of the ceramic matrix composite material of this embodiment, comprising the following steps:

[0047] (1) Deposit C layer: use carbon fiber to make a single layer of 0° non-weft cloth, 90° non-weft cloth and tire net, in order of 0° no weft cloth-tire net-90° no weft cloth-tire net Circular superimposition for laying, and then stitching by needle punching, introducing carbon fiber bundles perpendicular to the laying direction to obtain a three-dimensional needle punched carbon fiber preform with a density of 0.53g / cm 3 . The three-dimensional needle-punched carbon fiber preform was deposited and densified by chemical vapor deposition. The carb...

Embodiment 2

[0059] A kind of ceramic matrix composite material of the present invention, the mass percent of material constituent is as follows:

[0060] Carbon Fiber: 22.5%,

[0061] CVD-C: 27.4%,

[0062] CVD-SiC: 19.1%,

[0063] PIP-SiC: 10.4%,

[0064] GSI-SiC: 8.9%,

[0065] TiC: 9.2%, and

[0066] Residual Si: 2.5%.

[0067] A preparation method of the ceramic matrix composite material of this embodiment, comprising the following steps:

[0068] (1) Deposit C layer: use carbon fiber to make a single layer of 0° non-weft cloth, 90° non-weft cloth and tire net, in order of 0° no weft cloth-tire net-90° no weft cloth-tire net Circularly superimposed for laying, and then stitched by needle punching, introducing carbon fiber bundles perpendicular to the laying direction to obtain a three-dimensional needle-punched carbon fiber prefabricated body of 0.53g / cm 3 . The three-dimensional needle-punched carbon fiber preform was deposited and densified by chemical vapor deposition. The ...

Embodiment 3

[0078] A kind of carbon ceramic material of the present invention, the mass percent of material constituent is as follows:

[0079] Carbon Fiber: 22.5%,

[0080] CVD-C: 24.0%,

[0081] CVD-SiC: 10.1%,

[0082] PIP-SiC: 24.8%,

[0083] GSI-SiC: 7.8%,

[0084] TiC: 8.3%, and

[0085] Residual Si: 2.5%.

[0086] A preparation method of the ceramic matrix composite material of this embodiment, comprising the following steps:

[0087] (1) Deposit C layer: use carbon fiber to make a single layer of 0° non-weft cloth, 90° non-weft cloth and tire net, in order of 0° no weft cloth-tire net-90° no weft cloth-tire net Circularly superimposed for laying, and then stitched by needle punching, introducing carbon fiber bundles perpendicular to the laying direction to obtain a three-dimensional needle-punched carbon fiber prefabricated body of 0.53g / cm 3 . The three-dimensional needle-punched carbon fiber preform was deposited and densified by chemical vapor deposition. The carbon sou...

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Abstract

The invention discloses a ceramic-based composite material as well as a preparation method and application thereof. The ceramic-based composite material comprises the following components in percentage by mass: 20%-30% of carbon fibers, 20%-40% of C-VDC, 10%-25% of CVD-SiC, 5%-25% of PIP-SiC, 5%-15% of GSI-SiC, 5%-15% of TiC and less than 3% of residual Si. The preparation method sequentially comprises the following steps: deposition of a C layer on a carbon fiber preform; deposition of a SiC layer; impregnation and cracking of a precursor for preparation of SiC; impregnation of asphalt and carbonization; preparation of TiC; and gas-phase siliconizing. The ceramic-based composite material disclosed by the invention has the advantages of excellent friction and wear resistance, mechanical properties and thermal properties, the content of each component can be flexibly designed and adjusted according to actual requirements, and the requirements of the field of high-performance braking andaerospace structural parts on material properties are met.

Description

technical field [0001] The invention belongs to the field of composite material preparation, and relates to a ceramic-based composite material and its preparation method and application, in particular to a low-residual Si composite material containing multiple ceramic substrates and its preparation method and application. Background technique [0002] With the rapid development of economy and technology, a lot of preparation technology and application research of C / C-SiC composite materials have been carried out at home and abroad in recent years. C / C-SiC ceramic composite materials have the advantages of low density, thermal shock resistance, wear resistance, corrosion resistance, oxidation resistance, friction performance insensitivity to external environmental media (such as mold, oil, moisture, etc.) and long life. As the main heat-resistant material, C / C-SiC ceramic composite material combines the basic advantages of carbon fiber and silicon carbide, and is widely used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/83C04B35/573C04B35/622C04B35/80
CPCC04B35/573C04B35/622C04B35/83C04B2235/3843C04B2235/428C04B2235/48C04B2235/483C04B2235/614C04B2235/616C04B2235/656C04B2235/6567C04B2235/77C04B2235/96C04B2235/9607C04B2235/9684
Inventor 龙宪海周峰匡湘铭汪莉何家琪王成华
Owner 中京吉泰(北京)科技有限责任公司
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