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Three-dimensional carbon fiber preform enhanced yttrium oxide-aluminum oxide complex-phase ceramic composite material and preparation method thereof

A technology of three-dimensional carbon fiber and composite ceramics, which is applied to ceramic products, other household appliances, applications, etc., and can solve the problem of less gaseous raw materials, unsatisfactory deposition characteristics, and no three-dimensional carbon fiber prefabricated reinforced yttrium oxide-alumina composite ceramics Composite material research reports and other issues, to achieve the effect of overcoming brittleness, excellent oxidation resistance, and excellent mechanical properties

Active Publication Date: 2018-01-30
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, for fiber-reinforced yttrium oxide-alumina multiphase ceramic composites, it is currently suitable for depositing Y 2 o 3 and Al 2 o 3 The gaseous raw material is too little, and the deposition characteristics are not ideal, while the liquid raw material is relatively easy to obtain, and the performance is reliable.
So far, there is no research report on the preparation of three-dimensional carbon fiber preform reinforced yttrium oxide-alumina composite ceramic composites by liquid phase method

Method used

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  • Three-dimensional carbon fiber preform enhanced yttrium oxide-aluminum oxide complex-phase ceramic composite material and preparation method thereof
  • Three-dimensional carbon fiber preform enhanced yttrium oxide-aluminum oxide complex-phase ceramic composite material and preparation method thereof
  • Three-dimensional carbon fiber preform enhanced yttrium oxide-aluminum oxide complex-phase ceramic composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A three-dimensional carbon fiber preform reinforced yttrium oxide-alumina composite ceramic composite material of the present invention, comprising a three-dimensional carbon fiber preform and a yttrium oxide-alumina composite ceramic, wherein the yttrium oxide-alumina composite ceramic is a matrix, and the three-dimensional The carbon fiber preform is the reinforcing phase, and the yttrium oxide-alumina composite ceramics are uniformly filled in the gaps of the three-dimensional carbon fiber preform, and in the yttrium oxide-alumina composite ceramic matrix, Y 2 o 3 with Al 2 o 3 The molar ratio is 3:5 (corresponding to the YAG crystal phase composition). In this implementation, the porosity of the three-dimensional carbon fiber preform reinforced yttrium oxide-alumina composite ceramic composite material is 14.3%.

[0044] In this embodiment, the three-dimensional carbon fiber prefabricated part is a three-dimensional carbon fiber prefabricated part obtained by stac...

Embodiment 2

[0056] A three-dimensional carbon fiber preform reinforced yttrium oxide-alumina composite ceramic composite material of the present invention, comprising a three-dimensional carbon fiber preform and yttrium oxide-alumina composite ceramics, wherein the yttrium oxide-alumina composite ceramics is a matrix, Al 2 o 3 The molar content in the composite ceramics is 5%, the three-dimensional carbon fiber preform is the reinforcing phase, and the yttrium oxide-alumina composite ceramics is evenly filled in the gaps of the three-dimensional carbon fiber preform. In this implementation, the three-dimensional carbon fiber preform reinforces the yttrium oxide - The porosity of the alumina multiphase ceramic composite is 10.8%.

[0057] In this embodiment, the three-dimensional carbon fiber prefabricated part is a three-dimensional carbon fiber prefabricated part with a three-dimensional four-way weaving structure, and the volume fraction of fibers in the three-dimensional carbon fiber p...

Embodiment 3

[0069] A three-dimensional carbon fiber preform reinforced yttrium oxide-alumina composite ceramic composite material of the present invention, comprising a three-dimensional carbon fiber preform and yttrium oxide-alumina composite ceramics, wherein the yttrium oxide-alumina composite ceramics is a matrix, Al 2 o 3 The molar content in the composite ceramics is 95%, the three-dimensional carbon fiber preform is the reinforcing phase, and the yttrium oxide-alumina composite ceramics are evenly filled in the gaps of the three-dimensional carbon fiber preform. In this implementation, the three-dimensional carbon fiber preform reinforces the yttrium oxide - The porosity of the alumina multiphase ceramic composite is 15.0%.

[0070] In this embodiment, the three-dimensional carbon fiber preform is a three-dimensional carbon fiber preform with a two-dimensional semi-woven structure, and the volume fraction of fibers in the three-dimensional carbon fiber preform is 46%.

[0071] In ...

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Abstract

The invention discloses a three-dimensional carbon fiber preform enhanced yttrium oxide-aluminum oxide complex-phase ceramic composite material and a preparation method thereof. The composite materialcomprises a three-dimensional carbon fiber preform and yttrium oxide-aluminum oxide complex-phase ceramic, in the yttrium oxide-aluminum oxide complex-phase ceramic, the molar content of Al2O3 is 5%-95%, pores of a three-dimensional carbon fiber preform are uniformly filled with the yttrium oxide-aluminum oxide complex-phase ceramic, and the porosity of the three-dimensional carbon fiber preformenhanced yttrium oxide-aluminum oxide complex-phase ceramic composite material is 10%-15%. The preparation method comprises the following steps; (1) preparing yttrium oxide-aluminum oxide composite sol; (2) carrying out dipping; (3) drying; (4) carrying out heat treatment; and (5) repeating a dipping-drying-heat treatment process in the step (2)-step (4). The composite material has the advantagesof low porosity, high compactness, high temperature resistance, oxidation resistance, excellent mechanical property and the like. The preparation method is high in preparation efficiency, and the compactness and mechanical property of the prepared composite material are improved remarkably.

Description

technical field [0001] The invention relates to the technical field of high temperature resistant fiber reinforced ceramic matrix composite materials, in particular to a three-dimensional carbon fiber preform reinforced yttrium oxide-alumina composite ceramic composite material and a preparation method thereof. Background technique [0002] Yttrium oxide-alumina composite ceramics is an excellent high-temperature-resistant ceramic material, which has the advantages of high temperature resistance, oxidation resistance, creep resistance, and corrosion resistance. There are three transition compounds in the yttrium oxide-alumina binary system, which are the cubic yttrium aluminum garnet (YAG, whose composition is 3Y 2 o 3 5Al 2 o 3 ), monoclinic yttrium aluminum monoclinic (yttrium aluminum monoclinic, YAM, composed of 2Y 2 o 3 ·Al 2 o 3 ) and distorted perovskite structure and hexagonal yttrium aluminate (yttrium aluminum perovskite, YAP, composed of Y 2 o 3 ·Al 2 o ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/622C04B35/505C04B35/10C04B38/00
Inventor 马青松曾宽宏
Owner NAT UNIV OF DEFENSE TECH
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