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Three-dimensional carbon fiber reinforced silica-zirconia composite ceramic composite material and preparation method thereof

A three-dimensional carbon fiber and multiphase ceramic technology is applied in the field of three-dimensional carbon fiber reinforced silica-zirconia composite ceramic composite materials and their preparation, and can solve the problem that no three-dimensional carbon fiber preform reinforced silica-zirconia composite ceramic composite material has been found. Research reports, less gaseous raw materials, less than ideal deposition characteristics, etc., to improve the ability of the substrate to withstand and transfer loads, improve the degree of filling, and improve the effect of impregnation efficiency

Active Publication Date: 2020-12-04
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And for fiber-reinforced silica-zirconia multiphase ceramic composites, it is currently suitable for depositing SiO 2 and ZrO 2 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 silica-zirconia composite ceramic composites by liquid phase method

Method used

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  • Three-dimensional carbon fiber reinforced silica-zirconia composite ceramic composite material and preparation method thereof
  • Three-dimensional carbon fiber reinforced silica-zirconia composite ceramic composite material and preparation method thereof
  • Three-dimensional carbon fiber reinforced silica-zirconia composite ceramic composite material and preparation method thereof

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Effect test

Embodiment 1

[0042] A method for preparing a three-dimensional carbon fiber reinforced silica-zirconia composite ceramic composite material of the present invention, comprising the following steps:

[0043] (1) Sol selection: select SiO with a solid phase content of 30wt% 2 -ZrO 2 Composite sol as SiO 2 -ZrO 2 The raw material of multiphase ceramic matrix, in which SiO 2 with ZrO 2 The molar ratio is 1:1, in the above SiO 2 -ZrO 2 Add HNO to composite sol 3 As a stabilizer, HNO 3 The addition amount is SiO 2 25% of the weight of the sol.

[0044] (2) Pretreatment of prefabricated parts: The three-dimensional carbon fiber prefabricated part obtained by stacking and stitching carbon fiber cloth is selected as the reinforcement phase, and the volume fraction of fibers in the three-dimensional carbon fiber prefabricated part is 48%. The selected three-dimensional carbon fiber prefabricated part was placed under vacuum, the temperature was raised to 1400 °C at a rate of 20 °C / min and ...

Embodiment 2

[0053] A method for preparing a three-dimensional carbon fiber reinforced silica-zirconia composite ceramic composite material of the present invention, comprising the following steps:

[0054] (1) Sol selection: select SiO with a solid phase content of 35wt% 2 -ZrO 2 Composite sol as SiO 2 -ZrO 2 The raw material of multiphase ceramic matrix, in which SiO 2 with ZrO 2 The molar ratio is 95:5, in the above SiO 2 -ZrO 2 Add HNO to composite sol 3 As a stabilizer, HNO 3 The amount added is SiO 2 20% of the weight of the sol.

[0055] (2) Pretreatment of prefabricated parts: The three-dimensional carbon fiber prefabricated part with three-dimensional four-way weaving structure is selected as the reinforcement phase, and the volume fraction of fibers in the three-dimensional carbon fiber prefabricated part is 53%. The selected three-dimensional carbon fiber preform was placed in a high-purity argon atmosphere, and the temperature was raised to 1800 °C at a rate of 20 °C / ...

Embodiment 3

[0063] A method for preparing a three-dimensional carbon fiber reinforced silica-zirconia composite ceramic composite material of the present invention, comprising the following steps:

[0064] (1) Sol selection: select SiO with a solid phase content of 20wt% 2 -ZrO 2 Composite sol as SiO 2 -ZrO 2 The raw material of multiphase ceramic matrix, in which SiO 2 with ZrO 2 The molar ratio is 5:95, in the above SiO 2 -ZrO 2 Add HNO to composite sol 3 As a stabilizer, HNO 3 The amount added is SiO 2 20% of the weight of the sol.

[0065] (2) Pretreatment of prefabricated parts: The three-dimensional carbon fiber prefabricated part with two-dimensional semi-woven structure is selected as the reinforcement phase, and the volume fraction of fibers in the three-dimensional carbon fiber prefabricated part is 46%. The selected three-dimensional carbon fiber prefabricated part was placed under vacuum, and the temperature was raised to 1400 °C at a rate of 15 °C / min and kept for 3...

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Abstract

The invention discloses a preparation method of a three-dimensional carbon fiber-reinforced silicon dioxide-zirconium dioxide multiphase ceramic composite material. The preparation method of the three-dimensional carbon fiber-reinforced silicon dioxide-zirconium dioxide multiphase ceramic composite material comprises the following steps of (1) stabilizing SiO2-ZrO2 composite sol; (2) impregnatingthree-dimensional carbon fiber prefabricated members into the stabilized SiO2-ZrO2 composite sol; (3) drying the impregnated three-dimensional carbon fiber prefabricated members; (4) performing thermal treatment; (5) repeating the impregnation-drying-thermal treatment process in the steps of (2) to (4) until the weight gain rate of a three-dimensional carbon fiber-reinforced silicon dioxide-zirconium dioxide multiphase ceramic composite material intermediate in a current impregnation-drying-thermal treatment process relative to a previous impregnation-drying-thermal treatment process is smaller than 1% to obtain the three-dimensional carbon fiber-reinforced silicon dioxide-zirconium dioxide multiphase ceramic composite material. The prepared three-dimensional carbon fiber-reinforced silicon dioxide-zirconium dioxide multiphase ceramic composite material has the advantages of being high in high-temperature resistance and antioxidant and mechanical performance and the like.

Description

technical field [0001] The invention belongs to the technical field of high-temperature-resistant fiber-reinforced ceramic-based composite material and its preparation, and in particular relates to a three-dimensional carbon fiber-reinforced silica-zirconia composite ceramic composite material and a preparation method thereof. Background technique [0002] SiO 2 -ZrO 2 Composite ceramics are SiO 2 and ZrO 2 A solid solution structure compound formed by reaction, with SiO 2 and ZrO 2 It has the advantages of high temperature resistance, oxidation resistance and corrosion resistance. It is an excellent high temperature resistant ceramic material. It has obvious advantages in high temperature catalyst carrier, refractory materials for glass and steelmaking furnaces, and anti-oxidation coating. It has broad application prospects. As a monolithic ceramic, SiO 2 -ZrO 2 The fracture toughness of composite ceramics is low, in most cases it is 2-3 MPa m 1 / 2 . It has been rep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/14C04B35/488C04B35/80C04B35/622
CPCC04B35/14C04B35/481C04B35/488C04B35/622C04B2235/6567C04B2235/6562C04B2235/616C04B2235/5248C04B2235/96
Inventor 马青松曾宽宏
Owner NAT UNIV OF DEFENSE TECH
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