A C / C-TaC-ZrB2 ceramic matrix composite and preparation method thereof

A technology of c-tac-zrb2 and composite materials, which is applied in the field of C/C-TaC-ZrB2 ceramic matrix composite materials and its preparation, can solve the problems of metal Zr easily damage C fibers and the mechanical properties of composite materials, etc. Uniform adhesion, low degree of mechanical and thermal damage, anti-oxidation effect

Inactive Publication Date: 2015-04-08
QINGDAO MATE RUIOU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the composite material obtained by the above invention has excellent properties such as ultra-high temperature resistance, oxidation resistance, ablation resistance, and thermal shock resistance, the mechanical properties of the composite material are significantly reduced due to the fact that metal Zr is easy to damage the C fiber during the infiltration process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Use T700-12K non-weft fabric and T700-12K net tire to prepare needle felt, and its bulk density is about 0.50g / cm 3 . Using CVI process, polycarbosilane PCS is used as the precursor, nitrogen is used as the dilution gas, and the reaction temperature is 1500°C to prepare the C / C composite body. The bulk density of the C / C composite body is about 0.65g / cm 3 . Will Ta 2 o 5 Add the micropowder into the isopropanol solution of polyvinylpyrrolidone K17 (PVPK17) while grinding to form a modified Ta 2 o 5 Micronized powder, isopropanol solution of polyvinylpyrrolidone K17 (PVPK17) and Ta 2 o 5 The mass ratio of fine powder is 5:1. Will modify Ta 2 o 5 The fine powder is dispersed in the phenolic resin, in which a suspension is formed, and the modified Ta 2 o 5 The mass ratio of fine powder and phenolic resin is 1:6. The C / C composite body is immersed in the suspension, and heated to 1500° C. under a hydrogen atmosphere to react to generate TaC. Mix absolute ethano...

Embodiment 2

[0036] Use T700-12K non-weft fabric and T700-12K net tire to prepare needle felt, and its bulk density is about 0.50g / cm 3 . Using CVI process, polycarbosilane PCS is used as the precursor, nitrogen is used as the dilution gas, and the reaction temperature is 1700°C to prepare the C / C composite body. The bulk density of the C / C composite body is about 0.70g / cm 3 . Will Ta 2 o 5 Add the micropowder into the isopropanol solution of polyvinylpyrrolidone K17 (PVPK17) while grinding to form a modified Ta 2 o 5 Micronized powder, isopropanol solution of polyvinylpyrrolidone K17 (PVPK17) and Ta 2 o 5 The mass ratio of fine powder is 5:1. Will modify Ta 2 o 5 The fine powder is dispersed in the phenolic resin, in which a suspension is formed, and the modified Ta 2 o 5 The mass ratio of fine powder and phenolic resin is 1:6. The C / C composite body is immersed in the suspension, and heated to 1600° C. under a hydrogen atmosphere to react to generate TaC. Mix absolute ethano...

Embodiment 3

[0039] Use T700-12K non-weft fabric and T700-12K net tire to prepare needle felt, and its bulk density is about 0.60g / cm 3 . Using CVI process, polycarbosilane PCS is used as the precursor, nitrogen is used as the dilution gas, and the reaction temperature is 1800°C to prepare the C / C composite body. The bulk density of the C / C composite body is about 0.80g / cm 3 . Will Ta 2 o 5 Add the micropowder into the isopropanol solution of polyvinylpyrrolidone K17 (PVPK17) while grinding to form a modified Ta 2 o 5 Micronized powder, isopropanol solution of polyvinylpyrrolidone K17 (PVPK17) and Ta 2 o 5 The mass ratio of fine powder is 5:1. Will modify Ta 2 o 5 The fine powder is dispersed in the phenolic resin, in which a suspension is formed, and the modified Ta 2 o 5 The mass ratio of fine powder and phenolic resin is 1:6. The C / C composite body is immersed in the suspension, and heated to 1700° C. under a hydrogen atmosphere to react to generate TaC. Mix absolute ethano...

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Abstract

A C / C-TaC-ZrB2 ceramic matrix composite comprises C fiber, a C matrix, a TaC matrix and a ZrB2 matrix. The TaC matrix is between the C / C matrix and ZrB2 matrix, the volume fraction of C fiber is 32-61%, the volume fraction of C matrix is 12-22%, the volume fraction of TaC matrix is 5-12%, and the volume fraction of ZrB2 matrix is 10-34%. The surface of the modified C / C composite is covered by TaC and ZrB2; the TaC matrix provides protection for the C fiber to prevent damage of Zr metal matrix to the matrix in the subsequent reaction; and at high temperature, B2O3 generated by oxidation of ZrB2 can effectively heal defects on the matrix, so as to further effectively prevent C / C matrix from oxidation.

Description

technical field [0001] The invention relates to the field of ceramic matrix composite materials, in particular to a C / C-TaC-ZrB 2 Ceramic matrix composites and methods for their preparation. technical background [0002] Carbon / carbon (C / C) composite material is carbon fiber reinforced carbon matrix composite material, which has excellent ablation resistance, high specific strength, high specific modulus and excellent mechanical properties and dimensional stability at high temperature, especially suitable for It is used in high-temperature environments with strict requirements on material properties. For example, carbon / carbon composites, as one of the most successfully developed materials in the aerospace field, are widely used in the manufacture of spacecraft nose cones, wing leading edges, solid rocket motor (SRM) throat liners and expansion sections, and aircraft brake pads, etc. part. Among them, the application on the throat liner of solid rocket motor is the most p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/52C04B35/56C04B35/58C04B35/622
Inventor 岑伟郭雷
Owner QINGDAO MATE RUIOU NEW MATERIAL TECH CO LTD
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