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C/SiC-ZrC-TiC-Cu composite material and preparation method thereof

A sic-zrc-tic-cu, composite material technology, applied in the field of C/SiC-ZrC-TiC-Cu composite material and its preparation, can solve the problem of high infiltration equipment requirements, affecting Cu wettability, and insufficient reaction and other problems to achieve the effect of improving ablation resistance, improving wettability, and overcoming poor wettability

Active Publication Date: 2019-06-07
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the infiltration process, the Zr element needs to react with C in the composite material to improve the wettability of Cu, but the C and SiC in the C / C-SiC matrix are diffusely distributed, resulting in insufficient reaction between Zr and the C source in the matrix, affecting The wettability of Cu
In addition, the melting point of Zr-Cu alloy is relatively high, and the temperature of infiltration reaction is as high as about 1800°C, which requires high requirements for infiltration equipment.

Method used

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  • C/SiC-ZrC-TiC-Cu composite material and preparation method thereof
  • C/SiC-ZrC-TiC-Cu composite material and preparation method thereof

Examples

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preparation example Construction

[0035] The present invention provides a kind of preparation method of C / SiC-ZrC-TiC-Cu composite material in the first aspect, and this preparation method comprises the following steps:

[0036] (1) Provide C / SiC-ZrC composite materials for subsequent preparation steps

[0037] In this step, the C / SiC-ZrC composite material can be prepared by existing methods, but it is preferable to ensure that the density of the C / SiC-ZrC composite material is 1.2 to 1.7 g / cm 3 , for example, can be 1.2g / cm 3 , 1.3g / cm 3 , 1.4g / cm 3 , 1.5g / cm 3 , 1.6g / cm 3 , 1.7g / cm 3 . The C / SiC-ZrC composite material used as the skeleton of the subsequent infiltration Ti-Cu alloy should have certain mechanical properties and also have certain porosity. If the density is too high, the mechanical properties are good but the porosity is small; if the density is too small, the porosity is large but Insufficient mechanical properties, the present invention preferably has 1.2~1.7g / cm 3 The C / SiC-ZrC comp...

Embodiment 1

[0053] S1. Preparation of C / SiC-ZrC composite material

[0054] Put the carbon fiber needle-punched preform into the CVI-C furnace, and pass C 3 h 8 Mixed gas with Ar, deposited for 80 hours out of the furnace, then loaded into the CVI-SiC furnace, under vacuum and 1050 ° C, passed CH 3 Cl 3 Si, H 2 Mixed gas with Ar, deposited for 120 hours and released from the furnace to obtain a carbon fiber needle-punched preform with a double-layer composite interface layer of PyC on the inner layer and SiC on the outer layer, and then subjected to high temperature treatment at 1700 ° C for 2 hours.

[0055] Using silicon-zirconium ceramic precursor impregnating agent, vacuum impregnation-pressure curing-1000°C high-temperature pyrolysis was performed on the high-temperature-treated carbon fiber needle-punched preform to prepare a C / SiC-ZrC composite material with a density of 1.31g / cm 3 .

[0056] S2. Preparation of C / SiC-ZrC composite material with C matrix

[0057] Aminophenol a...

Embodiment 2

[0062] Preparation method is basically the same as Example 1, except that:

[0063] In S2, a C / SiC-ZrC composite with a C matrix at a weight gain of 5% was ensured.

[0064] After infiltration, the obtained C / SiC-ZrC-TiC-Cu sweating cooling material has a density of 3.09g / cm 3 , the bending strength is 186MPa, and the line ablation rate of acetylene flame ablation for 60s is 0.0008mm / s.

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Abstract

The invention relates to a C / SiC-ZrC-TiC-Cu composite material and a preparation method thereof. The preparation method comprises the following steps: (1) providing C / SiC-ZrC composites; (2) depositing C matrix in porosity of the C / SiC-ZrC composites; using TiCu alloy to infiltrate the material. The method deposits the C matrix in the porosity of the C / SiC-ZrC composites in advance, and then introduces TiCu alloy by capillary adsorption. The C matrix is distributed continuously in the pores, which not only ensures the sufficient reaction between C and Ti and improves the wettability between Cuand matrix SiC, but also introduces a new ultra-high temperature phase TiC. The C / SiC-ZrC composites are used to perform Ti-Cu alloy co-infiltration, so as to overcome the disadvantages of poor oxidation and ablation resistance of the C / SiC composites at high temperature and improve the ablation resistance of the composite material significantly.

Description

technical field [0001] The invention relates to the technical field of high temperature resistant composite materials, in particular to a C / SiC-ZrC-TiC-Cu composite material and a preparation method thereof. Background technique [0002] Developed countries such as the United States, France, Germany and Japan have carried out a large number of preparation technology and application research of C / SiC composite materials in the past 30 years. Since the 1980s, my country has also made great progress in the field of preparation technology of C / SiC composite materials. Some research units represented by Northwestern Polytechnical University, Central South University, National University of Defense Technology, Shanghai Institute of Ceramics and Metal Research Institute of Chinese Academy of Sciences have made major technological breakthroughs in the preparation of C / SiC composite materials, and the published material properties have been published. close to or exceed internationa...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B35/56C04B35/573C04B41/88
Inventor 裴雨辰王鹏于艺霍鹏飞金鑫刘俊鹏左红军
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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