Si-O-C界面对C/Si-C-N复合材料性能的影响<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.016.025

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Abstract The carbon fiber reinforced Si-C-N ceramic matrix composite with a Si-O-C interlayer(C/Si-O-C/Si-C-N) was fabricated with the matrix fabricated by CVI and the interphase fabricated by PIP. The influence of Si-O-C interlayer on the mechanical properties, oxidation resistance and thermal expansion properties of the composites was investigated. The results indicate that compared to the C/Si-C-N with a pro-carbon interlayer(C/PyC/Si-C-N), the oxidation resistance of C/Si-C-N composite with a Si-O-C interlayer (C/Si-O-C/Si-C-N) was improved. The strength of C/Si-O-C/Si-C-N can compare with that of C/PyC/Si-C-N. The ave-rage coefficient of thermal expansion of C/Si-O-C/Si-C-N was higher than that of C/PyC/Si-C-N throughout the experimental tempe-rature range.

Key words： oxidation resistance flexural strength thermal expansion ceramic matrix composites

Published: 25 August 2017 Online: 2018-05-07

CLC number:

TB332

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	LU Guofeng

Cite this article:

LU Guofeng. Influence of Si-O-C Interlayer on the Properties of C/Si-C-N Composites[J]. Materials Reports, 2017, 31(16): 121-124.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.016.025 OR https://www.mater-rep.com/EN/Y2017/V31/I16/121

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