| 卢国锋.Si-O-C界面对C/Si-C-N复合材料性能的影响[J].材料导报,2017,31(16):121-124 |
| Si-O-C界面对C/Si-C-N复合材料性能的影响 |
| Influence of Si-O-C Interlayer on the Properties of C/Si-C-N Composites |
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| DOI：10.11896/j.issn.1005-023X.2017.016.025 |
| 中文关键词: 抗氧化性能 弯曲强度 热膨胀 陶瓷基复合材料 |
| 英文关键词: oxidation resistance, flexural strength, thermal expansion, ceramic matrix composites |
| 基金项目:陕西省教育厅科研计划项目(16JK1269) |
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| 摘要点击次数: 2670 |
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| 中文摘要: |
| 采用CVI工艺制备基体、PIP方法制备界面,成功制备出了具有Si-O-C界面层的碳纤维增强Si-C-N陶瓷基复合材料(C/Si-O-C/Si-C-N),研究了Si-O-C界面层对C/Si-C-N复合材料力学性能、抗氧化性能和热膨胀性能的影响。结果表明,C/Si-C-N陶瓷基复合材料在采用Si-O-C界面层后,相对于采用热解碳界面的同类复合材料,其抗氧化性能明显提高,强度则基本相当,在实验温度区间内,平均热膨胀系数略有升高。 |
| 英文摘要: |
| 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. |
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