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。
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 average 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 temperature range.
作者
卢国锋
LU Guofeng(College of Chemistry and Materials, Weinan Normal University, Weinan 714099)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2017年第16期121-124,共4页
Materials Reports
基金
陕西省教育厅科研计划项目(16JK1269)
关键词
抗氧化性能
弯曲强度
热膨胀
陶瓷基复合材料
oxidation resistance
flexural strength
thermal expansion
ceramic matrix composites
