采用透射电镜和扫描电镜研究了SiC纤维增强Ti基复合材料的界面反应,重点分析了C涂层对界面行为的影响.结果表明,C涂层可以明显改善纤维和基体之间的界面结合状况;SiC/C/Ti-6Al-4V复合材料的界面反应产物是主要为TiC,而无C涂层SiC/Ti-6Al-4V的界面反应产物为TiC,Ti5Si3和Ti3SiC2界面反应层生长受扩散控制,其厚度增长满足抛物线生长规律,SiC/C/Ti-6Al-4V由于C涂层消耗完毕前后的不同情况,其界面反应层生长并不完全符合这一规律,C涂层的存在可以有效的抑制界面反应的进行.
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