中文摘要：

采用熔盐反应法在碳纤维表面反应形成了TiC涂层,利用XPS,XRD和SEM对涂层的化学组成、相组成和微观结构进行了分析和表征,研究了反应温度和保温时间对涂层厚度和形貌的影响。结果表明：碳纤维表面形成的是含有少量自由碳的TiC涂层,涂层形貌与原碳纤维表面形貌相似;TiC涂层的厚度随反应温度、保温时间的增加而增加,在700~850℃保温1~4 h,涂层厚度在110 nm以下,且均匀、完整,表面没有裂纹,与碳纤维基体结合较好。

英文摘要：

A TiC coating was fabricated on the surface of carbon fibers by molten salts reaction method.Chemical composition,phase composition and micro-structure of the TiC coating were analyzed and characterized by XPS,XRD and SEM.The influence of reaction temperature and holding time on the TiC coating thickness,morphology and structure was studied.The results show that the TiC coatings with a little free carbon are formed on the carbon fibers,and the coatings strongly resemble the pristine carbon fibers in surface morphology.With the reaction temperature and holding time increasing,the TiC coating thickness increases.A homogenous,continuous and crack-free TiC coating can be synthesized at 700~850 ℃ for 1~4 h in molten salts medium,and presents a thickness less than 110 nm.The coatings combine well with the carbon fibers matrix.