碳纤维表面熔盐反应制备TiC涂层  

Preparation of TiC Coating on the Surfaces of Carbon Fibers by Molten Salts Reaction

作　　者：董志军[1,2] 李轩科[1,2] 从野[1] 袁观明[1] 崔正威[1] 王元骅[1] 李楠[2] 姜召阳[3] 

机构地区：[1]武汉科技大学湖北省煤转化与新型炭材料重点实验室,武汉430081 [2]武汉科技大学湖北省耐火材料与高温陶瓷重点实验室,武汉430081 [3]航天材料及工艺研究所先进功能复合材料技术国防科技重点实验室,北京100076

出　　处：《表面技术》2011年第1期1-4,共4页Surface Technology

基　　金：国家自然科学基金面上项目(50972110);国家自然科学基金青年基金项目(20803054);湖北省自然科学基金重点项目(2009CDA036);湖北省中青年人才项目基金(Q20081112)

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。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.

关 键 词：熔盐反应 碳纤维 TIC涂层 

分 类 号：TG174.45[金属学及工艺—金属表面处理]