碳/碳复合材料中的微区结构和性能的研究  

Research on Structure and Performance of Different Micro-zone in Carbon/Carbon Composites

作　　者：景介辉[1,2] 黄玉东[1] 刘丽[1] 姜再兴[1] 

机构地区：[1]哈尔滨工业大学,黑龙江哈尔滨150001 [2]黑龙江科技学院,黑龙江哈尔滨150027

出　　处：《化学与粘合》2011年第3期1-3,8,共4页Chemistry and Adhesion

基　　金：长江学者奖励计划基金;国家自然科学基金项目(编号:51073047)

摘　　要：实验以Raman光谱、原位纳米力学测试、偏光显微镜和扫描电镜(SEM)对碳/碳复合材料不同微区的结构和性能进行研究,实验结果表明:碳/碳复合材料不同微区的结构和性能存在明显的差异性,不同微区的石墨化程度是沿着相邻纤维中心径向逐步增强,至纤维间的碳基体最高;碳基体以片层状结构沿纤维表面取向,呈同心圆环状,其光学各向异性远高于纤维内部结构。利用微纳米力学原位测试技术得到纤维表面的摩擦系数远低于基体的摩擦系数。The structure and performance of different micro-zone in carbon/carbon composites had been researched through Raman spectrum, in situ nano-mechanics test, polarized light microscope and scanning electronic microscope. The results showed that there was remarkable difference of structure and performance existed in different micro-zone in carbon/carbon composites. The degree of graphitization in different micro-zone was intensified along radial direction of adjacent fibers center, and became maximum in carbon matrix. Carbon matrix was orientated along fiber surface based lamellar structure, whose shapes were concentric annulus and whose optic anisotropy property was above that of internal structure of fiber. In situ nano-mechanics test was adopted to obtain the results that the coefficient of friction on fiber surface was less than that of carbon matrix.

关 键 词：碳/碳复合材料 RAMAN光谱 SEM 纳米划痕 

分 类 号：TQ342.742[化学工程—化纤工业]