c c 复合材料断口热解炭及其界面形貌sem 分析.pdfVIP

223 矿　冶　工　程 Vol.22 №3 2002 9 MININ AND METALLUR ICAL EN INEERIN September 2002 C C SEM 张福勤, 黄伯云, 黄启忠, 陈腾飞, 巩前明, 熊　翔 (, 410083) 　:SEM, 、2 C C , , 。 : , , ;, , , , 。 , :, , , 。 :C C ;;CVD;SEM Analysis of FractureMorphologies of Pyrocarbons and Their Interface in C C Compositesby SEM ZHANG Fu-qin, HUANG Bai-yun, HUANG Qi-zhong, CHENG eng-fei, GONG Qian-ming, XIONG Xiang (State Key Laboratory f or Powder Meta llurgy , Central South University , Changsha 410083, Hunan, China ) Abstract:he fracture morphologies of pyrocarbons and the interface between them in two kinds of C C composites have been analyzed by SEM.he reinforcement of the two composites is laminated carbon felt, and the matrix of the two composites con- sists exclusively of SL (smooth lamina)or RL(rough lamina)pyrocarbon respectively .Experimental results show that plastic deformation can be observed in RL pyrocarbon in fracture surface vertical to the axis of carbon fiber, whereas no plastic defor- mation can be observed in SL pyrocarbon.he interface between RL pyrocarbon is scale-like with rough outline and smooth inner face in fracture surface parallel to the axis of carbon fiber, whereas the interface between SL pyrocarbon is smooth.he scale-like structure can be related to CVD process.A model of the CVD process is presented:carbon is deposited at the out- line location of the scale, which makes the inner face of the scale become not infiltrated to vapor flow, as a result, really strong interface bonding only occurs at the outline location. Key words:C C composite;fracture morphology;CVD;SEM 　　C C , 1　 , 、、 。 2 C C (PAN) , ( 700), 。 。1