基体炭结构对炭/炭复合材料的界面结合强度的影响  

Influence of Carbon Matrix Type and Microstructure on Fibre/Matrix Interfacial Strength of C/C Composites

作　　者：陈腾飞[1] 龚伟平[2] 刘根山[2] 黄玉东[3] 王超[3] 

机构地区：[1]湖南科技大学材料表面工程研究所,湖南湘潭411201 [2]中南大学粉末冶金国家重点实验室,湖南长沙410083 [3]哈尔滨工业大学应用化学系,黑龙江哈尔滨150001

出　　处：《矿冶工程》2004年第1期77-79,共3页Mining and Metallurgical Engineering

基　　金：国家重点工业性试验项目 (计高技 1 998[1 81 7] )

摘　　要：借助金相、透射电镜技术比较了 4种典型的炭 炭复合材料的微观结构 ,采用单纤维顶出法测定了炭 炭复合材料中的炭纤维 基体炭界面强度 ,研究了基体炭结构对界面强度的影响。结果表明 :基体炭的结构和类型影响炭纤维 基体炭间的界面强度 ,粗糙层热解炭与炭纤维间的界面强度比光滑层热解炭的高 ,而树脂炭和沥青炭由于与炭纤维间存在化学键合 ,因而界面强度较高。The authors compared microstructures of 4 types of C/C composites by means of metallographic and transmission electron microscopic techniques. The interfacial strength between carbon fibre and carbon matrix in the C/C composites was determined by the single fibre push out test and the influence of type and microstructure of carbon matrix on the interfacial strength was investigated. The results have shown that the type and microstructure of carbon matrix have a great effect on the interfacial strength between carbon fibre and carbon matrix, the interfacial strength between rough laminar pyrolytic carbon(RL PyC) and carbon fibre is higher than the one between smooth laminar pyrolytic carbon(SL PyC) and carbon fibre. However, the interfacial strength of resin char and pitch coke with carbon matrix is higher due to chemical bonds existing between them.

关 键 词：炭/炭复合材料 界面强度 单纤维顶出法 热解炭 树脂炭 沥青炭 微观结构 

分 类 号：TB332[一般工业技术—材料科学与工程]