用CVI工艺制备碳纤维增强C－SiC梯度热结构材料  

Carbon Fiber Reinforced C-SiC Functionally Gradient Materials Prepared by CVI

作　　者：刘文川[1] 王作明[1] 孙守金[1] 魏永良[1] 刘敏[1] 

机构地区：[1]中国科学院金属研究所

出　　处：《高技术通讯》1994年第9期21-24,共4页Chinese High Technology Letters

基　　金：国家自然科学基金

摘　　要：用化学气相渗（ＣＶＩ）工艺，分别用分段沉积和共沉积方法制取了Ｃ／Ｃ－ＳｉＣ梯度热结构材料，并比较了二者的成分梯度、性能与组织结构特征。Carbon fiber reinforced C-SiC functionally gradient materials(FGMs)were prepared by CVI.Thethermal-gradient process was used in this work according to a two-step procedure or by means of co-deposition from C2H2+CH3SiCl3+H2+Ar system.Carbon fiber preform is PAN based carbon felt. Themicrortructure , distribution of Si in matrix,mechanical and physical properties, as well as thermal barriercharacteristics of FGMs were investigated.

关 键 词：化学气相渗 碳化硅 碳纤维 航空 

分 类 号：V258.3[一般工业技术—材料科学与工程]