无机材料学报2013，Vol.28Issue(8)：853-858,6.DOI:10.3724/SP.J.1077.2013.12622
C/C复合材料在原子氧辐照下的结构性能演变
Degradation Behaviour of C/C Composites by Atomic Oxygen Irradiation
摘要
Abstract
Erosion mechanisms of C/C composite and C/C-SiC composite (matrix modification for C/C composite using SiC) irradiated by atomic oxygen (AO) were studied by analyzing erosion morphology and mass loss rate.Thermal diffusivity coefficient,thermal expansion coefficient and flexural strength were determined before and after AO exposure test to discuss thermal physics and mechanics of AO damage.The results show that the erosion of C/C composite is the cooperation of chemical oxidation and mechanical erosion,which can be termed bombardment-induced surface chemical etching.The SiC components show good resistance to atomic oxygen erosion and hinder internal erosion.However,SiC components can also be damaged mechanically as the exposure time increasing.The mass loss rate of C/C composite is approximately proportional to the exposure time,while the mass loss rate of C/C-SiC composite is smaller than that of C/C composites and the increase of the mass loss rate slows down as the exposure time increasing.The changes of thermophysical property and mechanical property show that the overall performances of C/C and C/C-SiC have been changed to some extent after the AO exposure testing.关键词
C/C复合材料/C/C-SiC复合材料/原子氧Key words
C/C composite/ C/C-SiC composite/ atomic oxygen分类
化学化工引用本文复制引用
田聪,成来飞,栾新刚..C/C复合材料在原子氧辐照下的结构性能演变[J].无机材料学报,2013,28(8):853-858,6.基金项目
国家973计划项目(2011CB605806) （2011CB605806）
国家自然科学基金(50820145202) （50820145202）
National Basic Research Program of China(2011CB605806) （2011CB605806）
National Natural Science Foundation of China (50820145202) （50820145202）
