毡体热处理对炭/炭复合材料氧化行为的影响  

INFLUENCE OF CARBON FELT HEAT TREATMENT ON CARBON/CARBON COMPOSITES OXIDATION BEHAVIOR

作　　者：周蔚虹[1] 张红波[1] 刘洪波[1] 

机构地区：[1]湖南大学材料科学与工程学院,长沙410082

出　　处：《炭素》2003年第4期19-22,共4页Carbon

基　　金：国家自然科学基金(50082002)

摘　　要：将炭纤维毡体进行两组不同温度的高温热处理,然后采用化学气相沉积工艺制备炭/炭复合材料,考察了两组材料在不同温度、时间下的氧化失重率,利用X射线衍射技术分析了炭纤维的石墨化度,采用扫描电子显微镜观察了氧化前、后炭/炭复合材料的形貌,探讨了两组材料的氧化反应过程及其氧化行为差异的原因。Carbon felt were heat treated at two different temperature, on subsequence the carbon/carbon composites were fabricated with chemical vapor deposition(CVD). The oxidation weight loss rates of the two kinds of samples at different temperature and time were investigated. Graphitization degree and mor-phlogy of the carbon fibers were analysed by X-ray diffraction,and SEM observaion was performed on the samples before and after the test. The oxidation process and the difference cause of oxidation behavior of the two samples were researched.

关 键 词：炭纤维毡体 高温热处理 制备 炭/炭复合材料 氧化行为 失重率 

分 类 号：TB332[一般工业技术—材料科学与工程]