摘要
考察了高导热带状炭纤维在高温石墨化过程中微观结构的变化对其耐氧化性能的影响，研究表明：随着石墨化温度的提高，带状炭纤维的石墨化度明显提高，微晶尺寸变大，缺陷增加；当温度从1600℃升到3000℃时，孔缺陷使带状纤维的耐氧化性能明显降低；微观结构的变化使带状纤维的耐氧化性能增强；孔缺陷的影响对耐氧化性能的影响更大。
This text tests the influence of the change of high--thermal conductivity rectangle carbon fibre＇s microstructure flaw on its oxidation resistsance in the process of graphitization. The research indicates that with the increase of graphitization temperature, the degree of graphitization enhanced clearly, the size of minicrystal increased,the microstructure flaw increased while the temperature of graphitization arising to 3 000℃ form 1 600℃ ,the microstructure flaw induces the marked decrease of rectangle carbon fibre＇s oxidation resistance the change of microstructure results in the cncrease of rectangle carbon fibre＇s oxidation resistance and the influence of microstructure flaw on oxidation resistance of rectangle carbon fibre is bigger.
出处
《炭素》
2009年第2期29-34,共6页
Carbon
关键词
带状纤维
耐氧化性
微观结构
rectangle carbon fibre
oxidation resistance
oxidation resistance microstructure
