C/C复合材料的体积密度和石墨化度对硬度的影响
来源期刊：中南大学学报(自然科学版)2003年第3期
论文作者：左劲旅 张红波 黄启忠 肖鹏 徐惠娟
文章页码：225 - 227
关键词：C/C复合材料;体积密度;石墨化度;硬度
Key words：carbon/carbon composites; bulk density; graphitization degree; rockwell hardness
摘 要：测试了几组典型的不同体积密度和石墨化度的C/C复合材料洛氏硬度值,研究了C/C复合材料的体积密度和石墨化度与其硬度特性的关系.结果表明:相同石墨化度的C/C复合材料洛氏硬度随其体积密度的增加而增加,相同体积密度的C/C复合材料洛氏硬度随其石墨化度的增加而降低;C/C复合材料体积密度对硬度的影响随其石墨化度的增加而减小;对体积密度为1.75~1.85 g/cm3的C/C复合材料,可据其洛氏硬度的范围大致判断其石墨化度的范围;对一定体积密度和热处理温度的C/C复合材料,可通过洛氏硬度判断基体炭的微观结构特点.
Abstract: The influence of bulk density and graphitization degree on hardness of C/C composites is investigated by means of measuring the rockwell hardness scales of C/C composites with different bulk densities and graphitization degrees. The results show that, for C/C composites, the rockwell hardness scales increase with the increase of bulk density at the same graphitization degree, and decreases with the increase of graphitization degree at the same bulk density. The influence of bulk density on hardness scales of C/C composites decreases with the increase of graphitization degree. For C/C composites with bulk density of 1.75~1.85 g/cm3, the range of graphitization degree can be estimated by the rockwell hardness. For C/C composites with certain bulk density and heat treatment temperatures, the microstructure type can be judged by the hardness scale of C/C composites in some degree.
基金信息：国家重点工业试验性项目
