【作者】 黄启忠； 谢志勇； 苏哲安； 张福勤； 张明瑜； 梁锦华； 高莹；

【Author】 Huang Qizhong Xie Zhiyong Su Zhean Zhang FuqinZhang Mingyu Liang Jinhua Gao Ying(State Key Laboratory for Powder Metallurgy, Central SouthUniversity, Changsha ,410083 )

【机构】 中南大学粉末冶金国家重点实验室；

【摘要】 以显微激光拉曼光谱为分析手段,以CVI碳/碳复合材料为对象,从三个层面对材料中微区热解炭的结构及其成因进行了分析。结果表明:样品从表层往核心,热解炭的石墨化度和微晶尺寸逐渐增大;同一纤维周围不同环位的热解炭,石墨化度随沉积的进行,先增加、后减少;纤维密集处沉积热解炭的石墨化度大于稀疏处。更多还原

【Abstract】 The structural parameters of pyrolytic carbon of micro-region in C/C composites infiltrated by CVI were characterized by laser Raman microspectroscopy. The results shown that , graphitization degree of core is more than surface layer in the perform; Round the same carbon fiber, graphitization degree increases at first, then decreases as deposition; The graphitization degree is higher in place of denseer carbon fiber .更多还原