中南大学学报（自然科学版）2012，Vol.43Issue(2)：460-465,6.
炭纤维硝酸氧化及对热解炭微观结构的影响
Effect of nitric acid oxidation on carbon fibers and microstructure of pyrocarbon during CVD
摘要
Abstract
Nitric acid oxidation was performed on carbon fibers before CVD. The effects of nitric acid oxidation on carbon fibers and the microstructure of pyrocarbon were studied. The results show that the grooves on fiber surface deepen first and then weaken with the increase of oxidation time during the oxidation by 66% nitric acid. The surface etch of carbon fibers treated for 40 min is uniform. The performs treated by nitric acid (66%, 33%, 22%) for 40 min are dandified by CVD. The microstructure of pyrocarbon in composite treated by 33% nitric acid is the best. The microstructure order degree of pyrocarbon decreases from the inside to the outside. The proper oxidation and etch on the fiber surface bring about certain oxygen functional groups such as carbonyl and carboxyl, which induce the ordered deposition of pyrocarbon during CVD.关键词
炭纤维/硝酸氧化/热解炭/CVDKey words
carbon fiber/ nitric acid oxidation/ pyrocarbon/ CVD分类
信息技术与安全科学引用本文复制引用
陈洁,于澍,熊翔..炭纤维硝酸氧化及对热解炭微观结构的影响[J].中南大学学报（自然科学版）,2012,43(2):460-465,6.基金项目
国家自然科学基金资助项目(50702078) （50702078）
