中南大学学报（自然科学版）2011，Vol.42Issue(3)：600-604,5.
采用微正压CVD法制备块体各向同性热解炭
Preparation of bulk isotropic pyrocarbons by micro-positive CVD
摘要
Abstract
Bulk isotropic pyrocarbon materials were prepared by micro-positive chemical vapor deposition (CVD) with self-designed CVD furnace, using propylene as carbon source gas, nitrogen and hydrogen as carrier gas and dilution gas.The density of isotropic pyrocarbons was measured by water displacement method. The microstructure and surface morphology as well as fracture characteristics of isotropic pyrocarbons were studied by polarized light microscope,scanning electron microscope and transmission electron microscope, respectively. A new deposition mechanism of isotropic pyrocarbons-electromagnetic field fluidization deposition mechanism was proposed. The results show that the bulk isotropic pyrocarbons which are fabricated in 10-40 h, at 1 000-1 300 ℃, are mainly composed of the spherical pyrocarbon granules. With density of 1.73 to 1.93 g/cm3, and thickness of 5 to 15 mm, it has compact structure and few pores. Most of the spherical pyrocarbon granules are congrutinated with each other.关键词
CVD/各向同性炭/沉积机理分类
通用工业技术引用本文复制引用
李建青,满瑞林,谢志勇,谭瑞轩,黄启忠..采用微正压CVD法制备块体各向同性热解炭[J].中南大学学报（自然科学版）,2011,42(3):600-604,5.基金项目
国家自然科学基金资助项目(50772134) （50772134）
国家重点基础研究发展计划("973"计划)项目(2006CB600901) （"973"计划）
