中南大学学报（自然科学版）2016，Vol.47Issue(7)：2221-2226,6.DOI:10.11817/j.issn.1672-7207.2016.07.006
沉积条件对低温各向同性热解炭形貌的影响
Effect of deposition conditions on morphology of low temperature isotropic pyrocarbon
摘要
Abstract
The effects of deposition temperature and propane volume fraction on the morphology of low temperature isotropic pyrocarbon (LTIC) were investigated and the morphology of deposits was accounted by the principle of nuclei−growth. The pyrocarbon was prepared by a quasi-steady-state fluidized bed chemical vapor deposition (FBCVD) with the deposition temperature from 1 250℃to 1 450℃and different propane volume fractions. The results show that the structure dominated by the presence of globular features of LTIC is more obvious as increasing the deposition temperature or propane volume fractions, with the transition from growth mode to nucleation mode in the deposition process, and the density is lower. The pyrocarbon morphology can be determined by deposition mode with deposition conditions, which is correlated to variations in the proportion of linear molecules and small aromatic hydrocarbons to polycyclic aromatic hydrocarbons (PAHS), besides the viscosity of the droplets.关键词
化学气相沉积/低温各向同性热解炭/沉积条件/形貌/沉积机理Key words
chemical vapor deposition/low temperature isotropic pyrocarbon/deposition conditions/morphology/deposition mechanism分类
通用工业技术引用本文复制引用
张建辉,夏文莉,王根明,郭鹏海..沉积条件对低温各向同性热解炭形貌的影响[J].中南大学学报（自然科学版）,2016,47(7):2221-2226,6.基金项目
国家自然科学基金资助项目(50975070)；浙江省自然科学基金资助项目(LY12E05002)(Project(50975070) supported by the National Natural Science Foundation of China （50975070）
Project(LY12E05002) supported by the Natural Science Foundation of Zhejiang Province) （LY12E05002）
