摘要
采用非等温动力学方法对天然石墨和Al2O3包覆石墨复合粉体的氧化行为进行研究。结果表明,天然石墨的氧化表观活化能为167.793 kJ/mol,以氯化铝、硝酸铝和硫酸铝为前驱体制备的Al2O3包覆石墨复合粉体的氧化反应表观活化能均有所提高,抗氧化能力增强。
Non-isothermal oxidation kinetics is employed for investigating the oxidation behavior of natural and alumina coated graphite powder. It is found that the apparent activity energy corresponding to the oxidation of natural graphite powder is 167.793 KJ/mol. Compared with uncoated natural graphite, graphite powder coated by alumina prepared from precursors of AlCl3, Al（NO3）3 and Al2 （SO4）3 shows a greater oxidation activity energy and much improved oxidation resistance.
出处
《武汉科技大学学报》
CAS
2008年第3期260-262,共3页
Journal of Wuhan University of Science and Technology
基金
武汉市科技局科技攻关项目(20051002041)
关键词
AL2O3
包覆
石墨粉
氧化行为
alumina
coating
graphite powder
oxidation behavior
