Combustion characteristics and kinetic analysis of micron-sized aluminum powders in CO2

摘要：

　　The combustion characteristics of micron-sized aluminum powders in carbon dioxide environment were researched by simultaneous thermal analysis technology (TG/DSC), using a series of heating rates (5, 10, 15, 20℃ min-1).Furthermore, kinetic analysis was investigated.The results show that the combustion process of micron-sized aluminum powders in carbon dioxide is divided into three-stage mass gain: the initial oxidation stage, the intense burning stage and the last oxidation stage.The combustion performance is increased with increasing the heating rate.The kinetic parameters of the initial oxidation stage and the intense burning stage were calculated by Ozawa and Coats-Redfem methods.The results show that the model of the initial oxidation stage is a first-order chemical reaction model and the apparent activation energy is 287.05 kJ/mol.The model of the intense burning stage fits a three dimensional diffusion Z-L-T model and the apparent activation energy is 454.46 kJ/mol.

关键词： micron-sized aluminum powders carbon dioxide combustion characteristics kinetic analysis

作者: SHI Shaohui ZHU Baozhong SUN Yunlan LI Hao

作者单位: School of Metallurgy & Resources,Anhui University of Technology,Maanshan,Anhui 243002,China

会议类型: 国际会议

会议名称: 2013 International Autumn Seminar on Propellants, Explosives and Pyrotechnics(2013国际推进剂、炸药、烟火技术秋季研讨会)

会议地点: 成都

会议语种:英文

页码: 414-420

在线出版日期: 2013-09-24（万方平台首次上网日期，不代表论文的发表时间）