中南大学学报（自然科学版）2016，Vol.47Issue(11)：3635-3641,7.DOI:10.11817/j.issn.1672-7207.2016.11.003
金属热还原法制备V-Ti基合金的动力学研究
Kinetic study on preparation of V-Ti based alloys by metallothermic reduction method
摘要
Abstract
The DSC curves were tested to study the exothermic processes of different reaction systems, and the kinetic parameters of the relevant reactions were calculated using Freeman-Carroll method. The results show that Al(liquid) reacts with V2O5(liquid) below 1 000 ℃. However Al(liquid)-TiO2(solid) reaction occurs obviously only when the temperature is higher than 1 100 ℃. If Al-Ca alloy is used as the reducing agent, the thermal reactions appear in advance, and the calcium thermal reductions occur earlier than the thermite reactions. The apparent activation energy of the Al-TiO2 reactions are notably larger than that of Al-V2O5 reactions, and the reaction rates of Al-TiO2 reactions are more sensitive to the temperature. Adding some CaO to Al-TiO2-V2O5 reaction system can reduce the apparent activation energy of the Al-TiO2 reaction, but it can also increase the apparent activation energy of the Al-V2O5 reaction.关键词
V-Ti基合金/金属热还原法/动力学Key words
V-Ti based alloy/metallothermic reduction method/kinetic分类
矿业与冶金引用本文复制引用
王斌,杜金晶,刘奎仁,朱军,李林波..金属热还原法制备V-Ti基合金的动力学研究[J].中南大学学报（自然科学版）,2016,47(11):3635-3641,7.基金项目
国家自然科学基金资助项目(51404183)；西安建筑科技大学人才科技基金资助项目(RC1355)(Project(51404183) supported by the National Natural Science Foundation of China （51404183）
Project(RC1355) supported by the Fundamental Research Funds of Xi’an University of Architecture and Technology) （RC1355）
