摘要
利用Fact Sage热力学软件和差热分析仪对铝热法制备Al V55合金的热力学过程进行了分析,结果表明:该反应可自发进行,反应的绝热燃烧温度为3 276.61K,单位热效应为4 567.06 J·g-1,属于液—液反应。研究了不同V含量对合金成品率以及单位热效应对合金钒收率的影响:对于Al V55合金,提高合金V含量可以最大程度的降低脆性相Al8V5对合金成品率的影响,所以在不隔绝空气的情况下提高合金的V含量可达到提高合金成品率的目的;单位热效应对合金钒收率影响很大,单位热效应确定为3 367 J·g-1时合金的钒收率最高,约为96.5%。
The thermodynamics for preparation of AlV55 by aluminothermic process was analyzed by Fact Sage software and differential thermal analyzer.The results show that the reaction occurs spontaneously with 3 276.61 K of adiabatic combustion temperature and 4 567.06 J·g-1 of unit thermal effect,attributed to a liquid-liquid reaction.The effect of V content on yield rate of products and influence of unit thermal effect on vanadium yield rate were also studied.It is indicated that for AlV55 alloy the elevated V content can reduce the effect of Al8V5 brittle phase and increase the yield rate of products in air atmosphere.The unit thermal effect has a significant effect on vanadium yield rate,with about 96.5% of the maximum vanadium yield rate at 3 367 J·g^-1 of the unit thermal effect.
作者
尹丹凤
孙朝晖
陈海军
王永钢
杜光超
Yin Danfeng Sun Zhaohui Chen Haijun Wang Yonggang Du Guangchao(Pangang Group Research Institute Co. , Ltd. , State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China Panzhihua Vanadium Products Factory, Pangang Group Vanadium Industry Company, Panzhihua 617023, Sichuan, China)
出处
《钢铁钒钛》
CAS
北大核心
2017年第5期42-45,共4页
Iron Steel Vanadium Titanium
关键词
钒铝合金
铝热法
热力学
钒收率
V-Al alloy, aluminothermics, thermodynamics, vanadium yield rate
