钛渣电铝热还原一步合成Ti-Al-xFe-ySi多元合金热力学分析  

Thermodynamic Analysis on One-step Synthesis Ti-Al-xFe-ySi Multielement Alloy by Aluminothermic Reduction

作　　者：李军[1,2] 鲁雄刚[1] 杨绍利[2] 李重河[1] 吴恩辉[2] 侯静[2] 黄平[2] 李彬彬[2] 王涛[2] 

机构地区：[1]上海大学省部共建高品质特殊钢冶金与制备国家重点实验室,上海200072 [2]攀枝花学院攀西科技创新中心,四川攀枝花617000

出　　处：《有色金属（冶炼部分）》2016年第7期54-57,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金面上项目(51174122);四川省科技支撑计划资助项目(2013GC0146);钒钛资源综合利用四川省重点实验室资助项目(YB2014004)

摘　　要：从理论上分析了钛渣铝热还原制备Ti-Al-xFe-ySi多元合金的可行性,计算并分析了钛渣中金属氧化物与铝还原过程中可能的化学反应,讨论了钛渣中氧化物还原反应顺序的优先程度。结果表明,钛渣铝热还原制备钛铝基多元合金是可行的。从热力学分析了制备的合金中可能出现的二元合金相,主要为Ti5Si3、TiAl3和TiFe,其中Ti5Si3最易生成,研究结果较好地满足了热力学分析结果,制备的合金主要物相为Al2.68Mn0.32Ti和Al3Ti0.75Fe0.25,还有少量的TiFe和Ti3SiC2相。The feasibility to produce Ti-Al-xFe-ySi mutielement alloy from titanium slag by aluminothermic reduction was theoretically analyzed.Possible chemical reactions between metallic oxide in titanium slag and aluminum were calculated and analyzed.The priority reduction degree of metallic oxide was discussed.The results show that it is feasible to produce Ti-Al-xFe-ySi mutielement alloy from titanium slag by aluminothermic reduction.Main binary alloy phase presents as Ti5 Si3,TiAl3,and TiFe from thermodynamics analysis and validated by experiments.Main phases of prepared alloy include Al2.68 Mn0.32Ti and Al3Ti0.75Fe0.25,and a small amount of TiFe and Ti3 SiC2.

关 键 词：钛渣 铝热还原 热力学 Ti-Al-xFe-ySi合金 

分 类 号：TG146.23[一般工业技术—材料科学与工程]