多级深度还原法制备Ti6Al4V粉体中镁热自蔓延产物浸出动力学  

Leaching Kinetics of Magnesiothermic Self-propagating Products in Preparation of Ti6Al4V Powder by Multistage Deep Reduction Method

作　　者：闫基森 豆志河 张廷安 YAN Ji-sen;DOU Zhi-he;ZHANG Ting-an(School of Metallurgy,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2023年第10期1416-1423,共8页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(U1908225,U1702253,U1903129);中央高校基本科研业务费专项资金资助项目(N182515007,N170908001,N2025004).

摘　　要：对多级深度还原法制备Ti6Al4V合金粉体过程中的镁热自蔓延产物的浸出过程进行了研究,探究了原料粒度、浸出温度和盐酸浓度对浸出过程的影响.结果表明,温度和盐酸浓度对Ti的浸出率有很大的影响.Mg浸出反应的表观活化能为47.38 kJ/mol,反应级数为0.22.Ti浸出反应的表观活化能为103.4 kJ/mol,反应级数为1.142.最终选择D_(50)为59.4μm的镁热自蔓延产物作为原料,采用30℃的浸出温度和1 mol/L的盐酸作为浸出条件.经过180 min的浸出可将镁热自蔓延产物中的Mg去除92.1%,钛的损失率为17.5%.The leaching process of magnesiothermic self-propagating products in the preparation of Ti6Al4V alloy powder by multi-stage deep reduction method was studied.The effects of raw material particle size,leaching temperature and hydrochloric acid concentration on the leaching process were studied.The results show that temperature and hydrochloric acid concentration have a great influence on the leaching rate of Ti.The apparent activation energy of the Mg leaching reaction was 47.38 kJ/mol,and the reaction order was 0.22.The apparent activation energy of Ti leaching reaction was 103.4 kJ/mol,and the reaction order was 1.142.Finally,the magnesiothermic self-propagating product with D_(50)of 59.4μm was selected as the raw material,and the leaching temperature of 30℃and the hydrochloric acid of 1 mol/L were used as the leaching conditions.After 180 min of leaching,92.1%of Mg in the magnesiothermic self-propagating product can be removed,and the loss rate of titanium was 17.5%.

关 键 词：多级深度还原 酸浸 Ti6Al4V合金粉体 镁热自蔓延反应 动力学 

分 类 号：TG146.23[一般工业技术—材料科学与工程]