通过多级深度还原制备Ti6Al4V合金粉体的新工艺  

New Preparation Method for Ti6Al4V Powder by Multistage Depth Reduction Process

作　　者：闫基森 豆志河[1] 张廷安[1] 范世钢 牛丽萍[1] Yan Jisen;Dou Zhihe;Zhang Tingan;Fan Shigang;Niu Liping(Key Laboratory for Ecological Metallurgy of Multimetallic Mineral,Ministry of Education,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学多金属共生矿生态化冶金教育部重点实验室,辽宁沈阳110819

出　　处：《稀有金属材料与工程》2021年第9期3094-3101,共8页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China (U1908225, U1702253);Fundamental Research Funds for the Central Universities (N182515007,N170908001, N2025004)

摘　　要：介绍了一种以TiO_(2)、V_(2)O_(5)和Al为原料,Mg和Ca作为还原剂的通过多级深度还原法制备Ti6Al4V合金粉体的新方法。与传统的冶金方法制备Ti6Al4V粉末相比,该方法具有更高的生产效率和更少的环境污染。自蔓延初级还原实验的结果表明,Mg比Ca更适合在此阶段作为还原剂,当使用Mg作为还原剂时可以得到氧含量为6.74%~16.4%(质量分数,下同)的多孔Ti-Al-V-O前驱体。通过进一步的钙热深度还原(1173 K下保持3.5 h)可以得到含氧量为0.24%的Ti6Al4V粉体。Using TiO_(2),V_(2)O_(5),and Al as raw materials and Mg and Ca as reducing agents,a novel method for preparing Ti6Al4V alloy powder through multistage deep reduction process was introduced.This new process has higher productivity and less pollution than traditional metallurgical process does.The results of self-propagating primary reduction experiments show that Mg is a more suitable reducing agent than Ca in the specific stage,and the porous Ti-Al-V-O precursor material with 6.74wt%~16.4wt%oxygen can be obtained when the amount of reducing agent Mg is appropriate.The Ti6Al4V powder with 0.24wt%oxygen can be obtained after the further calciothermic deep reduction(holding at 1173 K for 3.5 h).

关 键 词：多级深度还原 自蔓延 酸洗 Ti6Al4V合金粉体 

分 类 号：TG146.23[一般工业技术—材料科学与工程]