TiO_(2)焙烧预处理对钙热自蔓延法制备Ti6Al4V粉体的影响  

Influence of TiO_(2) Calcination Pretreatment on Preparation of Ti6Al4V Alloy Powder by Calciothermic Self-propagating Method

作　　者：闫基森 豆志河 张廷安 YAN Jisen;DOU Zhihe;ZHANG Ting'an(School of Metallurgy,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学冶金学院,沈阳110819

出　　处：《材料导报》2022年第17期86-90,共5页Materials Reports

基　　金：国家自然科学基金(U1908225,52174333);中央高校基本科研业务费专项资金(N2025004)。

摘　　要：以Ca为还原剂,TiO_(2)、V_(2)O_(5)和Al为原料,通过钙热自蔓延的方式制备低氧Ti6Al4V合金粉体。通过XRD、SEM-EDS、ICP以及氧氮氢分析仪等手段考察不同焙烧温度下TiO_(2)的晶粒尺寸和比表面积的变化规律,以及不同焙烧温度对Ti6Al4V粉体产物的影响。结果表明:通过调节TiO_(2)的焙烧温度可以改变TiO_(2)的晶粒尺寸和比表面积,从而影响混料的均匀程度和反应时O_(2)^(-)的迁移路程,达到降低产物中氧含量的目的。当使用1000℃焙烧过的TiO_(2)作为原料时,可得到氧含量为0.187%(质量分数,下同)的产物(Al 6.62%,V 4.22%,Ca 0.032%)。Low-oxygen Ti6Al4V alloy powder was prepared by calciothermic self-propagation method with Ca as reducing agent and TiO_(2),V_(2)O_(5) and Al as raw materials.XRD,SEM-EDS,ICP and oxygen nitrogen hydrogen analyzer were used to investigate the changes of grain size and specific surface area of TiO_(2) at different calcination temperatures,as well as the effects of different calcination temperatures on the products of Ti6Al4V powder.The results show that the grain size and specific surface area of TiO_(2) can be changed by adjusting the calcination temperature of TiO_(2),which affects the uniformity of the mixture and the moving path of O_(2)^(-)during the reaction,so as to reduce the oxygen content in the product.When TiO_(2) calcined at 1000℃is used as raw material,the production with an oxygen content of 0.187%(mass fraction)can be obtained(Al:6.62%,V:4.22%,Ca:0.032%).

关 键 词：自蔓延反应 TI6AL4V 酸洗 焙烧 

分 类 号：TG146.23[一般工业技术—材料科学与工程]