气雾化制备TiSi_(2)球形合金粉末及其性能研究  

Preparation and properties of TiSi_(2) spherical alloy powder by atomization

作　　者：赵少阳[1] 沈垒 殷京瓯[1] 李增峰[1] ZHAO Shaoyang;SHEN Lei;YIN Jin′ou;LI Zengfeng(State Key Laboratory of Porous Metal Materials,Northwest Institute for Non-Ferrous Metal Research,Xi'an 710016,China)

机构地区：[1]西北有色金属研究院金属多孔材料国家重点实验室,陕西西安710016

出　　处：《粉末冶金工业》2024年第6期101-105,共5页Powder Metallurgy Industry

基　　金：陕西省重点研发计划资助项目(2021GY-234)

摘　　要：将0级海绵钛颗粒和结晶硅按照Ti-52Si(质量分数,%)的成分进行配比作为原料装入水冷铜坩埚中,经过中频感应加热熔炼-高压气体雾化-冷却等流程制备出球形TiSi_(2)粉末。对粉末的物理性能、表面形貌、物相含量等进行测定和分析表征。结果表明,本研究制备的TiSi_(2)球形粉末尺寸主要集中在15~150μm之间,粉末尺寸小于150μm的收率大于95%;TiSi_(2)合金粉末和TiSi_(2)凝壳主要以C49相为主,因冷却速率极快,未出现C54相;随着粉末粒径减小,粉末表面凝固组织逐渐细化。Grade 0 titanium sponge particles and crystalline silicon were mixed into a water-cooled copper crucible as raw materials according to the composition of Ti-52Si(wt.%),and spherical TiSi_(2) powder was prepared by intermediate frequency induction heating and smelting-high-pressure gas atomization-cooling.The physical properties,surface morphology,and phase content of the powder were determined and analyzed.The results show that the size of the TiSi_(2) spherical powder prepared in this study is mainly distributed between 15~150μm,and the yield of the powder size less than 150μm was>95%.The TiSi_(2) alloy powder and TiSi_(2) condensate shell are mainly C49 phase,and the C54 phase does not appear due to the extremely fast cooling rate.As the particle size of the powder decreases,the solidified structure on the surface of the powder is gradually refined.

关 键 词：气雾化 真空感应熔炼 TiSi_(2)粉末 显微组织 靶材镀膜 

分 类 号：TF123.112[冶金工程—粉末冶金]