固液反应球磨制备W-Al金属间化合物  

Fabrication of W-Al Intermetallic Compound by Solid-liquid Reaction Milling

作　　者：陈长[1] 傅定发[1] 陈振华[1] 

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082

出　　处：《矿冶工程》2007年第6期79-81,共3页Mining and Metallurgical Engineering

基　　金：国家自然科学基金资助项目(50304008)

摘　　要：通过W棒对液态金属Al在不同温度及时间内球磨,制备了W-Al金属间化合物。采用X射线和扫描电镜及透射电镜等分析手段分析产物特征。结果表明,在球料比为14∶1,转速为80 r/min的条件下,用W棒对液态Al进行不同时间及温度的液态球磨后,得到了不同的金属间化合物粉末。在953 K时得到金属间化合物粉末为Al12W和Al5W,1 023 K时产物为Al5W,1163 K时产物为Al4W。采用固液反应球磨技术在高温下可以形成粒度为50 nm,甚至达到纳米级的金属间化合物粉末。W-Al intermetallic compound is prepared by milling liquid metal Al with W rods at different temperatures and for different time.The product characteristics are analyzed by X-ray diffraction,scanning electron microscopy and transmission electron microscopy.The results indicate that different intermetallic compound powders are obtained by milling molten Al with W rods at a ratio of rod to Al of 14∶1,a rotating speed of 80 r/min and different temperatures and for different time.The powders of Al12W and Al5W are formed at 953 K;Al5W, at 1023 K;and Al4W,at 1163 K.The intermetallic compound powders with particle size of 50 nm,even nanoscale powders,can be produced by solid-liquid reaction milling at high temperature.

关 键 词：金属间化合物 机械力化学 固液反应球磨 纳米粉末 制备 

分 类 号：TB383[一般工业技术—材料科学与工程]