APT中掺杂Mo元素对W粉制备的影响  

Influence of doping Mo into APT on preparation of tungsten powder

作　　者：李亚蕾[1] 谭敦强[1,2] 杨欣[1] 陆磊[2] 陆德平[2] 

机构地区：[1]南昌大学材料科学与工程学院,江西南昌330031 [2]江西省科学院应用物理研究所,江西南昌330029

出　　处：《粉末冶金工业》2014年第5期8-11,共4页Powder Metallurgy Industry

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA061902);江西省钨铜新材料重点实验室开放基金项目(2011-TW-07)

摘　　要：采用APT中湿掺杂仲钼酸铵((NH4)6Mo7O24)的方法,系统研究了不同Mo掺杂量对还原W粉形貌和粒度的影响。结果表明:在还原过程中,Mo经历了MoO3→MoO2→Mo的转变过程,以单质Mo的形式存在W粉中,使含Mo的W粉表面形貌不规则;随着Mo掺杂量的增加,W粉的平均粒径不断减小。The effects of different Mo-doping on the morphology and grain size of tungsten powder were studied systematically by doping ammonium paramolybdate （（NH4）6Mo7O24） solution into APT.The results show that Mo experiences the transition process of MoO3→MoO2→Mo during the reduction process,and finally exists in the form of elemental Mo; Compared to tungsten powder without doping,the surface topography of Mo-contained tungsten powder becomes irregular; and the average grain size of tungsten powder decreases constantly with the increase of Mo doping content.

关 键 词：Mo掺杂 还原W粉 组织形貌 粒度 

分 类 号：TF123.24[冶金工程—粉末冶金]