钨粉分级及其在M型阴极上的应用  

The Tungsten Powder Grading and its Application on M-type Cathodes

作　　者：阴生毅[1] 王宇[1] 王欣欣[1] 

机构地区：[1]中国科学院高功率微波源与技术重点实验室,北京100190

出　　处：《中国钨业》2010年第2期31-33,共3页China Tungsten Industry

基　　金：国家自然科学基金项目(60871053)

摘　　要：为解决超细钨粉导致阴极用钨海绵体闭孔率偏高的问题,对钨粉的射流分级技术进行了研究。结果表明,与未分级相比采用射流分级方法可有效去除微米级钨粉中的超细钨粉,所制备的海绵体的闭孔率较分级前下降约60%,后续制备M型阴极的合格率从40%～60%提高至90%以上。In order to solve the problem that the ultra fine tungsten powder causes closed pores in sponges used for cathodes,the efflux grading technology of tungsten powder has been studied.The result shows,compared with no grading,the ultra fine particles can be get rid of effectively,closed porosity of the tungsten sponge can drop by about 60 %,and the qualification rate of M-type cathodes can be improved from 40 %～60 % to more than 90 %.

关 键 词：钨粉 分级 钨海绵 M型阴极 

分 类 号：TF123[冶金工程—粉末冶金]