钨及其合金的空心阴极烧结工艺研究  

Research on Sintering Technics by Hollow Cathode Discharge for Tungsten and Its Alloy

作　　者：曹翠华[1] 王从曾[1] 马捷[1] 秦艳[1] 

机构地区：[1]北京工业大学材料科学与工程学院,北京100124

出　　处：《热加工工艺》2009年第10期22-24,28,共4页Hot Working Technology

基　　金：国家"863"计划(2006AA03Z524);国家自然科学基金资助项目(50374003)

摘　　要：采用空心阴极等离子烧结方法进行了钨及其合金的烧结机理和工艺研究。结果表明,空心阴极烧结的纯钨试样组织致密、表面光滑,密度可达17.8g/cm3以上;空心阴极烧结铈钨试样时,由于CeO2在烧结过程中的挥发,影响了空心阴极放电的稳定性,需要仔细控制工艺过程,进而进行保温烧结。The mechanism and technics of hollow cathode sintefing for tungsten and its alloy were researched. The results show that the sintered sample has the characteristic of compact structure, slick surface and good performance. The density of pure tungsten sample is up to 17.8g/cm^3. When the Ce-W sample is sintered, it is important to control the process because of volatilizing by CeO2, which has an effect on stability of discharging by hollow cathode. Then the sample can get heat preservation.

关 键 词：空心阴极 等离子 烧结 钨 

分 类 号：TG146.411[一般工业技术—材料科学与工程] TF124.5[金属学及工艺—金属材料]