W-Ni-Sr电极材料固-液掺杂法制备工艺研究  

The Preparation Process of W-Ni-Sr Electrode Material by Solid-liquid Doping Method

作　　者：唐亮亮[1,2] 张保红 熊宁[1,2] 林冰涛 弓艳飞[1,2] 张蕾 TANG Liangliang;ZHANG Baohong;XIONG Ning;LIN Bintao;GONG Yanfei;ZHANG Lei(Advanced Technology and Materials Co.,Ltd.,Beijing 100081,China;ATTL(Beijing)Advanced Materials Co.,Ltd.,Beijing 100094,China)

机构地区：[1]安泰科技股份有限公司,北京100081 [2]安泰天龙(北京)钨钼科技有限公司,北京100094

出　　处：《中国钨业》2022年第1期33-41,共9页China Tungsten Industry

摘　　要：采用了固-液掺杂法制备W-Ni-Sr电极材料,研究了复合粉的成分、形貌/物相,以及材料的烧结工艺对材料微观组织的影响,对比了固-固掺杂法制备W-Ni-Sr电极材料的组织和硬度、电导率和热导率,探讨了钨合金电极材料的优化方向。结果表明:固-液掺杂法制备的W-Ni-Sr复合粉,大部分颗粒大小在1μm以下,Ni和Sr元素在其中分布比较均匀。复合粉具有较好的烧结性能,烧结后钨酸盐均匀弥散分布在钨晶界和晶内,阻碍了晶粒的长大,电极材料的晶粒细小。固-液掺杂比固-固掺杂所制备的钨合金电极材料组织更均匀、细小,性能更好。The W-Ni-Sr tungsten alloy electrode materials were prepared by the solid-liquid doping method.The composition,morphology and phase of the composite powder,as well as the sintering process and sintering structure of the materials were studied.The microstructure,hardness,electrical conductivity and thermal conductivity were compared with the materials prepared by solid-solid doping method,and the optimization of tungsten alloy electrode materials was discussed.In the results,the W-Ni-Sr composite powder prepared by solid-liquid doping method was fine and most of the particle size was less than 1μm.The Ni and Sr elements were distributed uniformly in the powder.The composite powder has good sintering performance.After sintering,the tungstate particles dispersed in the tungsten grain and the grain boundary uniformly,which inhibited the growth of the grain size.Compared with the solid-solid doping method,the microstructure of the electrode prepared by solid-liquid doping method was more uniform and finer,and the performance was better.

关 键 词：钨合金 电极 固-液掺杂 制备工艺 

分 类 号：TG146.411[一般工业技术—材料科学与工程]