摘要
以未球磨与球磨条件下制备的Ag-SnO_2-In_2O_3电接触材料为研究对象,采用宏观性能与微观组织结构对比分析的研究方法,通过XRD、OA、SEM、EDS等分析手段,系统研究了不同高能球磨参数对Ag-SnO_2-In_2O_3材料性能的影响。结果表明:Ag-SnO_2-In_2O_3粉末在球磨过程中经磨球冲击、摩擦、剪切和压缩后表面氧化膜破碎,露出了高Ag含量的表面,增加了烧结时Ag-Ag接触面积,进而显著提高烧结坯的致密度、抗弯强度等力学性能。优化的球磨工艺参数为:球磨转速300r/min,球磨时间30min,球料比为10∶1。
Using Ag-SnO2-In2O3 electrical contact materials prepared with and without ball milling as the research object,the effects were systematically studied of different high-energy ball milling parameters on the properties of Ag-SnO2-In2O3 by comparative study of macroscopic performance and mierostructure and means of XRD, OA, SEM and EDS. The results show that Ag-SnO2-In2O3 powder has broken surface oxide film due to impact, friction, shearing and compression during ball milling, and its surface with high Ag con- tent is exposed, resulting in increased Ag-Ag contact area during sintering and significantly improved densi- fieation degree,bending strength and other mechanical properties of the sintered billet. The optimized ball milling parameters are as follows： ball milling speed of 300 r/min,ball milling time of 30 min and ball to powder weight ratio of 10 ： 1.
作者
徐晓燕
李波
刘心宇
刘笑
XU Xiao-yan;LI Bo;LIU Xin-yu;LIU xiao(School of Materials Science and Engineering,Guilin University of Electronic Technology,Guilin 541004,China;Guilin Electrical Equipment Scientific Research Institute,Guilin 541004,China;School of Materials Science and Engineering,Central South University,Changsha 410083,China)
出处
《稀有金属与硬质合金》
CAS
CSCD
北大核心
2018年第5期59-64,共6页
Rare Metals and Cemented Carbides
基金
广西自然科学基金(2016JJA160091)
关键词
Ag-SnO2-In2O3
电触头
高能球磨
烧结坯
致密度
抗弯强度
Ag-SnO2-In2 Oa
electrical contact
high-energy ball milling
sintered billet
densification degree
bending strength
