摘要
Ag-SnO2是各国电接触材料研究人员近年来新开发的一种无镉新型触头材料,它具有较好的导电导热性,优良的耐热性、抗电弧烧蚀性和抗熔焊性,是目前代替Ag-CdO的最理想材料。本文通过合金粉末预氧化法、复合粉体改性处理技术来制备Ag-SnO2-Y2O3电接触材料,添加稀土后合金粉末容易氧化,氧化粉体经改性处理后可有效改善氧化物颗粒与银基体间的润湿性、改善材料的后续加工性能,并且所制备的Ag-SnO2-Y2O3材料密度高、组织均匀、不存在宏观偏析,SnO2和Y2O3颗粒在材料中弥散均匀分布。
Ag-SnO_2 is a kind of new contact material without Cd developed in many countries in recent years. It has better electric-conduct and heat-conduct property, excellent heat-resistance, good arc erosion-resistance and good weld-resistance properties. So it is the optimum material replacing Ag-CdO. Ag-SnO_2-Y_2O_3 contact material is prepared by alloy powder internal oxidation and modification of composite powders. The outcome shows that AgSn_5Y alloy powder is oxidized easily by adding Y; modification of powd...
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2005年第4期448-451,共4页
Chinese Journal of Rare Metals
基金
中国科技部科研院所专项基金资助项目(2003EG115031)
关键词
预氧化
银氧化锡
电接触材料
组织性能
稀土
pre-oxidation
Ag-SnO_2
electrical contact materials
microstructure and property
rare earths