摘要
采用反应合成技术和传统粉末冶金技术制备银氧化锡(AgSnO2)电接触材料。对AgSnO2块体材料进行导电率测试和X射线衍射分析,对块体材料及冷拉拔的AgSnO2线材进行显微组织分析(扫描电镜、透射电镜)。研究结果表明:采用反应合成技术可以在银基体中合成尺寸细小、界面新鲜的SnO2颗粒,制备AgSnO2电接触材料;反应合成法制备的AgSnO2材料中,微米级的SnO2颗粒系由纳米级的SnO2颗粒聚集而成;反应合成法制备的AgSnO2电接触材料较传统粉末冶金法制备的AgSnO2电接触材料具有更高的导电性;采用反应合成法制备的AgSnO2电接触材料由于改变了Ag和SnO2的结合状态使材料的加工性能和导电性能同时得到改善和提高。
Silver tin oxide (AgSnO2) was fabricated using the conventional powder metallurgy (PM) and a new reactive synthesis (RS) method. Electrical conductivity measurement and X-ray diffraction analysis were carried out on bulk AgSnO2 microstructures were determined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) on the bulk AgSnO2 and its cold drawn wire. The results show that SnO2 particles with finer size and fresh interface can be formed in silver matrix as a result of the fabrication of AgSnO2 electrical contact materials by reactive synthesis. micrometer-size tin oxide particles were assembled from nanometer-scale particles during the. RS process. Compared to conventionally PM processed, AgSnO2 electrical contact materials those fabricated by the RS process have a higher conductivity. and workability as a result of a change of combination states of silver and tin oxide.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2003年第12期1053-1056,共4页
Rare Metal Materials and Engineering
基金
国家科技攻关(2001BA326C)
云南省科技攻关(2000B-03)联合资助项目
关键词
银氧化锡
电接触材料
反应合成
粉末冶金
导电率
silver tin oxide electrical contact materials
reactive synthesis
powder metallurgy
conductivity
