摘要
采用机械合金化、冷等静压成型、烧结、热挤压等粉末冶金技术集成的方法制备Ag/SnO2(12)材料,并对其组织与性能进行研究。研究结果表明:通过机械合金化的方法获得的Ag/SnO2(12)复合粉末,粉末颗粒形状不规则,为多层片状银的叠加,粒径的范围在20～50μm,SnO2颗粒细小且均匀弥散镶嵌于Ag基体中;Ag/SnO2(12)复合材料中SnO2颗粒细小,组织均匀,力学性能良好,但由于材料采用粉末冶金方法制备,不可避免的存在少量的孔隙,从而影响了材料的电学性能,电阻率偏高;其断口形貌为解理脆性断裂(宏观)和准解理断裂(微观)的综合。
The Ag/SnO2(12) composites were prepared by powder metallurgy technology including mechanical alloying,cold isostat-ic pressing,sintering and hot extrusion processing.The microstructure and properties were studied.The results showed that the powder of Ag/SnO2(12) with irregular shape prepared by mechanical alloying was gripped block of lamellar-type silver powder,the particle size was 20 to 50 μm,and the fine SnO2 powder was uniformly dispersed in the silver matrix.The Ag/SnO2(12) composites had hom-ogeneou...
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2010年第4期537-541,共5页
Chinese Journal of Rare Metals
基金
国家院所专项基金项目(2008EG115060)资助
