化学镀法制备Ag/Al复合粉末  

Fabricating Ag/Al composite powder by electroless silver plating

作　　者：李传友[1] 王群[1] 王澈[1] 郭红霞[1] 

机构地区：[1]北京工业大学材料科学与工程学院,北京100124

出　　处：《功能材料》2010年第9期1525-1528,共4页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2007AA06Z320)

摘　　要：通过化学镀的方法在铝粉表面包覆银,研究了铝粉化学镀银的原理,探讨了氨水、银氨离子、稳定剂、温度和pH对化学镀银的影响。结果表明氨水可以增加镀液稳定性,改善镀层形貌;银氨离子浓度对镀层银含量以及粉末电阻率影响明显;少量稳定剂可以增强镀液稳定性,过量导致镀层疏松多孔;温度和pH的提高可以增加银的析出量,但也会导致镀液的分解。Silver-coated aluminum powder was gained by electroless plating.The principle of electroless silver plating on aluminium powder was studied and the influences of ammonia,argentamine,stabilizing agent,temperature and pH value on electroless silver plating was investigated.The results show that ammonia can strength stability of plating bath and improve the micrographics of immersion silver coating,argentamine concentration has great influences on the resistivity and content of silver,little stabilizing agent can improve stability of plating bath while more stabilizing agent leads to loose silver coating layer,the temperature and pH value can increase the amount of deposited silver but bring about decomposition of plating bath.

关 键 词：化学镀银 银包铝粉 稳定剂 电阻率 银氨溶液 

分 类 号：TB331[一般工业技术—材料科学与工程] TJ763[兵器科学与技术—武器系统与运用工程]