硫酸钙晶须表面化学镀银的研究  

Preparation Studies on Silver-Coated Calcium Sulfate Whiskers by Electroless Plating

作　　者：王振杰[1] 聂登攀[1] 吴素彬[1] 刘安荣[1] 薛安[1] 耿家锐 

机构地区：[1]贵州省冶金化工研究所,贵州贵阳550002 [2]贵州省工业职业技术学院,贵州贵阳550008

出　　处：《电镀与精饰》2015年第2期1-4,共4页Plating & Finishing

基　　金：贵州省优秀青年科技人才培养计划项目(黔科合人字(2011)01号);贵州省科学技术基金(黔科合J字[2012]2259号);贵州省社会发展科技攻关项目(黔科合SY字[2013]3121号);贵州省工业攻关项目(黔科合GY字(2011)3043)

摘　　要：在碱性条件下,以聚乙烯吡咯烷酮为分散剂,采用葡萄糖还原银氨溶液在硫酸钙晶须表面镀银的方法制备了镀银硫酸钙晶须。分别用X-射线衍射仪、X-射线能谱仪和扫描电子显微镜对镀银硫酸钙晶须进行了表征,并分析了分散剂、反应温度等因素对硫酸钙晶须表面镀银效果的影响。结果表明,当银包覆量为40%时,且有分散剂聚乙烯吡咯烷酮存在和反应θ为60℃的条件下,硫酸钙晶须表面的银镀层致密度最好,其体积电阻率为0.0054Ω·cm。Silver-coated calcium sulfate whiskers were prepared by reducing silver nitrate with glucose in basic solution and using polyvinylpyrrolidone （PVP） as dispersant. The appearance and the component of silver-coated calcium sulfate whiskers were analyzed by XRD, EDS and SEM. The influences of dispersant and temperature on the properties were investigated, such as the compactness of Ag-plating film and the resistivity of products. The results showed that ： silver deposited on calcium sulfate whiskers was uniform and compact,and the conductivity of products was 5.4x 10 -3 Ω. cm with 40% content of sliver,60 ℃ of the reaction temperature and PVP as disnersant.

关 键 词：硫酸钙晶须 化学镀银 电阻率 葡萄糖 

分 类 号：TQ153.16[化学工程—电化学工业]