纳米氧化铝粒子对化学镀镍-磷合金晶化行为的影响  

Crystallization behavior of Al_2O_3 nano-composite coatings prepared by electroless plating

作　　者：高加强[1] 刘磊[1] 沈彬[1] 朱建华[1] 胡文彬[1] 丁文江[1] 

机构地区：[1]上海交通大学金属基复合材料国家重点实验室,上海200030

出　　处：《中国有色金属学报》2004年第1期64-68,共5页The Chinese Journal of Nonferrous Metals

基　　金：上海市科技发展基金资助项目(0159nm007)

摘　　要：通过化学复合镀制备纳米氧化铝粒子增强镍磷合金复合镀层,并对所得表面纳米复合材料进行透射电镜显微分析(TEM)、扫描电镜显微分析(SEM)、X射线衍射分析(XRD)、能谱成分分析(EADX)和示差扫描量热分析(DSC)。结果表明:纳米粒子在复合镀层中含量较高且分布均匀;所得镀层是中磷非晶态。纳米粒子使得复合镀层晶化温度降低,显微硬度值比镍磷合金镀层明显提高。在一定条件下热处理,复合镀层晶化,硬度值大幅提高。Nano-particle reinforced Ni-P matrix composites were prepared by electroless plating. It's shown that Al_2O_3 nano-particles co-deposite evenly in layers according to the results of TEM. Al_2O_3 nano-particles cause the crystallization temperature of the composites to drop, and Ni_3P precipitate after heat-treatment at 230℃ for 24h in Ni-P-Al_2O_3 coating. The microhardness of the layers increase greatly due to nano-particles, and the microhardness of Ni-P-Al_2O_3 coating is HV1193 after heat-treatment at 400℃ for an hour.

关 键 词：化学复合镀 纳米氧化铝粒子 晶化 显微硬度 化学镀 镍-磷合金 

分 类 号：TQ153.2[化学工程—电化学工业]