SiC_p/Al复合材料的化学镀镍  

Electroless nickel on the surface of SiC_p/Al composites

作　　者：李丽波[1] 安茂忠[1] 武高辉[2] 

机构地区：[1]哈尔滨工业大学应用化学系,黑龙江哈尔滨150001 [2]哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150001

出　　处：《功能材料》2005年第7期1093-1096,共4页Journal of Functional Materials

基　　金：哈尔滨工业大学跨学科交叉性研究基金资助项目(HIT.MD.2002.17)

摘　　要：采用化学镀技术对高体分SiC颗粒增强铝基复合材料(SiCp/Al)表面进行改性以改善其焊接性能和抛光性能。本文探索了在SiCp/Al表面化学镀镍的预处理工艺及条件,系统分析并阐述了除油、粗化、活化等工序对化学镀镍的作用和影响,同时在最优的条件下成功地制备出光亮、均匀、完整且与基体结合良好的镍磷合金镀层。利用扫描电子显微镜(SEM)、能谱(EDAX)对镀层微观结构和成分进行表征。结果表明,预处理可以改变基体表面的结构形貌,影响镍磷合金镀层在其表面的分布,从而对镀层质量、结合强度及沉积速度起决定性作用。The technology of electroless Ni-P alloy was used to modify the surface of SiCp/Al composites in order to improve its welding and polishing properties. In the present work, the technique and conditions of the presentment have been investigated, as well as the effect of cleaning, etching and activation upon chemical nickel-phosphate plating. Also, the nickel coatings obtained in the optimization conditions are bright, even, integrity and good adhesion to the substrate. The morphology and the element component of the electroless nickel-plating coatings are observed by SEM and EDAX. The results indicate that pretreatment can alter the structure of the substrate surface and affect the distribution of the coatings on the SiCp/Al composites. Consequently, the pretreatment process was critical approach for the quality of the coating layer, the adhesion strength between the plated nickel and the substrate as well as plating rate.

关 键 词：SICP/AL复合材料 化学镀镍 预处理 沉积速度 结合强度 

分 类 号：TQ153.1[化学工程—电化学工业] TB331[一般工业技术—材料科学与工程]