硝酸铈对Ni-Co-P镀层组织结构和性能的影响  

Effect of Cerium Nitrate on Structure and Properties of Electroless Ni-Co-P Alloy Coating

作　　者：孙华[1] 马洪芳[1] 郭晓斐[1] 冯立明[1] 王玥[1] 蔡元兴[1] 

机构地区：[1]山东建筑大学材料科学与工程学院,山东济南250101

出　　处：《中国稀土学报》2014年第2期228-233,共6页Journal of the Chinese Society of Rare Earths

基　　金：山东省科技攻关项目(2009GG20003014);山西省自然科学基金项目(ZR2010EM062)资助

摘　　要：在Ni-Co-P化学镀液中添加硝酸铈,研究硝酸铈对Ni-Co-P镀层组织结构和性能的影响。利用扫描电子显微镜、X射线衍射仪、电化学工作站和显微硬度计,与常规化学镀层进行比较,观察和分析了硝酸铈对化学镀Ni-Co-P镀速、镀层形貌、结构、硬度和耐蚀性的影响。实验结果表明:采用添加硝酸铈的镀液施镀后,获得的Ni-Co-P镀层均匀致密,耐蚀性提高。镀层XRD衍射出现尖锐状衍射峰,呈微晶衍射特征。500℃热处理后,Ni-Co-P合金镀层完全转变成晶态,产生硬化相Ni3P。500℃热处理后,镀层硬度明显提高。In a chemical plating solution of Co-Ni-P, cerium nitrate was added to study the influence of cerium hitrate of Co-Ni-P on organizational structure and the hardness of coating. By electron energy spectrometer, X-ray diffractometer, transmission electron microscopy and micro-hardometer, compared with the normalcy chemical plating,the depositing speed of electroless Ni-Co-P plating baths, chemical composition, crystal structure and microhardness of the alloy coatings were analyzed. The experimental results showed that the adding cerium nitrate solution after plating, the Co-Ni-P deposited evenly dense, with high phosphorus content in the coating. The coating appeared sharp XRD peaks, and crystal diffraction characteristics. At 500℃ after heat treatment, the coating hardness and corrosion resistance were improved obviously.

关 键 词：化学镀 硝酸铈 硬度 结构 性能 耐蚀性 

分 类 号：TQ153.2[化学工程—电化学工业]