NdFeB磁性材料化学镀Ni-Cu-P合金耐腐蚀性研究  

Corrosion Resistance Property of Electroless Plated Ni-Cu-P Alloy Coatings on Nd Fe B Magnets Material

作　　者：王憨鹰[1] 王兆华[1] 晋宏营[1] 陈焕铭[2] WANG Hanying WANG Zhaohua JIN Hongying CHEN Huanming(Department of Energy Engineering, Yulin College, Yulin 719000, China School of Physics ＆ Electrical Information Engineering, Ningxia University, Yinchuan 750021, China)

机构地区：[1]榆林学院能源工程学院,榆林719000 [2]宁夏大学物理电气信息学院,银川750021

出　　处：《腐蚀科学与防护技术》2017年第5期527-532,共6页Corrosion Science and Protection Technology

基　　金：陕西省工业科技攻关项目(2016GY-196)~~

摘　　要：利用化学镀方法获得了4种不同Cu和P含量的Ni-Cu-P三元合金镀层。采用电化学极化曲线方法测量了Ni-Cu-P镀层的腐蚀电位、腐蚀电流密度,并对其进行了HNO3溶液腐蚀失重实验。结果表明,随镀层中Cu和P含量的不同,镀层结构分别由晶态、混晶态和非晶态组成。而且Ni-Cu-P镀层的耐腐蚀性能随镀层的微观结构的变化而变化,4种镀层中,非晶态镀层的耐腐蚀性能最好,晶态镀层的耐腐蚀性能最差。Aimed at improving corrosion resistance, four Ni-Cu-P alloy-coatings with different Cuand P-content were electroless plated on Nd Fe B magnets material. The open circuit corrosion potential and corrosion current density of Ni-Cu-P coatings were determined by electro-polarization curve, and their corrosion mass loss in HNO3 solution was also examined. Results show that depending on the variation of Cu-and P-content, the coating was crystalline, amorphous or the mixture of the two. The corrosion resistance of Ni-Cu-P coatings varied with their microstructure, among them the amorphous coating possessed the best corrosion resistance, and the crystalline coating was the worst.

关 键 词：NdFeB磁性材料 化学镀 NI-CU-P合金 耐蚀性 非晶态镀层 

分 类 号：TG153.12[金属学及工艺—热处理]