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.
作者
王憨鹰
王兆华
晋宏营
陈焕铭
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)
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
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)~~
关键词
NdFeB磁性材料
化学镀
NI-CU-P合金
耐蚀性
非晶态镀层
NdFeB permanent magnets material, electroless plating, Ni-Cu-P alloy, corrosionresistance, non-crystal plating layer
