Formation mechanism of electroless plating nickel-based composite coating on highly active rare earth magnesium alloys and its corrosion resistance and adhesion performance

作     者：WANG Bo LI Jia-wei XIE Zhi-hui LIU Kang XU Tao YU Gang 王波;李佳蔚;谢治辉;刘康;徐涛;余刚

作者机构：College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410012China Chemical Synthesis and Pollution Control Key Laboratory of Sichuan ProvinceChina West Normal UniversityNanchong 637002China Central South University of Forestry and TechnologyChangsha 410004China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2024年第31卷第10期

页      面：3517-3531页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project(5227010679)supported by the National Natural Science Foundation of China 

主　　题：rare earth magnesium alloy electroless nickel plating composite coating Ag+activation active anodic oxidation film growth mechanism 

摘      要：The process of preparing anodic oxide film containing active sites and electroless nickel plating on highly active rare earth magnesium alloy was *** formation mechanism of electroless nickel plating on active anodic oxide film and the structure and properties of the composite coating were studied by several surface and electrochemical *** results showed that Ag nanograins with an average size of 10 nm were embedded into the anodic oxide film with pores of 0.1−2μ*** nanoparticles provided a catalytic site for the deposition of Ni-B alloy,and the Ni crystal nucleus was first grown in horizontal mode and then in cylindrical *** corrosion potential of the composite coating increased by 1.37 V and the corrosion current reduced two orders of magnitude due to the subsequent deposition of Ni-P *** high corrosion resistance was attributed to the misaligning of these micro defects in the three different layers and the amorphous structure of the Ni-P alloy in the outer *** findings provide a new idea for electroless nickel plating on anodic oxide film.