Effect of Microstructures on Corrosion Behavior of Nickel Coatings:(Ⅰ) Abnormal Grain Size Effect on Corrosion Behavior

作     者：Guozhe Meng Yang Li Yawei Shao Tao Zhang Yanqiu Wang Fuhui Wang Xuequn Cheng Chaofang Dong Xiaogang Li 

作者机构：Corrosion and Protection LaboratoryKey Laboratory of Superlight Materials and Surface Technology (Harbin Engineering University)Ministry of Education Laboratory for Corrosion and ProtectionInstitute of Metal ResearchChinese Academy of Sciences Corrosion and Protection CenterUniversity of Science and Technology Beijing 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2015年第31卷第12期

页      面：1186-1192页

核心收录：

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

基　　金：financial support from the National Basic Research Program of China (No.2014CB643301) the National Natural Science Foundation of China (Nos.50971050 and 51001036) the Program for New Century Excellent Talents in University (No.NCET-11-0575) the Ministry of Science and Technology of the People’s Republic of China (No.2012FY113000 the Key Laboratory of Superlight Materials and Surface Technology (Harbin Engineering University) Ministry of Education (HEUCF20151011) 

主　　题：Nanocrystalline Pulse jet electrodeposition Corrosion Grain size Growth twins 

摘      要：Nickel coatings with different microstructures were synthesized by pulse jet electrodeposition *** morphology and microstructure were investigated by scanning electron microscopy（SEM）and transmission electron microscopy（TEM）.The corrosion property of the coatings was studied by using polarization,electrochemical impedance spectroscopy（EIS）,potential of zero free charge（PZFC） measurements and Mott-Schottky（M-S） *** results showed that the coating with grain size of 50 nm possessed higher corrosion resistance than that with grain size of 10 *** abnormal behavior may be related to the existence of nanoscale twins in the coatings and the lower concentration of acceptor in the passive films.