Effect of Microstructures on Corrosion Behavior of Nickel Coatings:(Ⅱ) Competitive Effect of Grain Size and Twins Density 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 EducationHarbin 150001China Laboratory for Corrosion and ProtectionInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016China Corrosion and Protection CenterUniversity of Science and Technology BeijingBeijing 100083China 

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

年 卷 期：2016年第32卷第5期

页      面：465-469页

核心收录：

学科分类：080503[工学-材料加工工程] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：the 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,No.HEUCF20151011) Ministry of Education(No.HEUCF20151011) 

主　　题：Nanocrystalline Corrosion properties Annealing twins Grain sizes 

摘      要：Nanocrystalline nickel coatings with grain size of 50 nm were annealed in vacuum at 200 ℃ and 400 ℃ for 10 min, Their microstructures were investigated by transmission electron microscopy （TEM）. And their corrosion behaviors were studied by means of polarization and electrochemical impedance spectroscopy （EIS）, The results showed that their grain size grew up to about 60 nm （200 ℃） and 500 nm （400 ℃）, respectively, The specimen annealed at 200 ℃ possessed higher density of twins in compared with the counterparts of as-deposited and annealed at 400 ℃, The normal grain size effect on the corrosion behavior was not observed, However, it was found that the corrosion resistance of the coating linearly changed with the density of twins.