Influence of titanium or aluminum doping on the electrochemical properties of CrN coatings in artificial seawater

被引：63

作者：

Kong, Ji-Zhou ^{[1
,2
,3
]}

Hou, Tian-Jiao ^{[2
,3
]}

Wang, Qian-Zhi ^{[1
,2
,3
]}

Yin, Liang ^{[2
,3
]}

Zhou, Fei ^{[1
,2
,3
]}

Zhou, Zhi-Feng ^{[4
]}

Li, Lawrence Kwok-Yan ^{[4
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, 29 Yudao St, Nanjing 210016, Jiangsu, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, Coll Mech & Elect Engn, Nanjing 210016, Jiangsu, Peoples R China

[3] Jiangsu Precis & Micromfg Technol Lab, Nanjing 210016, Jiangsu, Peoples R China

[4] City Univ Hong Kong, Dept Mech & Biomed Engn, Adv Coatings Appl Res Lab, 83 Tat Chee Ave, Kowloon, Hong Kong, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2016年 / 307卷

基金：

中国国家自然科学基金;

关键词：

CrN coating; Doping; Electrochemical properties; Hydration; Polarization; AMORPHOUS-CARBON COATINGS; SIMULATED BODY-FLUID; MECHANICAL-PROPERTIES; CORROSION-RESISTANCE; MULTILAYER COATINGS; TRIBOLOGICAL PROPERTIES; STAINLESS-STEEL; HARD COATINGS; N COATINGS; THIN-FILMS;

D O I：

10.1016/j.surfcoat.2016.08.036

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

CrN, CrTiN and CrAlN coatings were deposited on Si (100) via co-sputtering chromium, titanium and aluminum targets by using unbalanced magnetron sputtering, respectively. And the relevant microstructure and composition were characterized. The influences of the doping elements on the microstructural and electrochemical properties of CrN coatings in the artificial seawater were analyzed via the open circuit potential (OCP), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization tests. As a result, the CrN coating exhibits the favorable corrosion resistance. On the contrary, the easy occurrence of hydration reaction for AlN would lower the compactness of CrAlN, subsequently deteriorate its corrosion resistance. Thus, the CrAlN coating presents the worst electrochemical properties in spite of its highest electrical resistivity. In particular, the CrTiN coating exhibits the outstanding corrosion resistance with relatively higher charge transfer resistance (R-ct), polarization resistance (R-P) due to its great compactness. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：118 / 124

页数：7

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