Electrochemical performance of TiCN coatings with low carbon concentration in simulated body fluid

被引：17
|
作者：
Wang, Qianzhi [1 ,2 ,3 ]
Zhou, Fei [1 ,2 ,3 ]
Zhou, Zhifeng [5 ]
Li, Lawrence Kwok-Yan [5 ]
Yan, Jiwang [4 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Jiangsu, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Coll Mech & Elect Engn, Nanjing 210016, Jiangsu, Peoples R China
[3] Jiangsu Key Lab Precis & Micromfg Technol, Nanjing 210016, Jiangsu, Peoples R China
[4] Keio Univ, Fac Sci & Technol, Dept Mech Engn, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan
[5] City Univ Hong Kong, Dept Mech & Biomed Engn, Adv Coatings Appl Res Lab, Kowloon, Hong Kong, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2014年 / 253卷
基金：
中国国家自然科学基金;
关键词：
Sputtered coatings; Electrochemistry; Impedance; Polarization; Simulated body fluid; 316L STAINLESS-STEEL; IMMERSION ION-IMPLANTATION; CORROSION-RESISTANCE; TRIBOLOGICAL PROPERTIES; IMPEDANCE SPECTROSCOPY; DEPOSITION TECHNIQUE; FRETTING-CORROSION; FILTERED ARC; FILMS; MICROSTRUCTURE;
D O I：
10.1016/j.surfcoat.2014.05.037
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
TiCN coatings with low carbon concentrations (0.99 at.%-2.46 at.%) were deposited on Si(100) wafers via co-sputtering titanium and graphite targets by using unbalanced magnetron sputtering. The influence of carbon content on the microstructure and electrochemical properties of TiCN coatings in simulated body fluid was analyzed. The results revealed that the amorphous carbon (a-C) was absent from TiCN coatings (0.99 at.% or 2.05 at.% carbon), which exhibited favorable corrosion resistances in SBF. But the presence of a-C in TiCN coating (2.46 at.% carbon) lowered its hardness, and subsequently deteriorated its corrosion resistance in SBF. In particular, the TiCN coating with 2.05 at.% carbon presented the higher charge transfer resistance (R-ct) as compared with the TiCN coating (0.99 at% carbon) owing to more a-CNx and higher electrical resistivity. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：199 / 204
页数：6
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