Corrosion behavior of DLC-coated NiTi alloy in the presence of serum proteins

被引：25
|
作者：
Hang, Ruiqiang [1 ]
Ma, Shengli [1 ]
Chu, Paul K. [2 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
[2] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China
来源：
DIAMOND AND RELATED MATERIALS | 2010年 / 19卷 / 10期
关键词：
Nickel-titanium; Diamond-like carbon; Corrosion; Proteins; ADSORPTION BEHAVIOR; BOVINE SERUM; CARBON DLC; SURFACE; ALBUMIN; PERFORMANCE; COATINGS; BIOMATERIALS; ENHANCEMENT; TITANIUM;
D O I：
10.1016/j.diamond.2010.06.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Uniform and adherent diamond-like carbon (DLC) coatings are deposited on NiTi alloy by arc enhanced magnetron sputtering (AEMS). The effects of serum proteins, bovine serum albumin (BSA) and fibrinogen (Fib) on the corrosion behavior of DLC-coated NiTi alloy in phosphate buffer saline (PBS) solution are investigated at 37 C using open circuit potential (OCP), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements. The results show that DLC coatings, which enhance the corrosion resistance of the NiTi alloy especially in the presence of BSA, move the OCP to the positive direction, increase the polarization resistance, lower the corrosion current density, and enhance the breakdown potential. The presence of fibrinogen shows the similar effect but less notable than BSA. The associated mechanism is also discussed. (c) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：1230 / 1234
页数：5
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