Bias-graded deposition and tribological properties of Ti-contained a-C gradient composite film on Ti6Al4V alloy

被引：65
作者：
Cai, J. B.
Wang, X. L. [1 ]
Bai, W. Q.
Zhao, X. Y.
Wang, T. Q.
Tu, J. P.
机构：
[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2013年 / 279卷
基金：
中国国家自然科学基金;
关键词：
Amorphous carbon; Gradient composite film; Mechanical property; Tribological property; DIAMOND-LIKE CARBON; H NANOCOMPOSITE COATINGS; MECHANICAL-PROPERTIES; AMORPHOUS-CARBON; THIN-FILMS; MICROSTRUCTURE; TITANIUM; BEHAVIOR; INDENTATION; INTERLAYER;
D O I：
10.1016/j.apsusc.2013.04.136
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Ti-contained a-C gradient composite film with a thickness 1.5 mu m was deposited on medical Ti6Al4V alloy substrate using a closed field unbalanced magnetron sputtering with bias-graded voltage through -20 V to -150 V. The mechanical and tribological properties were evaluated from nanoindentation, scratch test and ball-on-disk tribometer. Compared with the constant-bias film deposited at -150 V, the bias-graded film has the approximate hardness (19 GPa) but high toughness and adhesion strength. At a normal load of 10 N, the bias-graded composite film shows a low friction coefficient of 0.08 and wear rate of 2.89 x 10(-16)m(3)N(-1)m(-1) in ambient air. While in Hanks' solution, the film has the same low friction coefficient but low wear rate of 4.63 x 10(-17)m(3)N(-1)m(-1). Excellent wear resistance in Hanks' solution may bring about a biological application for the Ti-contained a-C gradient composite film. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：450 / 457
页数：8
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