Bias-graded deposition and tribological properties of Ti-contained a-C gradient composite film on Ti6Al4V alloy
Bias-graded deposition and tribological properties of Ti-contained a-C gradient composite film on Ti6Al4V alloy
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DOI：
10.1016/j.apsusc.2013.04.136
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发表时间：
2013-08-15
影响因子：
6.7
通讯作者：
Tu, J. P.
中科院分区：
文献类型：
--
作者：
Cai, J. B.;Wang, X. L.;Tu, J. P.
采用闭合场非平衡磁控溅射法在医用Ti6 Al 4V合金基体上制备了厚度为1.5 μ m的含Ti非晶碳梯度复合薄膜，偏压梯度为-20 ~-150 V。与-150 V恒偏压下沉积的薄膜相比，偏压梯度薄膜的硬度接近19 GPa，但具有较高的韧性和结合强度。在10 N的正常载荷下，偏压梯度复合膜在环境空气中显示出0.08的低摩擦系数和2.89 × 10（-16）m（3）N（-1）m（-1）的磨损率。在Hanks溶液中，膜的摩擦系数和磨损率均较低，为4.63 × 10 ~（-17）m ~（-3）N ~（-1）m ~（-1）。在Hanks溶液中具有良好的耐磨性，有望为含钛a-C梯度复合膜的生物应用带来希望。(C)2013爱思唯尔有限公司版权所有。
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.