Deposition of a-C:H films on UHMWPE substrate and its wear-resistance
Deposition of a-C:H films on UHMWPE substrate and its wear-resistance
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UHMWPE基材上a-C:H薄膜的沉积及其耐磨性能
DOI：
10.1016/j.apsusc.2009.08.017
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发表时间：
2009-10
影响因子：
6.7
通讯作者：
Huang, Nan
中科院分区：
文献类型：
--
作者：
Leng, Y. X.;Deng, Xingrui;Xie, Dong;Liu, Hengjun;Huang, Nan
在人工髋关节置换术中，超高分子量聚乙烯（UHMWPE）磨屑被确定为限制人工关节寿命的主要因素。特别是来自关节的UHMWPE碎片可诱发组织反应和骨吸收，这可能导致关节松动。类金刚石薄膜由于其优异的摩擦学性能、生物相容性和化学惰性等优点，近年来引起了人们的极大兴趣。为了提高超高分子量聚乙烯（UHMWPE）的耐磨性，采用电子回旋共振微波等离子体化学气相沉积（ECR-PECVD）技术在UHMWPE基体上沉积a-C：H薄膜。在沉积过程中，工作气体为氩气和乙炔，微波功率设置为800 W，偏置脉冲电压设置为-200V（频率15 kHz，占空比20%），真空室中的压力设置为0.5Pa，处理时间设置为60 min。采用X射线光电子能谱（XPS）、拉曼光谱、纳米压痕、抗划伤和磨损试验对薄膜进行了分析。结果表明，在UHMWPE表面成功沉积了厚度达2μm的非晶碳氢（a-C：H）薄膜。在200μN的载荷下，经a-C：H薄膜涂覆的UHMWPE的纳米硬度从未处理UHMWPE的10 MPa提高到139 MPa。在1 N的载荷下，使用球盘摩擦磨损试验机（直径6 mm，SiC）进行了10000次循环的磨损试验，结果表明，磨损截面积从未处理的UHMWPE的193μ m2减少到DLC涂层样品的26μ m2。此外，还研究了氩气/乙炔气流量比对a-C：H薄膜生长的影响。
In prosthetic hip replacements, ultrahigh molecular weight polyethylene (UHMWPE) wear debris is identified as the main factor limiting the lifetime of the artificial joints. Especially UHMWPE debris from the joint can induce tissue reactions and bone resorption that may lead to the joint loosening. The diamond like carbon (DLC) film has attracted a great deal of interest in recent years mainly because of its excellent tribological property, biocompatibility and chemically inert property. In order to improve the wear-resistance of UHMWPE, a-C:H films were deposited on UHMWPE substrate by electron cyclotron resonance microwave plasma chemical vapor deposition (ECR-PECVD) technology. During deposition, the working gases were argon and acetylene, the microwave power was set to 800W, the biased pulsed voltage was set to −200V (frequency 15kHz, duty ratio 20%), the pressure in vacuum chamber was set to 0.5Pa, and the process time was 60min. The films were analysed by X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, nano-indentation, anti-scratch and wear test. The results showed that a typical amorphous hydrogenated carbon (a-C:H) film was successfully deposited on UHMWPE with thickness up to 2μm. The nano-hardness of the UHMWPE coated with a-C:H films, measured at an applied load of 200μN, was increased from 10 MPa (untreated UHMWPE) to 139MPa. The wear test was carried out using a ball (Ø 6mm, SiC) on disk tribometer with an applied load of 1N for 10000 cycles, and the results showed a reduction of worn cross-sectional area from 193μm2of untreated UHMWPE to 26μm2of DLC coated sample. In addition the influence of argon/acetylene gas flow ratio on the growth of a-C:H films was studied.
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影响因子：
2.1
作者：
N. Ianno;R. Dillon;Abbas Ali;Ahmad Ahmad-Ahmad
通讯作者：
N. Ianno;R. Dillon;Abbas Ali;Ahmad Ahmad-Ahmad
DOI：
10.1097/00003086-199912000-00008
发表时间：
1999-12-01
影响因子：
4.2
作者：
McKellop, H;Shen, FW;Lancaster, JG
通讯作者：
Lancaster, JG
影响因子：
4.1
作者：
CHANDRA, L;ALLEN, M;CLYNE, TW
通讯作者：
CLYNE, TW
影响因子：
5.4
作者：
X. Zhou;S. Lee;I. Bello;A. Cheung;D. Chiu;Y. Lam;Chun‐Sing Lee;K. Leung;X. M. He
通讯作者：
X. Zhou;S. Lee;I. Bello;A. Cheung;D. Chiu;Y. Lam;Chun‐Sing Lee;K. Leung;X. M. He
影响因子：
4.1
作者：
Atchison, F.;Brys, T.;Straumann, U.
通讯作者：
Straumann, U.