Mo doped DLC nanocomposite coatings with improved mechanical and blood compatibility properties

被引：47
作者：
Tang, X. S. [1 ,2 ]
Wang, H. J. [1 ]
Feng, L. [1 ]
Shao, L. X. [1 ,2 ]
Zou, C. W. [1 ,2 ]
机构：
[1] Zhanjiang Normal Univ, Sch Phys Sci & Technol, Zhanjiang 524048, Peoples R China
[2] Univ Guangdong, Dev Ctr New Mat Engn & Technol, Zhanjiang 524048, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2014年 / 311卷
基金：
中国国家自然科学基金;
关键词：
Mo-DLC; Hardness; Tribological properties; Blood compatibility; DIAMOND-LIKE CARBON; TIC/A-C NANOCOMPOSITE; ION-IMPLANTATION; THIN-FILMS; MICROSTRUCTURE; DEPOSITION; TITANIUM; BEHAVIOR; HEMOCOMPATIBILITY; BIOMATERIALS;
D O I：
10.1016/j.apsusc.2014.05.155
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：
Mo (molybdenum) doped diamond like carbon (Mo-DLC) coatings with improved mechanical and blood compatibility properties were deposited by closed field unbalanced magnetron sputtering. The undoped and Mo-doped DLC coatings were analyzed by various characterization techniques such as Raman spectra, Atomic force microscopy, and temperature-dependent frictional wear testing. The results showed that the Mo-DLC coating with low Mo concentration was a effective protective coating with reduced residual stress and increased cohesive strength, and kept good wear resistance at the ambient temperature of 500 degrees C. The blood compatibility of Mo-DLC coatings was investigated by platelet adhesion. The results showed that the amount of thrombus on the Mo-DLC nanocomposite coatings was much less than that of thrombus on pyrolytic carbon films. The Mo-DLC nanocomposite coatings would be a new kind of promising materials applied to artificial heart valve and endovascula stent. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：758 / 762
页数：5
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