Fabrication of Ti-O/Ti-N duplex coatings on biomedical titanium alloys by metal plasma immersion ion implantation and reactive plasma nitriding/oxidation

被引：64

作者：

Leng, YX

Yang, P

Chen, JY

Sun, H

Wang, J

Wang, GJ

Huang, N

Tian, XB

Chu, PK

机构：

[1] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China

[2] SW Jiaotong Univ, Dept Mat Engn, Chengdu 610031, Sichuan, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2001年 / 138卷 / 2-3期

关键词：

titanium oxide and nitride; biomedical materials; plasma implantation; plasma nitriding; plasma oxidation;

D O I：

10.1016/S0257-8972(00)01172-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ti-O/Ti-N duplex coatings were fabricated on titanium alloys by metal plasma immersion ion implantation and reactive plasma nitriding/oxidation. The purpose of Ti-O is to improve the blood compatibility, and that of Ti-N is to improve the mechanical properties. X-Ray diffraction (XRD), microhardness tests, pin-on-disk wear experiments, and platelet adhesion investigation were conducted to evaluate the properties and blood compatibility of the coatings. The results reveal that the blood compatibility of the Ti-O/Ti-N duplex coatings is better than that of low temperature isotropic pyrolytic carbon (LTIC). The microhardness of Ti-O/Ti-N duplex coatings can reach 14 GPa. The wear resistance is also much better than that of Ti6Al4V alloy.,The semiconductor nature of non-stoichiometric titanium oxide may be responsible for the observed improvement in the blood compatibility. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：296 / 300

页数：5

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