Electrochemical behavior of (Ti1-xNbx)5Si3 nanocrystalline films in simulated physiological media

被引：22
作者：
Liu, Linlin [1 ]
Xu, Jiang [1 ]
Munroe, Paul [2 ]
Xu, Jiake [3 ]
Xie, Zong-Han [4 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, Nanjing 210016, Jiangsu, Peoples R China
[2] Univ New S Wales, Sch Mat Sci & Engn, Kensington, NSW 2052, Australia
[3] Univ Western Australia, Sch Pathol & Lab Med, Crawley, WA 6009, Australia
[4] Univ Adelaide, Sch Mech Engn, Adelaide, SA 5005, Australia
来源：
ACTA BIOMATERIALIA | 2014年 / 10卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Nanostructured films; Nb alloying; Corrosion; Ringer's solution; CORROSION BEHAVIOR; TITANIUM-ALLOYS; PASSIVE FILM; SILICON; AL; SI; TI; TEMPERATURE; RESISTANCE; TI-6AL-4V;
D O I：
10.1016/j.actbio.2013.09.021
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
In this paper, (Ti1-xNbx)(5)Si-3 nanocrystalline films were synthesized and their potential as highly corrosion-resistant coatings for the biomedical alloy Ti-6Al -4V was explored. To assess the electrochemical behavior of the as-deposited films, the samples were immersed in Ringer's solution open to air at 37 degrees C. The processes that govern the electrochemical reactions at the film surface were analyzed using a combination of complementary electrochemical measurement techniques such as potentiodynamic polarization, electrochemical impedance spectroscopy and Mott-Schottky analysis. The results show that the (Ti1-xNbx)(5)Si-3 nanocrystalline films offer Ti-6Al-4V a strong shield from corrosive attack and the addition of Nb in the films greatly enhances their resistance to corrosion, and in so doing, minimizes metal ion release. Collectively, our data suggest that (Ti1-xNbx)(5)Si-3 nanocrystalline films as supreme coatings with anti-corrosive properties have potential to improve the performance and extend the service life of orthopedic and cochlear implants. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1005 / 1013
页数：9
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