Electrochemical corrosion behavior of Ti-24Nb-4Zr-8Sn alloy in a simulated physiological environment

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	Electrochemical corrosion behavior of Ti-24Nb-4Zr-8Sn alloy in a simulated physiological environment
	Y. Bai; S. J. Li; F. Prima; Y. L. Hao; R. Yang
	2012
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	258 期号:8 页码:4035-4040
摘要	Electrochemical corrosion behavior of a biomedical titanium alloy Ti-24Nb-4Zr-8Sn in weight percent was investigated in a phosphate buffered saline solution at 37 degrees C utilizing open-circuit potential, potentio-dynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. Both commercially pure titanium and Ti-6Al-4V alloy were also investigated to make a comparison. The results show that all the samples were spontaneously passivated once immersion into the electrolyte. Ti-24Nb-4Zr-8Sn alloy exhibited a much wider passive region compared with pure titanium and Ti-6Al-4V and also relatively low corrosion current density which is comparable to that of pure titanium in the buffered saline solution, which was attributed to a stable passive film mainly consisted of titanium oxide and niobium oxide on its surface. The EIS results indicated the presence of a single passive layer with thickness similar to 2 nm for Ti-24Nb-4Zr-8Sn and pure titanium but a duplex film consisting an inner barrier layer and an outer porous layer on Ti-6Al-4V alloy with thickness of similar to 3 nm and similar to 2.5 nm, respectively. (C) 2011 Elsevier B.V. All rights reserved.
部门归属	[bai, y.; li, s. j.; hao, y. l.; yang, r.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [prima, f.] enscp, lab phys chim surfaces, cnrs umr 7045, grp met struct, f-75231 paris 05, france.;hao, yl (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china.;ylhao@imr.ac.cn
关键词	Titanium Alloy Polarization Eis Passive Film Acidic Fluoride Solution Impedance Spectroscopy Titanium-alloys Body-fluid Biomedical Applications Metallic Biomaterials Passive Film Oxide Films Nb Alloys In-vitro
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/59887
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Bai,S. J. Li,F. Prima,et al. Electrochemical corrosion behavior of Ti-24Nb-4Zr-8Sn alloy in a simulated physiological environment[J]. Applied Surface Science,2012,258(8):4035-4040.
APA	Y. Bai,S. J. Li,F. Prima,Y. L. Hao,&R. Yang.(2012).Electrochemical corrosion behavior of Ti-24Nb-4Zr-8Sn alloy in a simulated physiological environment.Applied Surface Science,258(8),4035-4040.
MLA	Y. Bai,et al."Electrochemical corrosion behavior of Ti-24Nb-4Zr-8Sn alloy in a simulated physiological environment".Applied Surface Science 258.8(2012):4035-4040.