Comparative study on the corrosion behavior of Ti-Nb and TMA alloys for dental application in various artificial solutions

被引：69

作者：

Bai, Y. J. ^{[2
,3
]}

Wang, Y. B. ^{[1
,3
]}

Cheng, Y. ^{[3
]}

Deng, F. ^{[2
]}

Zheng, Y. F. ^{[1
,3
]}

Wei, S. C. ^{[2
,3
,4
]}

机构：

[1] Peking Univ, Coll Engn, Dept Adv Mat & Nanotechnol, Beijing 100871, Peoples R China

[2] Chongqing Med Univ, Affiliated Hosp Stomatol, Chongqing 400015, Peoples R China

[3] Peking Univ, Acad Adv Interdisciplinary Studies, Ctr Biomed Mat & Tissue Engn, Beijing 100871, Peoples R China

[4] Peking Univ, Sch & Hosp Stomatol, Beijing 100081, Peoples R China

来源：

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2011年 / 31卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Ti-Nb alloy; TMA; Corrosion; Fluoride; Artificial saliva; TITANIUM-ALLOY; FLUORIDE; RESISTANCE; MICROSTRUCTURE; PROSTHESES; TI-6AL-4V; ALBUMIN; WIRES; PH;

D O I：

10.1016/j.msec.2010.12.010

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

082905 [生物质能源与材料]; 100103 [病原生物学];

摘要：

The corrosion behavior of Ti-Nb dental alloy in artificial saliva with and without the addition of lactic acid and sodium fluoride was investigated by electrochemical techniques, with the commercial Titanium-molybdenum alloy (TMA) as a comparison. The chemical composition, microstructure and constitutional phase were characterized via energy dispersive spectrometry, optical microscope and X-ray diffraction, meanwhile the open circuit potential, electrochemical impedance spectroscopy and potentiodynamic polarization measurements were carried out to study the corrosion resistance of experimental alloys, with the corroded surface being further characterized by scanning electron microscopy and X-ray photoelectron spectroscopy. It was found that the corrosion behavior of Ti-Nb alloy was similar to those TMA alloy samples in both artificial and acidified saliva solutions, whereas statistical analysis of the electrochemical impedance spectroscopy and polarization parameters showed Ti-Nb alloy exhibited better corrosion resistance in fluoridated saliva and fluoridated acidified saliva. SEM observation indicated that TMA alloy corroded heavily than Ti-Nb alloy in fluoride containing saliva. XPS surface analysis suggested that Nb2O5 played an important role in anti-corrosion from the attack of fluoride ion. Based on the above finding, Ti-Nb alloy is believed to be suitable for the usage in certain fluoride treated dental works with excellent corrosion resistance in fluoride-containing oral media. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：702 / 711

页数：10

共 33 条

[1]

[Anonymous], 2009, BASIC ASPECT BIOCOMP

[2]

[Anonymous], 2006, ELECTROCHIM ACTA, DOI [DOI 10.1016/j.electacta.2005.02.121, DOI 10.1016/J.ELECTACTA.2005.02.121]

[3]

Electrochemical corrosion behavior of a Ti-35Nb alloy for medical prostheses [J].