The estimation of corrosion behavior of new TiNbTaZr alloys for biomedical applications

被引：18
作者：
Barbinta, A. C. [1 ]
Mareci, D. [2 ]
Chelariu, R. [3 ]
Bolat, G. [2 ]
Munteanu, C. [1 ]
Cho, K. [4 ]
Niinomi, M. [4 ]
机构：
[1] Gheorghe Asachi Tech Univ Iasi, Fac Mech Engn, Iasi 700050, Romania
[2] Gheorghe Asachi Tech Univ Iasi, Fac Chem Engn & Environm Protect, Iasi 700050, Romania
[3] Gheorghe Asachi Tech Univ Iasi, Fac Mat Sci & Engn, Iasi 700050, Romania
[4] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2014年 / 65卷 / 10期
关键词：
TI-TA ALLOYS; IN-VITRO CORROSION; ELECTROCHEMICAL-BEHAVIOR; TI-6AL-7NB ALLOY; TITANIUM; FILM; RESISTANCE; EIS; TANTALUM; XPS;
D O I：
10.1002/maco.201307294
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The corrosion behavior of two TiNbTaZr alloys (Ti25Nb8Ta10Zr and Ti21Nb15Ta6Zr) in Dulbecco's minimum essential medium (MEM) are evaluated and its protective ability is compared with that of Cp-Ti, to ascertain their stability for biomedical application. All the samples were examined using electrochemical techniques: electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curves. The electrochemical corrosion parameters obtained from the EIS and potentiodynamic polarization curves indicated a typical passive behavior for TiNbTaZr alloys. In addition, scanning electron microscopy was employed to observe the surface morphology after polarization test in MEM solution. Low anodic current density values were obtained from the polarization curves, indicating a typical passive behavior for TiNbTaZr alloys. EIS studies showed high impedance values for all samples, increasing with exposure time. The Ti21Nb15Ta6Zr alloy appears to possess superior corrosion resistance than the Ti25Nb8Ta10Zr alloy and Cp-Ti in MEM solution.
引用
收藏
页码：1017 / 1023
页数：7
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