Role of plastic deformation and microstructure in the micro-electrochemical behaviour of Ti-6Al-4V in sodium chloride solution

被引：72
作者：
Krawiec, H. [1 ]
Vignal, V. [2 ]
Schwarzenboeck, E. [2 ,3 ]
Banas, J. [1 ]
机构：
[1] AGH Univ Sci & Technol, PL-30059 Krakow, Poland
[2] Univ Bourgogne, ICB, CNRS, UMR 6303, F-21078 Dijon, France
[3] Aalen Univ Appl Sci, D-73430 Aalen, Germany
来源：
ELECTROCHIMICA ACTA | 2013年 / 104卷
关键词：
Titanium alloy; Corrosion; Local electrochemical techniques; CORROSION-RESISTANCE; RINGERS SOLUTION; PHYSIOLOGICAL SOLUTION; IMPLANT MATERIALS; TITANIUM; ALLOY; TI; SPECTROSCOPY; DEPENDENCE; IMPEDANCE;
D O I：
10.1016/j.electacta.2012.12.029
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The role of alloying elements and the influence of plastic deformation on the micro-electrochemical behaviour and the pitting corrosion susceptibility of TiAl6V4 have been investigated in 10 g/L NaCl using the electrochemical microcell technique. Local electrochemical measurements have revealed that both the increase of surface roughness and the increase Of dislocation density have impact on the electrochemical behaviour of TiAl6V4 after plastic deformation. It has been shown the surface roughness induced by slip band emergence is the predominant parameter responsible for the increase of the cathodic current. It has also been shown that cathodic reactions occur preferentially at surface defects (alpha/beta interfaces, slip bands, for example). The presence of aluminium oxide in the passive film hindered cathodic reactions. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：400 / 406
页数：7
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