Corrosion properties of anodic oxide coatings on Ti-6Al-4V in simulated body solution

被引：5
|
作者：
Narayanan, R. [1 ]
Mukherjee, P. [1 ]
Seshadri, S. K. [1 ]
机构：
[1] Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India
来源：
TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING | 2006年 / 84卷 / 03期
关键词：
Ti-6Al-4V; calcium; phosphorus; porosity; SBF; corrosion;
D O I：
10.1179/174591906X114525
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Anodic oxide coatings were synthesised on Ti-6Al-4V substrates using aqueous electrolytes containing dissolved calcium and phosphorus. Different coatings were produced by varying the time of synthesis. Inherent features of the coatings were studied by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM). Uniform corrosion, electrochemical polarisation and ac impedance tests were performed in simulated body fluid (SBF). Small amounts of calcium and phosphorus are deposited from the electrolyte on to the coating and their levels increase with increasing duration of synthesis. Maximum values of porosity and thickness are obtained for oxides coated for 3 h. Coatings produced from shorter times showed very good resistance to the attack of SBF.
引用
收藏
页码：134 / 140
页数：7
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