Electrochemical Characteristics of the Hydroxyapatite Coatings Prepared by Mg Sacrificial Anode

被引：11

作者：

Bo, Wu ^{[1
]}

Chenghao, Liang ^{[1
,2
]}

Peng, Wang ^{[1
]}

机构：

[1] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China

[2] Dalian Maritime Univ, Dalian 116026, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2010年 / 39卷 / 12期

关键词：

HA coatings; simulated human body fluid; electrochemical test; immersion test; TI-6AL-7NB; CORROSION; ALLOY;

D O I：

10.1016/S1875-5372(11)60001-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The hydroxyapatite (HA) coating, one of the most important biomaterials, was prepared on Ti6Al4V alloy by Mg sacrificial anode to improve the anticorrosion electrochemical characteristics. Energy dispersive X-ray analysis (EDX), electron probe microanalyzer (EPMA), Fourier transform infrared spectra (FTIR) and X-ray diffraction (XRD) were used to analyze the HA coating. The results show that the HA coating is composed of needle-like hydroxyapatite crystals with the Ca/P ratio of 1,4063. After the immersion test of 30 d, the crystals become larger in Hank's solution, from needle-like to sheet-like in Ringer's solution and column-like in Tyrode's solution. The tests of open circuit potential, polarizing curves and EIS method in Hank's solution, Ringer's solution, Tyrode's solution and human blood show that the Ti6Al4V alloy with HA coating has better electrochemical characters than Ti6Al4V alloy.

引用

页码：2069 / 2074

页数：6

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