A mechanistic study of in vitro degradation of magnesium alloy using electrochemical techniques

Kannan, M. Bobby, and Raman, R.K. Singh (2010) A mechanistic study of in vitro degradation of magnesium alloy using electrochemical techniques. Journal of biomedical materials research, 93a (3). pp. 1050-1055.

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Abstract

To understand the in vitro degradation mechanism of magnesium alloy, electrochemical experiments viz., electrochemical impedance spectroscopy and potentiodynamic polarization, were carried out on AZ91 magnesium alloy under different experimental conditions. The study suggests: (i) the body temperature decreases significantly the corrosion resistance of the alloy, (ii) alkali-treatment of the alloy enhances the corrosion resistance, and (iii) although chloride in simulated body fluid minimizes the corrosion resistance, the presence of other constituents viz., phosphate, calcium, and carbonate, enhances the film forming tendency and hence increases the corrosion resistance of the alloy.

Item ID: 11406
Item Type: Article (Refereed Research - C1)
Keywords: biodegradable; magnesium; polarization; electrochemical impedance spectroscopy; simulated body fluid
ISSN: 1552-4973
Date Deposited: 27 May 2010 01:22
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091207 Metals and Alloy Materials @ 100%
SEO Codes: 86 MANUFACTURING > 8611 Basic Metal Products (incl. Smelting, Rolling, Drawing and Extruding) > 861199 Basic Metal Products (incl. Smelting, Rolling, Drawing and Extruding) not elsewhere classified @ 100%
Citation Count from Web of Science Web of Science 15
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