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Open AccessArticle

Effects of Alloying Element Ca on the Corrosion Behavior and Bioactivity of Anodic Films Formed on AM60 Mg Alloys

by Anawati Anawati 1,2, Hidetaka Asoh 1,3 and Sachiko Ono 1,3,*
1
Research Institute for Science and Technology, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan
2
Department of Physics, Faculty of Mathematics and Natural Sciences, University of Indonesia, Depok 16424, Indonesia
3
Department of Applied Chemistry, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Patrice Laquerriere
Materials 2017, 10(1), 11; https://doi.org/10.3390/ma10010011
Received: 18 November 2016 / Revised: 12 December 2016 / Accepted: 16 December 2016 / Published: 26 December 2016
(This article belongs to the Special Issue Calcium Phosphate in Biomedical Applications)
Effects of alloying element Ca on the corrosion behavior and bioactivity of films formed by plasma electrolytic oxidation (PEO) on AM60 alloys were investigated. The corrosion behavior was studied by conducting electrochemical tests in 0.9% NaCl solution while the bioactivity was evaluated by soaking the specimens in simulated body fluid (SBF). Under identical anodization conditions, the PEO film thicknesses increased with increasing Ca content in the alloys, which enhanced the corrosion resistance in NaCl solution. Thicker apatite layers grew on the PEO films of Ca-containing alloys because Ca was incorporated into the PEO film and because Ca was present in the alloys. Improvement of corrosion resistance and bioactivity of the PEO-coated AM60 by alloying with Ca may be beneficial for biodegradable implant applications. View Full-Text
Keywords: magnesium alloy; anodic films; corrosion; polarization; biodegradable magnesium alloy; anodic films; corrosion; polarization; biodegradable
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Anawati, A.; Asoh, H.; Ono, S. Effects of Alloying Element Ca on the Corrosion Behavior and Bioactivity of Anodic Films Formed on AM60 Mg Alloys. Materials 2017, 10, 11.

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