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http://dx.doi.org/10.7234/composres.2020.33.4.185

Comparison of PEO Coating Layer of AZ31 Alloy Surface according to EDTA Contained in Electrolytic Solution  

Woo, Jin-Ju (School of Materials Science & Engineering, Changwon National Univerisity)
Kim, Min-Soo (School of Advanced Defense Engineering, Changwon National Univerisity)
Koo, Bon-Heun (School of Materials Science & Engineering, Changwon National Univerisity)
Publication Information
Composites Research / v.33, no.4, 2020 , pp. 185-190 More about this Journal
Abstract
Titanium is widely used as an implant material due to its excellent biocompatibility, but has a problem due to high cost and high Young's modulus compared to bone. Magnesium alloy is attracting attention as a material to replace it. Magnesium alloy, like titanium, has excellent biocompatibility and has a Young's modulus similar to that of bone. However, there are corrosion resistance problems due to corrosion, and various surface treatment methods are being studied to solve them. In this study, the ceramic coating layer was grown on the surface of the AZ31 magnesium alloy in an electrolytic solution containing EDTA, and the properties of the formed coating were analyzed through SEM and XRD to analyze the microstructure and shape, and measured the micro hardness of the coating layer. Corrosion properties in the body were evaluated through a corrosion test in SBF solution, a component similar to blood plasma.
Keywords
PEO Coating; Electrolytic solution; EDTA; AZ31 Magnesium alloy; SEM;
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