Communications - Scientific Letters of the University of Zilina 2014, 16(11):189-193 | DOI: 10.26552/com.C.2014.3A.189-193

Biodegradation Properties Of Az31 Magnesium Alloy Coated by Dicalcium Phosphate Dihydrate

Filip Pastorek¹, Miroslav Omasta², Lenka Bukovinova², Pavel Dolezal³, Branislav Hadzima¹

¹ Department of Materials Engineering, Faculty of Mechanical Engineering, University of Zilina, Slovakia and Research centre of the University of Zilina, Slovakia

² Research centre of the University of Zilina, Slovakia

³ Institute of Material Science and Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Czech Republic

Biodegradation properties of magnesium and its alloys that can be used for implants are not satisfactory and cause serious problems. These problems can be solved by biodegradable surface coatings. Evaluation of biodegradation process of Mg-3Al-1Zn alloy surfaces after grinding and grinding followed by potential controlled electrodeposition of dicalcium phosphate dihydrate (DCPD) was investigated by electrochemical impedance spectroscopy measurements in this study. The potentiostatic electrodeposition treatment process was performed in water solution of Ca(NO3)2.4H2O, NH4H2PO4 and H2O2. The corrosion process on treated and nontreated samples after various exposure times was evaluated in 0.9% NaCl solution simulating body fluid environment at 37 °C.

Keywords: magnesium alloy, electrodeposition, calcium phosphate, electrochemical impedance spectroscopy

Published: October 31, 2014  Show citation