Effect of Surface Treatment by DCPD Coating on Corrosion Resistance of Magnesium Alloy Elektron 21

Abstract:

Electrodeposition process of calcium phosphate (CaP) was performed on Elektron 21 magnesium alloy and the influence on corrosion resistance of the alloy covered by CaP was investigated by electrochemical tests. The electrodeposition treatment was performed by potential controlled method in water solution of Ca (NO₃)₂.4H₂O, NH₄H₂PO₄ and H₂O₂. Corrosion measurements were performed in 0.1M NaCl solution at laboratory temperature (22 ± 1 °C) using electrochemical impedance spectroscopy. Electrodeposited surfaces had higher polarization resistance than only ground surface after all exposition time in 0.1M NaCl.

• Periodical: Materials Science Forum (Volume 811)
• Pages: 67-73
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.811.67
• Online since: December 2014
• Authors: Miroslav Omasta*, Branislav Hadzima, Filip Pastorek
• Keywords: Corrosion Resistance, Dicalcium Phosphate Dehydrate, Electrochemical Properties, Electrodeposition, Magnesium Alloys

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