Study of Calcium Phosphate (OCP) Electrodeposition Process on Elektron 21 Magnesium Alloy Surface

Abstract:

Contribution deals with evaluation of the electrodeposition process of octacalcium phosphate layer on the surface of Elektron 21 magnesium alloy. The octacalcium phosphate coating (OCP) was electrochemically deposited in a solution containing 0.167 M CaCl₂ and 0.1 M NH₄H₂PO₄. The formation of calcium phosphate was divided into several stages and described using light microscopy. The influence of octacalcium phosphate layer on the electrochemical characteristics of Elektron 21 magnesium alloy was evaluated by potentiodynamic measurements in 0.1 M NaCl solution at a temperature 22 ± 1°C. Evaluation of calcium phosphating process realized on the alloy surface after grinding was investigated by electrochemical tests supported by photodocumentation using stereomicroscope.

• Periodical: Materials Science Forum (Volume 818)
• Pages: 115-120
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.818.115
• Online since: May 2015
• Authors: Miroslav Omasta*, Branislav Hadzima
• Keywords: Corrosion Resistance, Electrochemical Properties, Electrodeposition, Magnesium Alloys, Octacalcium Phosphate Coating

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