Elsevier

Procedia Engineering

Volume 192, 2017, Pages 399-403
Procedia Engineering

Study of Corrosion Behavior of Dicalcium Phosphate-dihydrate (DCPD) Coating Prepared by Large Amplitude Sinusoidal Voltammetry (LASV) Technique on ZW3 Magnesium Alloy☆

https://doi.org/10.1016/j.proeng.2017.06.069Get rights and content
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Abstract

This study is focused on corrosion behavior of dicalcium phosphate-dihydrate (DCPD) coating electrodeposited by large amplitude sinusoidal voltammetry (LASV) technique on ZW3 magnesium alloy in sodium sulphate solution. The electrochemical characteristics of coated and non-coated samples were evaluated by potentiodynamic polarization (PD) tests in 0.1 M Na2SO4 solution at the temperature of 22±1 °C. The PD curves were analyzed using Tafel extrapolation method. The analyzed values of the corrosion potential and corrosion current density obtained from PD tests proved that DCPD coating can effectively increase corrosion resistance and slow down degradation of ZW3 magnesium alloy in chosen environment.

Keywords

magnesium alloy
calcium phosphate
corrosion resistance
potentiodynamic polarization test

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Peer-review under responsibility of the scientific committee of TRANSCOM 2017: International scientific conference on sustainable, modern and safe transport.

© 2017 The Author(s). Published by Elsevier Ltd.