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Effect of Electrodeposition Parameters on the Microstructure and Corrosion Behavior of DCPD Coatings on Biodegradable Mg-Ca-Zn Alloy

Bakhsheshi-Rad, Hamid Reza and Hamzah, Esah and Saud, Safaa Najah and Medraj, Mamoun (2015) Effect of Electrodeposition Parameters on the Microstructure and Corrosion Behavior of DCPD Coatings on Biodegradable Mg-Ca-Zn Alloy. International Journal Of Applied Ceramic Technology, 12 (5). pp. 1054-1064. ISSN 1546-542X

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Official URL: htpp://dx.doi.org/10.1111/ijac.12301

Abstract

In this study, DCPD (Brushite, CaHPO4.2H2O) coatings were prepared on the surface of a Mg-Ca-Zn alloy using different current density (0.15-1.2 mA/cm2) and deposition time (5-90 min). The results revealed that DCPD with needle-like morphology was observed for the current density between 0.15 and 0.4 mA/cm2, whereas plate-like morphology was obtained at current density above 0.8 mA/cm2. The results showed that surface roughness increased with increasing current density. The lowest corrosion rate of 0.14 mm/year was obtained for the dense and uniform DCPD coating at 0.4 mA/cm2, while further increase has deleterious effect on the corrosion resistance.

Item Type:Article
Uncontrolled Keywords:calcium, coatings, corrosion, corrosion rate, corrosion resistance, current density,
Subjects:A General Works
ID Code:58366
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:07 Mar 2017 15:52

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