Journal
CORROSION SCIENCE
Volume 53, Issue 1, Pages 153-160Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2010.09.008
Keywords
Magnesium; Alloy; EIS; Polymer coating; Cathodic protection
Funding
- Ministry of Education of China [108129]
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A Mg-rich epoxy primer was prepared by adding pure magnesium particles to an epoxy coating The coating properties were studied with electrochemical impedance spectroscopy (EIS) scanning electronic microscopy (SEM) and X-ray diffraction (XRD) The Mg-rich primer showed better protection for AZ91D magnesium alloy than the same epoxy primer without Mg addition The open circuit potential measurements showed cathodic protection effect of the Mg-rich primer on AZ91D alloy Cross scratch testing showed that the Mg-rich primer provided better protection for the substrate than original epoxy coating The precipitation of Mg(OH)(2) in the coating also provided some degree of barrier protection (C) 2010 Elsevier Ltd All rights reserved
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