Article ID Journal Published Year Pages File Type
1470099 Corrosion Science 2010 11 Pages PDF
Abstract

This paper is a continuation of our investigation into the characteristic dichotomy of Mg-rich primers between accelerated salt-fog testing and natural weathering. Our earlier study suggested that magnesium powder reacted with atmospheric CO2 to form a protective carbonate layer on its surface. In this study, magnesium powder was treated with aqueous carbonic acid to accelerate magnesium carbonate development. The treated magnesium powder was formulated into a Mg-rich primer and evaluated for its corrosion resistance. The Mg-rich primer formulated with the treated Mg powder performed better in the salt-fog test than the control primer based on untreated Mg powder.

Research highlights► In Mg-rich primers, Mg is known to react with atmospheric CO2. ► Mg powder was treated with carbonic acid to form a layer of protective MgCO3 on Mg. ► Carbonic acid treated Mg powder improves the performance of Mg-rich primer.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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