Corrosion inhibition of magnesium using biocompatible Alkyd coatings incorporated by mesoporous silica nanocontainers

•Biocompatible mesoporous silica was used as a host for corrosion inhibitor for Mg.•F− release from MSInh occurred as a result of appearance of OHˉ on the surface.•Fluoride was detected in the scratched zones due to release from mesoporous silica. In the present study, mesoporous silica nanocontaine...

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Bibliographic Details
Published in:Progress in organic coatings 2015-02, Vol.79, p.25-30
Main Authors: Yeganeh, M., Saremi, M.
Format: Article
Language:English
Subjects:
Coatings
Corrosion
Corrosion inhibitors
EIS
Fluorides
Inhibition
Magnesium
Mesoporous silica
Nanostructure
Polymer coating
Protective coatings
Silicon dioxide
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Summary:•Biocompatible mesoporous silica was used as a host for corrosion inhibitor for Mg.•F− release from MSInh occurred as a result of appearance of OHˉ on the surface.•Fluoride was detected in the scratched zones due to release from mesoporous silica. In the present study, mesoporous silica nanocontainer powders with and without inhibitor (fluoride) were dispersed in the Alkyd coatings to improve corrosion resistance of Mg metal. Then, the corrosion behavior of these coatings was studied in comparison with Mg in 2gdm−3 NaCl solution. Electrochemical tests showed that these coatings could protect the surface from chloride attack. Moreover, release of fluoride from mesoporous silica nanocontainers leads to the formation of MgF2 as an inhibitive compound at the interface.
ISSN:0300-9440
1873-331X
DOI:10.1016/j.porgcoat.2014.10.015