Anticorrosion properties of polyaniline-coated pigments in organic coatings

Four pigments of various morphology – specularite, α-Fe 2O 3; goethite, α-FeO(OH); talc, (Mg 3(OH) 2(Si 4O 10); and graphite, C – without and with polyaniline phosphate coating, were tested for the anticorrosion performance in coatings produced by epoxy binders on iron plates. The corrosion tests we...

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Bibliographic Details
Published inCorrosion science Vol. 50; no. 12; pp. 3549 - 3560
Main Authors Kalendová, Andrea, Sapurina, Irina, Stejskal, Jaroslav, Veselý, David
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.12.2008
Subjects
A. Anticorrosion pigment
A. Coating
A. Conducting polymer
A. Polyaniline
C. Anticorrosion efficiency
A. Conducting polymer
C. Anticorrosion efficiency
A. Anticorrosion pigment
A. Polyaniline
A. Coating
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Summary:Four pigments of various morphology – specularite, α-Fe 2O 3; goethite, α-FeO(OH); talc, (Mg 3(OH) 2(Si 4O 10); and graphite, C – without and with polyaniline phosphate coating, were tested for the anticorrosion performance in coatings produced by epoxy binders on iron plates. The corrosion tests were carried out in a condenser chamber with continuous water condensation or humidity with sulfur dioxide, and in a salt mist cabinet. Polyaniline coating of pigments in all cases improved the anticorrosion properties. Graphite coated with polyaniline performed the best among eight systems under investigation. The role of graphite and polyaniline conductivity in the electron transfers associated with corrosion of iron has been proposed.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2008.08.044