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The effect of ultrasonic irradiation during electropolymerization of polypyrrole on corrosion prevention of the coated steel

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Title: The effect of ultrasonic irradiation during electropolymerization of polypyrrole on corrosion prevention of the coated steel
Authors: Kowalski, Damian Browse this author
Ueda, Mikito Browse this author →KAKEN DB
Ohtsuka, Toshiaki Browse this author →KAKEN DB
Keywords: polypyrrole
conductive polymer
GD-OES
corrosion protection
ultrasonic irradiation
Issue Date: Jan-2008
Publisher: Pergamon
Journal Title: Corrosion Science
Volume: 50
Issue: 1
Start Page: 286
End Page: 291
Publisher DOI: 10.1016/j.corsci.2007.05.027
Abstract: Ultrasonic irradiation was imposed during electropolymerization of polypyrrole (PPy) in acid phosphate solution containing molybdophosphate (PMo_12O_40^3-) ions and pyrrole monomer. Corrosion of the steel coated by the PPy film prepared under ultrasonic irradiation was tested in 3.5 wt.% NaCl solution and compared with corrosion of the steel coated by the PPy film without ultrasonic irradiation. The PPy film prepared under ultrasonic irradiation kept the steel in the passive state one and a half times as long as that prepared without ultrasonic irradiation. Imposition of ultrasound enhanced the doping of PMo_12O_40^3- and decreased the doping of HPO_4^2-. The surface morphology of the PPy film was changed with imposition of ultrasound in electropolymerization process. Under imposition of ultrasound, a dense and compact PPy layer was formed. The structure of the PPy film obtained under ultrasonic irradiation was assumed to result from change in nucleation-growth mechanism.
Relation: http://www.sciencedirect.com/science/journal/0010938X
Type: article (author version)
URI: http://hdl.handle.net/2115/32878
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: Damian Kowalski

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