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  The protection zone: A long-range corrosion protection mechanism around conducting polymer particles in composite coatings: Part II. PEDOT: PSS

Merz, A., & Rohwerder, M. (2019). The protection zone: A long-range corrosion protection mechanism around conducting polymer particles in composite coatings: Part II. PEDOT: PSS. Journal of the Electrochemical Society, 166(12), C314-C320. doi:10.1149/2.0981912jes.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-6BB0-B Version Permalink: http://hdl.handle.net/21.11116/0000-0006-6BB1-A
Genre: Journal Article

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Merz_2019_J._Electrochem._Soc._166_C314.pdf (Supplementary material), 3MB
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Merz_2019_J._Electrochem._Soc._166_C314.pdf
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 Creators:
Merz, Anna1, Author              
Rohwerder, Michael1, Author              
Affiliations:
1Corrosion, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_2074315              

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Free keywords: Composite coatings; Plastic coatings; Polyaniline; Polypyrroles; Zinc coatings, Coating delamination; Corrosion potentials; Corrosion protection mechanisms; High performance coatings; Insulating coatings; Intrinsically conducting polymer; Protection of metals; Scanning Kelvin probes, Corrosion resistant coatings
 Abstract: PEDOT:PSS is most likely the intrinsically conducting polymer (ICP) with the most outstanding stability of its electrical properties. Thus it might be the ideal material when high-performance coatings for corrosion protection of metal products are of aim. The purpose of this work is to elucidate the protection against corrosion provided by PEDOT:PSS pigments when used as an additive in a conventional insulating coating, applied to iron and zinc. By means of dedicated model samples simulating ICP pigments in contact with the metal surface on a more macroscopic level, it was found that a "protection zone" is established in the vicinity of the ICP, hindering further coating delamination. Resistance against ionic transport at the coating/metal interface is of major significance for its endurance, as the functioning of the protection zone relies on galvanic polarization of the interface by the ICP. Scanning Kelvin Probe (SKP) has been employed to monitor the changes in corrosion potential, in order to evaluate and also compare the PEDOT:PSS performance to other ICPs available in the market, e.g. polyaniline and polypyrrole. © The Author(s) 2019.

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Language(s): eng - English
 Dates: 2019-07-19
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1149/2.0981912jes
 Degree: -

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Title: Journal of the Electrochemical Society
  Abbreviation : J. Electrochem. Soc.
Source Genre: Journal
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Publ. Info: New York, NY, USA : Electrochemical Society
Pages: - Volume / Issue: 166 (12) Sequence Number: - Start / End Page: C314 - C320 Identifier: ISSN: 0013-4651
CoNE: https://pure.mpg.de/cone/journals/resource/991042748197686