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Inhibition of Localized Corrosion of Hot Dip Galvanized Steel by Phenylphosphonic Acid

C. F. Glover, G. Williams, Geraint Williams Orcid Logo, Carol Glover

Journal of The Electrochemical Society, Volume: 164, Issue: 7, Pages: C407 - C417

Swansea University Authors: Geraint Williams Orcid Logo, Carol Glover

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DOI (Published version): 10.1149/2.1551707jes

Abstract

Phenylphosphonic acid (H2PP) is investigated as a corrosion inhibitor of hot dip galvanized steel (HDG) fully immersed in a 5% (w/v) sodium chloride electrolyte. An in-situ Scanning Vibrating Electrode Technique (SVET) is used where concentrations of H2PP are systematically added to the electrolyte...

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Published in: Journal of The Electrochemical Society
ISSN: 0013-4651 1945-7111
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa34268
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Abstract: Phenylphosphonic acid (H2PP) is investigated as a corrosion inhibitor of hot dip galvanized steel (HDG) fully immersed in a 5% (w/v) sodium chloride electrolyte. An in-situ Scanning Vibrating Electrode Technique (SVET) is used where concentrations of H2PP are systematically added to the electrolyte in neutral conditions. H2PP, at a concentration of 5 × 10−2 mol dm−3, is shown to effectively inhibit localized corrosion over a 24 h period with 96% efficiency. H2PP is compared with a sodium phosphate (Na3PO4) inhibitor at the same concentration over a wide pH range.
Keywords: Corrosion inhibition, hot dip galvanised steel, phenylphosphonic acid, SVET
College: Faculty of Science and Engineering
Issue: 7
Start Page: C407
End Page: C417