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Kinetics of corrosion-driven cathodic disbondment on organic coated trivalent chromium metal-oxide-carbide coatings on steel

James Edy, Hamilton McMurray, Koen R. Lammers, Arnoud C.A. deVooys

Corrosion Science, Volume: 157, Pages: 51 - 61

Swansea University Authors: James Edy, Hamilton McMurray

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DOI (Published version): 10.1016/j.corsci.2019.04.037

Abstract

Chromium metal-oxide-carbide coatings of varying composition and thickness, cathodically electrodeposited from a Cr (III)-formate electrolyte are compared for their ability to resist the corrosion driven delamination of an adherent polymer overcoat. Cathodic disbondment rates are determined using an...

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Published in: Corrosion Science
ISSN: 0010-938X
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa50252
first_indexed 2019-05-09T20:01:19Z
last_indexed 2019-08-09T16:28:32Z
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spelling 2019-08-07T13:35:18.8076090 v2 50252 2019-05-07 Kinetics of corrosion-driven cathodic disbondment on organic coated trivalent chromium metal-oxide-carbide coatings on steel b8c456c159e444c0653f165e29762702 James Edy James Edy true false 56fc1b17ffc3bdf6039dc05c6eba7f2a Hamilton McMurray Hamilton McMurray true false 2019-05-07 TATA Chromium metal-oxide-carbide coatings of varying composition and thickness, cathodically electrodeposited from a Cr (III)-formate electrolyte are compared for their ability to resist the corrosion driven delamination of an adherent polymer overcoat. Cathodic disbondment rates are determined using an in-situ scanning Kelvin probe technique. The rates of cathodic disbondment decreased with increasing thickness and Cr (III) oxide content of the Cr (III) derived coating. Disbondment kinetics are explained in terms of coating porosity, chemical composition and electrocatalytic activity of the various metallic surfaces for the cathodic oxygen reduction reaction (ORR). Diminished electrocatalytic activity for ORR, as determined from cathodic polarisation measurements with a rotating disk electrode, are found to correlate with diminished delamination kinetics. Journal Article Corrosion Science 157 51 61 0010-938X Steel, Chromium, Cathodic disbondment, Oxygen reduction, Chrome-free 31 12 2019 2019-12-31 10.1016/j.corsci.2019.04.037 https://doi.org/10.1016/j.corsci.2019.04.037 COLLEGE NANME Tata Steel COLLEGE CODE TATA Swansea University EPSRC 2019-08-07T13:35:18.8076090 2019-05-07T22:15:59.0653238 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised James Edy 1 Hamilton McMurray 2 Koen R. Lammers 3 Arnoud C.A. deVooys 4 0050252-07082019133510.pdf edy2019(2).pdf 2019-08-07T13:35:10.4600000 Output 2715167 application/pdf Version of Record true 2019-08-07T00:00:00.0000000 false eng
title Kinetics of corrosion-driven cathodic disbondment on organic coated trivalent chromium metal-oxide-carbide coatings on steel
spellingShingle Kinetics of corrosion-driven cathodic disbondment on organic coated trivalent chromium metal-oxide-carbide coatings on steel
James Edy
Hamilton McMurray
title_short Kinetics of corrosion-driven cathodic disbondment on organic coated trivalent chromium metal-oxide-carbide coatings on steel
title_full Kinetics of corrosion-driven cathodic disbondment on organic coated trivalent chromium metal-oxide-carbide coatings on steel
title_fullStr Kinetics of corrosion-driven cathodic disbondment on organic coated trivalent chromium metal-oxide-carbide coatings on steel
title_full_unstemmed Kinetics of corrosion-driven cathodic disbondment on organic coated trivalent chromium metal-oxide-carbide coatings on steel
title_sort Kinetics of corrosion-driven cathodic disbondment on organic coated trivalent chromium metal-oxide-carbide coatings on steel
author_id_str_mv b8c456c159e444c0653f165e29762702
56fc1b17ffc3bdf6039dc05c6eba7f2a
author_id_fullname_str_mv b8c456c159e444c0653f165e29762702_***_James Edy
56fc1b17ffc3bdf6039dc05c6eba7f2a_***_Hamilton McMurray
author James Edy
Hamilton McMurray
author2 James Edy
Hamilton McMurray
Koen R. Lammers
Arnoud C.A. deVooys
format Journal article
container_title Corrosion Science
container_volume 157
container_start_page 51
publishDate 2019
institution Swansea University
issn 0010-938X
doi_str_mv 10.1016/j.corsci.2019.04.037
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
url https://doi.org/10.1016/j.corsci.2019.04.037
document_store_str 1
active_str 0
description Chromium metal-oxide-carbide coatings of varying composition and thickness, cathodically electrodeposited from a Cr (III)-formate electrolyte are compared for their ability to resist the corrosion driven delamination of an adherent polymer overcoat. Cathodic disbondment rates are determined using an in-situ scanning Kelvin probe technique. The rates of cathodic disbondment decreased with increasing thickness and Cr (III) oxide content of the Cr (III) derived coating. Disbondment kinetics are explained in terms of coating porosity, chemical composition and electrocatalytic activity of the various metallic surfaces for the cathodic oxygen reduction reaction (ORR). Diminished electrocatalytic activity for ORR, as determined from cathodic polarisation measurements with a rotating disk electrode, are found to correlate with diminished delamination kinetics.
published_date 2019-12-31T19:43:44Z
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score 11.04748

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