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The use of anion exchange pigments to inhibit the filiform corrosion of zinc-aluminium-magnesium coated steel

Natalie Wint Orcid Logo, D. Eaves, Geraint Williams Orcid Logo, Hamilton McMurray

Corrosion Science, Volume: 193, Start page: 109886

Swansea University Authors: Natalie Wint Orcid Logo, Geraint Williams Orcid Logo, Hamilton McMurray

  • Accepted Manuscript under embargo until: 14th October 2022

Abstract

In-coating natural (carbonate exchanged) hydrotalcite is shown to significantly reduce the extent of filiform corrosion (FFC) on Zinc-Aluminium-Magnesium (ZAM) coated steels. The hydrotalcite pigment is dispersed within the model poly vinyl butyral (PVB) coating, which is then applied to ZAM. Acetic...

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Published in: Corrosion Science
ISSN: 0010-938X
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa58367
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first_indexed 2021-10-18T08:04:09Z
last_indexed 2021-11-06T04:23:27Z
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spelling 2021-11-04T15:33:10.1373089 v2 58367 2021-10-18 The use of anion exchange pigments to inhibit the filiform corrosion of zinc-aluminium-magnesium coated steel 5be5dcc4b97c78b3063e258add4fff5c 0000-0002-9229-5728 Natalie Wint Natalie Wint true false 0d8fc8d44e2a3c88ce61832f66f20d82 0000-0002-3399-5142 Geraint Williams Geraint Williams true false 56fc1b17ffc3bdf6039dc05c6eba7f2a Hamilton McMurray Hamilton McMurray true false 2021-10-18 GENG In-coating natural (carbonate exchanged) hydrotalcite is shown to significantly reduce the extent of filiform corrosion (FFC) on Zinc-Aluminium-Magnesium (ZAM) coated steels. The hydrotalcite pigment is dispersed within the model poly vinyl butyral (PVB) coating, which is then applied to ZAM. Acetic acid is applied to an artificial scribe penetrative PVB coating defect to initiate corrosion. Filiform corroded area and filament length are shown to decrease with increase in pigment volume fraction (ϕ). Tapering of filaments is also observed. Findings are consistent with hydrotalcite acting to sequester anions or neutralise the filiform head electrolyte. Journal Article Corrosion Science 193 109886 Elsevier BV 0010-938X A Steel, A Magnesium, A Metal Coatings, A Organic Coatings, C Atmospheric Corrosion, C Polymer Coatings 1 12 2021 2021-12-01 10.1016/j.corsci.2021.109886 COLLEGE NANME General Engineering COLLEGE CODE GENG Swansea University 2021-11-04T15:33:10.1373089 2021-10-18T09:01:47.1353700 College of Engineering Engineering Natalie Wint 0000-0002-9229-5728 1 D. Eaves 2 Geraint Williams 0000-0002-3399-5142 3 Hamilton McMurray 4 Under embargo Under embargo 2021-10-18T09:03:49.1717635 Output 1087531 application/pdf Accepted Manuscript true 2022-10-14T00:00:00.0000000 ©2021 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND) true eng https://creativecommons.org/licenses/by-nc-nd/4.0/
title The use of anion exchange pigments to inhibit the filiform corrosion of zinc-aluminium-magnesium coated steel
spellingShingle The use of anion exchange pigments to inhibit the filiform corrosion of zinc-aluminium-magnesium coated steel
Natalie, Wint
Geraint, Williams
Hamilton, McMurray
title_short The use of anion exchange pigments to inhibit the filiform corrosion of zinc-aluminium-magnesium coated steel
title_full The use of anion exchange pigments to inhibit the filiform corrosion of zinc-aluminium-magnesium coated steel
title_fullStr The use of anion exchange pigments to inhibit the filiform corrosion of zinc-aluminium-magnesium coated steel
title_full_unstemmed The use of anion exchange pigments to inhibit the filiform corrosion of zinc-aluminium-magnesium coated steel
title_sort The use of anion exchange pigments to inhibit the filiform corrosion of zinc-aluminium-magnesium coated steel
author_id_str_mv 5be5dcc4b97c78b3063e258add4fff5c
0d8fc8d44e2a3c88ce61832f66f20d82
56fc1b17ffc3bdf6039dc05c6eba7f2a
author_id_fullname_str_mv 5be5dcc4b97c78b3063e258add4fff5c_***_Natalie, Wint_***_0000-0002-9229-5728
0d8fc8d44e2a3c88ce61832f66f20d82_***_Geraint, Williams_***_0000-0002-3399-5142
56fc1b17ffc3bdf6039dc05c6eba7f2a_***_Hamilton, McMurray_***_
author Natalie, Wint
Geraint, Williams
Hamilton, McMurray
author2 Natalie Wint
D. Eaves
Geraint Williams
Hamilton McMurray
format Journal article
container_title Corrosion Science
container_volume 193
container_start_page 109886
publishDate 2021
institution Swansea University
issn 0010-938X
doi_str_mv 10.1016/j.corsci.2021.109886
publisher Elsevier BV
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 0
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description In-coating natural (carbonate exchanged) hydrotalcite is shown to significantly reduce the extent of filiform corrosion (FFC) on Zinc-Aluminium-Magnesium (ZAM) coated steels. The hydrotalcite pigment is dispersed within the model poly vinyl butyral (PVB) coating, which is then applied to ZAM. Acetic acid is applied to an artificial scribe penetrative PVB coating defect to initiate corrosion. Filiform corroded area and filament length are shown to decrease with increase in pigment volume fraction (ϕ). Tapering of filaments is also observed. Findings are consistent with hydrotalcite acting to sequester anions or neutralise the filiform head electrolyte.
published_date 2021-12-01T04:28:28Z
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