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Smart-release inhibition of corrosion driven organic coating failure on zinc by cationic benzotriazole based pigments

C.A.J. Richards, H.N. McMurray, G. Williams, Geraint Williams Orcid Logo, Hamilton McMurray

Corrosion Science

Swansea University Authors: Geraint Williams Orcid Logo, Hamilton McMurray

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DOI (Published version): 10.1016/j.corsci.2019.04.005

Abstract

A novel cationic benzotriazole pigment (CBP) based on the benzotriazolium cation (BTAH2+) exchanged into a sulfonated organic resin has been synthesized and evaluated as a means of inhibiting the corrosion-driven cathodic disbondment of organic coatings from the surface of galvanized steel. The CBP...

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Published in: Corrosion Science
ISSN: 0010-938X
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa49933
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first_indexed 2019-04-09T13:04:50Z
last_indexed 2019-07-17T15:33:53Z
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spelling 2019-07-17T10:56:17.8485266 v2 49933 2019-04-08 Smart-release inhibition of corrosion driven organic coating failure on zinc by cationic benzotriazole based pigments 0d8fc8d44e2a3c88ce61832f66f20d82 0000-0002-3399-5142 Geraint Williams Geraint Williams true false 56fc1b17ffc3bdf6039dc05c6eba7f2a Hamilton McMurray Hamilton McMurray true false 2019-04-08 MTLS A novel cationic benzotriazole pigment (CBP) based on the benzotriazolium cation (BTAH2+) exchanged into a sulfonated organic resin has been synthesized and evaluated as a means of inhibiting the corrosion-driven cathodic disbondment of organic coatings from the surface of galvanized steel. The CBP is acidic in nature (BTAH2+ pKa ≈ 1.1) and is intended to be compatible with acidic coating formulations such as etch-primers. Delamination rates, as measured using a scanning Kelvin probe (SKP), were found to decrease monotonically with increasing CBP volume fraction (ΦCBP) and to approach zero when ΦCBP = 0.1. The mechanism of CBP operation is described. Journal Article Corrosion Science 0010-938X benzotriazole, corrosion, inhibition, zinc, galvanized steel 31 12 2019 2019-12-31 10.1016/j.corsci.2019.04.005 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2019-07-17T10:56:17.8485266 2019-04-08T11:48:44.0909917 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering C.A.J. Richards 1 H.N. McMurray 2 G. Williams 3 Geraint Williams 0000-0002-3399-5142 4 Hamilton McMurray 5 0049933-11042019084739.pdf richards2019(2)v2.pdf 2019-04-11T08:47:39.1570000 Output 21625709 application/pdf Accepted Manuscript true 2020-04-10T00:00:00.0000000 true eng
title Smart-release inhibition of corrosion driven organic coating failure on zinc by cationic benzotriazole based pigments
spellingShingle Smart-release inhibition of corrosion driven organic coating failure on zinc by cationic benzotriazole based pigments
Geraint Williams
Hamilton McMurray
title_short Smart-release inhibition of corrosion driven organic coating failure on zinc by cationic benzotriazole based pigments
title_full Smart-release inhibition of corrosion driven organic coating failure on zinc by cationic benzotriazole based pigments
title_fullStr Smart-release inhibition of corrosion driven organic coating failure on zinc by cationic benzotriazole based pigments
title_full_unstemmed Smart-release inhibition of corrosion driven organic coating failure on zinc by cationic benzotriazole based pigments
title_sort Smart-release inhibition of corrosion driven organic coating failure on zinc by cationic benzotriazole based pigments
author_id_str_mv 0d8fc8d44e2a3c88ce61832f66f20d82
56fc1b17ffc3bdf6039dc05c6eba7f2a
author_id_fullname_str_mv 0d8fc8d44e2a3c88ce61832f66f20d82_***_Geraint Williams
56fc1b17ffc3bdf6039dc05c6eba7f2a_***_Hamilton McMurray
author Geraint Williams
Hamilton McMurray
author2 C.A.J. Richards
H.N. McMurray
G. Williams
Geraint Williams
Hamilton McMurray
format Journal article
container_title Corrosion Science
publishDate 2019
institution Swansea University
issn 0010-938X
doi_str_mv 10.1016/j.corsci.2019.04.005
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 - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
active_str 0
description A novel cationic benzotriazole pigment (CBP) based on the benzotriazolium cation (BTAH2+) exchanged into a sulfonated organic resin has been synthesized and evaluated as a means of inhibiting the corrosion-driven cathodic disbondment of organic coatings from the surface of galvanized steel. The CBP is acidic in nature (BTAH2+ pKa ≈ 1.1) and is intended to be compatible with acidic coating formulations such as etch-primers. Delamination rates, as measured using a scanning Kelvin probe (SKP), were found to decrease monotonically with increasing CBP volume fraction (ΦCBP) and to approach zero when ΦCBP = 0.1. The mechanism of CBP operation is described.
published_date 2019-12-31T04:01:12Z
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score 11.016235

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