Journal article 1162 views 444 downloads
The role of benzotriazole modified zinc phosphate in preventing corrosion-driven organic coating disbondment on galvanised steel
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Hamilton McMurray
Corrosion Science, Volume: 174, Start page: 108839
Swansea University Authors:
Natalie Wint, Chris Griffiths, Curtis Richards, Geraint Williams , Hamilton McMurray
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DOI (Published version): 10.1016/j.corsci.2020.108839
Abstract
A simple modification using adsorbed benzotriazole is shown to significantly improve the performance of zinc phosphate corrosion inhibitive pigment in slowing rates of organic coating failure. The novel inhibitor, ZnPhos-BTA, is dispersed within a model coating and the scanning Kelvin probe (SKP) is...
| Published in: | Corrosion Science |
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| ISSN: | 0010-938X |
| Published: |
Elsevier BV
2020
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa54592 |
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| Abstract: |
A simple modification using adsorbed benzotriazole is shown to significantly improve the performance of zinc phosphate corrosion inhibitive pigment in slowing rates of organic coating failure. The novel inhibitor, ZnPhos-BTA, is dispersed within a model coating and the scanning Kelvin probe (SKP) is used to monitor corrosion driven cathodic coating delamination from hot dip galvanized steel (HDG). Disbondment kinetics are obtained as a function of pigment volume fraction (ϕ) and compared to those obtained for unmodified ZnPhos. Additions of 0.1 ϕ ZnPhos-BTA result in an almost 20-fold reduction in delamination rate compared to standard ZnPhos at the equivalent volume fraction. |
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| Keywords: |
A. Steel; A. Zinc; A. Organic Coatings; C. Atmospheric Corrosion |
| College: |
Professional Services |
| Start Page: |
108839 |