The use of anion exchange pigments to inhibit the filiform corrosion of zinc-aluminium-magnesium coated steel
Corrosion Science, ISSN: 0010-938X, Vol: 193, Page: 109886
2021
- 10Citations
- 8Captures
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Article 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.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0010938X21006521; http://dx.doi.org/10.1016/j.corsci.2021.109886; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85117576977&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0010938X21006521; https://dx.doi.org/10.1016/j.corsci.2021.109886
Elsevier BV
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