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<div class="csl-entry">Feldmann, F. (2023, October 17). <i>Characterization of the Galvanic Protection of Zinc Flake Coating by Spectroelectrochemistry and Industrial Testing</i> [Presentation]. IAP Seminar TU Wien 2023, TU Wien, Institut für Angewandte Physik (IAP), Austria. http://hdl.handle.net/20.500.12708/189299</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/189299
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dc.description.abstract
The properties of hot-dip galvanised and electroplated zinc coatings on steel have been widely studied, butthe corrosion mechanisms of zinc flake coatings have not yet been investigated in similar detail. Here, wepresent the protective effect of inorganic lamellar zinc coatings, comparing the metallic dissolution rates of
different zinc, aluminium and alloyed flakes using an Inductively Coupled Plasma Mass Spectrometry (ICPMS) flow cell. These experiments were carried out on both intact and pre-damaged coatings with different electrolytes. Data is also compared to accelerated laboratory corrosion tests and outdoor weathering results.
The chloride concentration, and its effect on the passive oxide film, appears to be a key aspect moderating the dissolution rate and hence sacrificial zinc dissolution under various conditions. The complementary use of accelerated tests and ICP-MS flow cell analysis provides new insights into both the influence of the
corrosive environment and the impact of the zinc flake (alloy) used. Based on this approach tailored coating solutions using zinc flake coatings can be developed.
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dc.language.iso
en
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dc.subject
corrosion protection
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dc.subject
cathodic protection
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dc.subject
thin coatings
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dc.subject
zinc lamellar
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dc.title
Characterization of the Galvanic Protection of Zinc Flake Coating by Spectroelectrochemistry and Industrial Testing
