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Emad, Seyedgholamreza
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2022Molecular origins of Epoxy-Amine/Iron oxide interphase formationcitations
- 2021Local oxidation of the buried epoxy-amine/iron oxide interphasecitations
- 2021Local Oxidation of the Buried Epoxy-Amine / Iron Oxide Interphase
- 2019Leaching from coatings pigmented with strontium aluminium polyphosphate inhibitor pigment- evidence for a cluster-percolation modelcitations
- 2019How pigment volume concentration (PVC) and particle connectivity affect leaching of corrosion inhibitive species from coatingscitations
- 2018The Unexpected Role of Carbonate Impurities in Polyphosphate Corrosion Inhibitioncitations
- 2017An organic coating pigmented with strontium aluminium polyphosphate for corrosion protection of zinc alloy coated steelcitations
- 2017Influence of Volume Concentration of Active Inhibitor on Microstructure and Leaching Behaviour of a Model Primercitations
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article
An organic coating pigmented with strontium aluminium polyphosphate for corrosion protection of zinc alloy coated steel
Abstract
<p>An organic primer pigmented with strontium aluminium polyphosphate for the corrosion protection of zinc alloy coated steel was investigated by electron microscopy and electrochemical impedance spectroscopy after exposure to sodium chloride solution. The development of defects within the organic coating was found to be related to the solubility of the pigment, which resulted in two conflicting effects. On the one hand, the inhibitive species released from the solid pigment reduced the corrosion rate of the metal substrate by formation of precipitated products containing zinc, strontium, aluminium, phosphorus and oxygen. On the other hand, the dissolution of the inhibitive pigment resulted in porosity in the coating that created easy pathways not only for the inhibitors to reach the substrate but also for the aggressive species to migrate inwards to the metal surface and, importantly, for the transport of corrosion products outwards.</p>