Long-term atmospheric corrosion properties of thermally sprayed Zn, Al and Zn–Al coatings exposed in a coastal area

Hideki Katayama, Seiji Kuroda

doi:10.1016/j.corsci.2013.05.021

Long-term atmospheric corrosion properties of thermally sprayed Zn, Al and Zn–Al coatings exposed in a coastal area

DOI Web Site Web Site 被引用文献6件

書誌事項

公開日: 2013-11

権利情報

https://www.elsevier.com/tdm/userlicense/1.0/

DOI

10.1016/j.corsci.2013.05.021

公開者: Elsevier BV

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説明

Abstract The long-term atmospheric corrosion properties of thermally sprayed Zn, Al and Zn–Al coatings have been evaluated using an electrochemical impedance measurement and several analytical techniques. All the thermal-sprayed specimens with 100 μm coating thickness have protected the steel substrates. In case of the Zn–Al coating, the red rust was not observed regardless of the coating thickness. The corrosion products were identified by the XRD analysis. Preferential dissolution of zinc was observed on the Zn–Al coating by EPMA analysis. The electrochemical impedance results provided an insight about the surface structures of each thermally sprayed coating.