Corrosion mechanisms of Al‐alloyed hot‐dipped zinc coatings in wet supercritical carbon dioxide
Ville Saarimaa,
Aaretti Kaleva,
Arnold Ismailov
et al.
Abstract:Commercial hot‐dip galvanized zinc (Zn‐0.2% Al), galfan (Zn‐5% Al), and galvalume (Zn‐55% Al) coatings were exposed to wet scCO2, followed by an assessment of microstructural changes in the coating structure. Zinc and galfan coatings showed similar surface activity with abundant zinc dissolution and uniform corrosion product deposition. The Al‐rich phases of the galfan coating were intact in the studied atmosphere and eventually became embedded within the deposits. The zinc dissolution ended for zinc and galfa… Show more
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