Corrosion characteristics of cold gas spray coatings of reinforced aluminum deposited onto carbon steel
By Silva, F. S. da; Bedoya, J.; Dosta, S.; Cinca, N.; Cano, I. G.; Guilemany, J. M.; Benedetti, A. V.
Published in Corrosion Science
NULL
2017
Abstract
Abstract The morphology, chemical, mechanical and corrosion characterization of starting materials, and Al and Al-Al2O3/Al coatings obtained by Cold Gas Spray and applied on common steel substrate were performed. An Al coating on a ground or grit blasted substrate, and Al-Al2O3/Al coating on ground mild carbon steel have been compared. The electrochemical results showed that the coatings protect the substrate for immersion times >2000 h due to the dense structure obtained by Al and Al-Al2O3. The electrolyte reaches the substrate only after 2000 h of immersion without wetting completely the coating/substrate interface. Coatings have resisted 3000 h of salt fog test.
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