Application of thermally activated red mud in surface treatment of 5005 aluminum alloy
By Liu, Shifeng; Zeng, Jianmin
Published in Progress in Organic Coatings
2019
Abstract
Colored coatings with thermally activated red mud (RM) as an electrolyte additive were applied to 5005 aluminum alloy using the plasma-electrolytic-oxidation (PEO) technique. Effects of the RM on the PEO coating composition, structure, and properties were investigated. The pure PEO coating was white and consisted of ?-Al2O3 and ?-Al2O3. The RM PEO coatings were colored, and consisted of ?-Al2O3 and ?-Al2O3, plus CaTiO3, CaCO3, SiO2, Fe2O3, and mCaO