Effect of cerium ion addition on corrosion and wear characteristics of plasma electrolytic oxidation coating of CP-Ti

• Published in: Protection of metals and physical chemistry of surfaces Vol. 52; no. 6; pp. 1093 - 1099
• Main Authors: Aliofkhazraei, M., Gharabagh, R. Shoja, Teimouri, M., Ahmadzadeh, M., Hasannejad, H., Seyfoori, A.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-11-2016; Springer Nature B.V
• Subjects: Cerium; Characterization and Evaluation of Materials; Chemistry and Materials Science; Coating; Corrosion; Corrosion and Coatings; Corrosive wear; Electrolytes; Industrial Chemistry/Chemical Engineering; Inorganic Chemistry; Materials Science; Metallic Materials; Morphology; Physicochemical Problems of Materials Protection; Roughness; Tribology; Wear
• ISSN: 2070-2051; 2070-206X
• DOI: 10.1134/S2070205116060046

Cerium containing coatings are interested because of corrosion and wear resistance characteristics, in another point valve metals have the ability to be treated with plasma electrolytic oxidation (PEO). Different cerium sources, from base metal, pretreatment, post treatment and electrolyte are implemented for Mg alloys. In this research Ti substrates was treated via PEO in less studied, cerium chloride containing electrolytes. Effect of cerium ion concentration was studied on morphology, corrosion and wear properties using SEM, FTIR, polarization, EIS, pin on disk experiments. It was observed that cerium participates in coatings slightly and there is an optimum content for cerium ions in electrolytes which results in improved corrosion and wear properties, mostly from modifying coating roughness and morphology. Addition of cerium ions to electrolyte, first decreases and then increases coating roughness and coefficient of friction.