Tribocorrosion behaviour of bio-functionalized porous Ti surfaces obtained by two-step anodic treatment. (15th April 2020)

• Record Type: Journal Article
• Authors: Costa, A.I.; Sousa, L.; Alves, A.C.; Toptan, F.
• Is Part Of: Corrosion science. Volume 166(2020)
• Publication Date: 2020-04-15
• Subjects: Titanium -- Anodic treatment -- Micro-arc oxidation (MAO) -- Corrosion -- Tribocorrosion; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2020.108467
• Languages: English
• ISSNs: 0010-938X

Abstract

Graphical abstract: Highlights: Hierarchical porous structure with tailored chemical composition was obtained by a facile two-step anodic treatment. Hierarchical surfaces presented improved wettability, corrosion and tribocorrosion resistance. Wear-corrosion mechanisms involved in each bio-functionalization step is discussed. Abstract: A bio-functionalized porous surface was obtained on Ti by a two-step anodic treatment and its corrosion and tribocorrosion behaviour were evaluated. The first-step provided macro-porosity while the second-step, a bio-functionalization process by micro-arc oxidation (MAO), provided an oxide layer (anatase + rutile) with micro-pores and bio-active elements (Ca + P). Corrosion and tribocorrosion behaviour were improved due to the protective role given by the oxide layer formed on the second-step. Tribocorrosion mechanisms for the bio-functionalized porous structures are presented.