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Title: Influence of calcium acetate concentration in electrolyte on tribocorrosion behaviour of MAO treated titanium
Authors: Sousa, Luis
Mendes, Ana Rita
Pinto, Ana Maria Pires
Toptan, Fatih
Alves, Alexandra Cruz
Universidade do Minho
Universidade do Minho
Universidade do Minho
Izmir Institute of Technology
Universidade do Minho
Keywords: Micro-arc oxidation
Issue Date: Dec-2021
Publisher: MDPI Multidisciplinary Digital Publishing Institute
Abstract: Ti-based materials are widely used for dental and orthopaedic implant applications due to their adequate mechanical properties, corrosion behaviour and biocompatibility. However, these materials are biologically inert and display poor wear resistance. In one of the most studied processes that aims to overcome these drawbacks, Ti surfaces are often covered by anodic oxide films with the incorporation of bioactive agents such as Ca and P. Although there are several works on the tribocorrosion behaviour of MAO-treated Ti surfaces, the influence of electrolyte composition on the corrosion kinetics under sliding is yet to be fully understood. In the present work, anodic oxide films were produced on cp-Ti surfaces with different calcium acetate concentrations in the electrolyte. Tribocorrosion behaviour was investigated by reciprocating sliding tests performed in 8 g/L NaCl solution at body temperature, under potentiostatic conditions. The results showed that higher concentrations of calcium acetate had a detrimental effect on tribocorrosion kinetics, however, they resulted in less mechanical damage due to alterations in the topography and structure of the MAO layer.
Description: This work was supported by Portuguese Foundation for Science and Technology (FCT), Portugal, under UIDB/04436/2020 project. L. Sousa was grateful for the PhD grant through NORTE-08-5369-FSE-000051 project
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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