Effect of bio-functional MAO layers on the electrochemical behaviour of highly porous Ti

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Alves, AC (Author) Other; Costa, AI (Author) Other; Toptan, F (Author) Other; Alves, JL (Author) Other; Leonor, I (Author) Other; Ribeiro, E (Author) Other; Rui Reis (Author) Other; Pinto, AMP (Author) Other; Fernandes, JCS (Author) Other

Journal

Title: Surface and Coatings Technology

Vol. 386

ISSN: 0257-8972

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 17 Citations

Scopus - 19 Citations

Other information

Authenticus ID: P-00R-RKW

DOI: 10.1016/j.surfcoat.2020.125487

Abstract (EN): Ti foams are attractive for orthopaedic applications due to reduced Young's modulus and ability of bone ingrowth. However, poor corrosion behaviour and lack of bioactivity are yet to be overcome. In the present work, highly porous Ti samples were processed by powder metallurgy with space holder technique and bio-functionalized by micro-arc oxidation, resulting in nano/micro structured TiO2 surfaces containing bioactive elements. The electrochemical behaviour of these bio-functionalized highly porous Ti surfaces was evaluated through potentiodynamic polarization and EIS in physiological solution at body temperature. Results showed that bio-functionalization improved the corrosion behaviour of highly porous Ti. However, increased macro-porosity led to an increased corrosion rate.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11