Tribocorrosion-resistant biofunctionalized Ti-Al2O3 composites

• Type: Article in International Scientific Journal
• Date: 2021

Authors

Sousa, L (Author) Other; Basilio, L (Author) Other; Alves, AC (Author) FEUP; Toptan, F (Author) Other

Journal

Title: Surface and Coatings Technology

Vol. 420

ISSN: 0257-8972

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-00V-1NS

DOI: 10.1016/j.surfcoat.2021.127329

Abstract (EN): Recent studies have shown that titanium matrix composites have potential for load-bearing biomedical implants due to their improved tribocorrosion behaviour compared to Ti and its alloys. However, lack of bioactivity remains as a concern due to bioinert Ti matrix and the fact that most reinforcement phases are also bioinert. In this work, biofunctionalized Ti-Al2O3 composites were produced by performing micro-arc oxidation treatment on the Ti-Al2O3 composites processed by hot-pressing technique. The overall microstructure consisted of Al2O3 particles dispersed within a biofunctionalized Ti matrix having a micro-porous structure rich in Ca and P elements. The corrosion behaviour of the composites was greatly improved after MAO treatment, whereas the tribocorrosion behaviour of the composites was also further improved after MAO treatment.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9