Tribocorrosion behavior of beta-type Ti-15Zr-based alloys

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Correa, DRN (Author) Other; Kuroda, PAB (Author) Other; Grandini, CR (Author) Other; Rocha, LA (Author) Other; Oliveira, FGM (Author) Other; Alves, AC (Author) Other; Toptan, F (Author) Other

Journal

Title: Materials Letters

Vol. 179

Pages: 118-121

ISSN: 0167-577X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 12 Citations

Scopus - 52 Citations

Other information

Authenticus ID: P-00K-HR8

DOI: 10.1016/j.matlet.2016.05.045

Abstract (EN): Titanium alloys have different biomedical applications, due to their favorable mechanical, electrochemical and biological properties. However, when applied as orthopedical or dental implants, the metallic material is submitted to intense mechanical wear in a corrosive environment. In general, tribocorrosion behavior is disregarded during the development of new titanium alloys, which is focused on better mechanical or biological compatibility. In this paper, the tribocorrosion behavior of novel titanium alloys, Ti-15Zr-7.5Mo and Ti-15Zr-15Mo, for biomedical applications was investigated. Tribocorrosion tests were performed against an alumina sphere, with OCP and COF monitored during sliding. Average total wear volume was calculated by tridimensional images with confocal microscopy. The results indicated that both alloys present tribocorrosion behavior superior to cp-Ti, being abrasion the main wear mechanism. Wear volume analysis showed that the Ti-15Zr-7.5Mo presented the better tribocorrosion properties, besides the higher Young's modulus.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4