Tribocorrosion behaviour of hot pressed CoCrMo - HAP biocomposites

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Doni, Z (Author) Other; Alves, AC (Author) Other; Toptan, F (Author) Other; Rocha, LA (Author) Other; Buciumeanu, M (Author) Other; Palaghian, L (Author) Other; Silva, FS (Author) Other

Journal

Title: Tribology International

Vol. 91

Pages: 221-227

ISSN: 0301-679X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 11 Citations

Other information

Authenticus ID: P-00G-N9N

DOI: 10.1016/j.triboint.2015.04.009

Abstract (EN): Bioactivity of CoCrMo can be enhanced by incorporation of hydroxyapatite (HAP), but the poor mechanical properties of HAP is the most serious hindrance for its application on load-bearing implants, especially when exposed to corrosion and wear, simultaneously. Thus, the present work aims to investigate the tribocorrosion behaviour of CoCrMo - HAP composites. The tribocorrosion tests were performed under open circuit potential (OCP) in 8 g/l NaCl at 37 degrees C by using a ball-on-plate tribometer. Results suggested that HAP particle addition increased the corrosion rate due to localized corrosion taking place on the pore sites near the matrix/reinforcement interface. However, under tribological action, composite samples presented relatively lower tendency to corrosion and lower coefficient of friction values.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7