Artículos de revistas
Tribocorrosion behaviour of hot pressed CoCrMo−HAP biocomposites
Fecha
2015-11-01Registro en:
Tribology International, v. 91, p. 221-227.
0301-679X
10.1016/j.triboint.2015.04.009
2-s2.0-84928716405
2-s2.0-84928716405.pdf
Autor
Azurém
“Dunarea de Jos” University of Galati
Universidade Estadual Paulista (Unesp)
Institución
Resumen
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 ºC 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.