Tribocorrosion behaviour of hot pressed CoCrMo - HAP biocomposites

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

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

Revista

Título: Tribology International

Vol. 91

Páginas: 221-227

ISSN: 0301-679X

Editora: Elsevier

Indexação

ISI Web of Knowledge - 4 Citações

Scopus - 11 Citações

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7