Author： Bégin-Colin S. Mocellin A. Stebut J.V. Bordji K. Mainard D.
Publisher： Springer Publishing Company
ISSN： 0022-2461
Source： Journal of Materials Science, Vol.33, Iss.11, 1998-06, pp. : 2837-2843
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Abstract
Alumina is widely used as a biomaterial because of its high biocompatibility and its good mechanical properties except toughness. In this study, a composite material Al_2O_3–TiN is considered as an alternative, the addition of TiN improving the mechanical properties of alumina. The wear behaviour of Al_2O_3 and Al_2O_3–TiN in aqueous solutions simulating living environments has been thus compared using a pin on disc wear-testing machine. The results show that the mechanisms of material removal during wear are different. For alumina, a mechanical wear mechanism is observed, reduced by the lubricating action of the wet media, and alumina–TiN is worn by a combination of tribochemical and abrasive effects.
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