Description du projet :
Titanium and its alloys represent the main class of materials used for load-bearing medical devices such as dental and orthopaedic implants (e.g. hip and shoulder stems, acetabular cups, dental screws, etc). They are suited for these applications because of their biocompatibility, high corrosion resistance, low weight and good mechanical properties. In order to reduce a bone-implant stiffness mismatch and further improve mechanical performance, a new generation of titanium biomedical alloys with low elastic modulus was developed. However, they possess lower hardness and wear resistance. To improve wear resistance of titanium biomaterials, different surface treatments can be applied. Among them, a plasma electrolytic oxidation (PEO) is a promising technology as it improves several functionalities of the coated parts, like wear resistance, biocompatibility and osseointegration. PEO process of main commercial titanium alloys has been extensively investigated in the past. The proposed project aims at the comparative study of the PEO process of a new generation low elastic modulus titanium alloys for biomedical applications. It will be focused on theoretical aspects of the process as well as the practical issues related to their potential application in orthopaedic implants. As a final result, common features of different PEO processes will be defined in order to evaluate their potential of industrial implementation
Research team within HES-SO:
Journot Tony
, Banakh Oksana
, Cséfalvay Catherine
, Gay Pierre-Antoine
, Ramseyer Stephan
, Montandon Pierre-Alain
Partenaires académiques: State University of Chemical Technology; Ingénierie des surfaces; Banakh Oksana, Ingénierie des surfaces
Durée du projet:
01.07.2014 - 31.12.2017
Montant global du projet: 75'000 CHF
Statut: Completed
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