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Thanks to excellent mechanical and biochemical properties, the nickel-titanium shape memory alloy (Nitinol) constitutes an increasingly praised platform material in dental, cardiovascular and orthopedic biomedical devices. In order to strengthen their protective abilities toward corrosion, to reinforce their biocompatibility and to confer them specific osseointegrative capacities, Nitinol plates are covered with a thin tantalum layer by electrodeposition in the 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid. XPS and SEM/EDX analyses highlight the chemical and morphological characteristics of the deposits: notably, these present an intrinsic dimpled nanometric structuration which is particularly remarkable considering the "soft" experimental conditions and very interesting for fundamental and applied bioactive perspectives. The present study investigates the specific and synergic effects of the Ni occurrence on the surface of the Nitinol substrates, the presence of fluorine species in the working bath, and the electrodeposition duration on the resulting formation process, morphology and chemical composition of the tantalum coating. Finally, samples are submitted to electrochemical characterizations and in vitro hydroxyapatite growth tests for a primary assessment of their corrosion resistance and osseoinductive features. © 2012 Elsevier Ltd. All Rights Reserved.
|Number of pages||13|
|Publication status||Published - 1 Feb 2013|
- 1-Butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid
FingerprintDive into the research topics of 'Study of the formation process and the characteristics of tantalum layers electrodeposited on Nitinol plates in the 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid'. Together they form a unique fingerprint.
- 1 Finished
Elaboration électrochimique de surfaces de tantale et de tantale/CNTs structurées et fonctionnelles sur substrats de nitinol en milieu liquide ionique
MAHO, A. & Mekhalif, Z.
1/10/10 → 31/05/14
Scanning electron microscope
Charles Nicaise (Manager) & Francesca Cecchet (Manager)Technological Platform Morphology - Imaging
Synthesis, Irradiation and Analysis of Materials (SIAM)
Pierre Louette (Manager), Julien Colaux (Manager), Alexandre Felten (Manager) & Jorge Humberto Mejia Mendoza (Manager)Technological Platform Synthesis, Irradiation and Analysis of Materials
Facility/equipment: Technological Platform