Article (Scientific journals)
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
Maho, Anthony; Delhalle, Joseph; Mekhalif, Zineb
2013In Electrochimica Acta, 89 (0), p. 346 - 358
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Keywords :
Nitinol
Abstract :
[en] 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.
Disciplines :
Chemistry
Author, co-author :
Maho, Anthony  ;  Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP > Chimie > CES
Delhalle, Joseph;  Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP > Chimie > CES
Mekhalif, Zineb;  Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP > Chimie > CES
Language :
English
Title :
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
Publication date :
2013
Journal title :
Electrochimica Acta
ISSN :
0013-4686
Publisher :
Elsevier, United Kingdom
Volume :
89
Issue :
0
Pages :
346 - 358
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 July 2014

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