Title: Stability of Ni in nitinol oxide surfaces
Authors: Tian, He ×
Schryvers, Dominique
Liu, Di
Jiang, Qing
Van Humbeeck, Jan #
Issue Date: Feb-2011
Publisher: Elsevier
Series Title: Acta Biomaterialia vol:7 issue:2 pages:892-899
Abstract: The stability of Ni in titanium oxide surface layers on nitinol wires known to release certain amounts of Ni was investigated by first principles density functional theory and transmission electron microscopy. The oxides were identified as a combination of TiO and TiO2 depending on the thickness of the layer. The calculations indicate that free Ni atoms can exist in TiO at ambient temperature while Ni particles form in TiO2, which was confirmed by the transmission electron microscopy observations. The results are discussed with respect to surface stability and Ni release due to free Ni atoms and Ni particles. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
ISSN: 1742-7061
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
× corresponding author
# (joint) last author

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