| ŠEVČÍKOVÁ, Jana, Denisa BÁRTKOVÁ, Monika PÁVKOVÁ GOLDBERGOVÁ, Monika KUBĚNOVÁ, JIří ČERMÁK, Jan FRENZEL, Adam WEISER and Antonín DLOUHÝ. On the Ni-Ion release rate from surfaces of binary NiTi shape memory alloys. Applied Surface Science. Amsterdam: Elsevier Science BV., 2018, vol. 427, 1 January 2018, p. 434-443. ISSN 0169-4332. Available from: https://dx.doi.org/10.1016/j.apsusc.2017.08.235. |
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@article{1394266,
author = {Ševčíková, Jana and Bártková, Denisa and Pávková Goldbergová, Monika and Kuběnová, Monika and Čermák, JIří and Frenzel, Jan and Weiser, Adam and Dlouhý, Antonín},
article_location = {Amsterdam},
article_number = {1 January 2018},
doi = {http://dx.doi.org/10.1016/j.apsusc.2017.08.235},
keywords = {Hydrogen soaking; Ni-ion release; NiTi bio-compatibility; NiTi surface passivation; Scanning transmission electron microscopy},
language = {eng},
issn = {0169-4332},
journal = {Applied Surface Science},
title = {On the Ni-Ion release rate from surfaces of binary NiTi shape memory alloys},
volume = {427},
year = {2018}
}
TY - JOUR
ID - 1394266
AU - Ševčíková, Jana - Bártková, Denisa - Pávková Goldbergová, Monika - Kuběnová, Monika - Čermák, JIří - Frenzel, Jan - Weiser, Adam - Dlouhý, Antonín
PY - 2018
TI - On the Ni-Ion release rate from surfaces of binary NiTi shape memory alloys
JF - Applied Surface Science
VL - 427
IS - 1 January 2018
SP - 434-443
EP - 434-443
PB - Elsevier Science BV.
SN - 01694332
KW - Hydrogen soaking
KW - Ni-ion release
KW - NiTi bio-compatibility
KW - NiTi surface passivation
KW - Scanning transmission electron microscopy
N2 - The study is focused on Ni-ion release rates from NiTi surfaces exposed in the cell culture media and human vascular endothelial cell (HUVEC) culture environments. The NiTi surface layers situated in the depth of 70 um below a NiTi oxide scale are affected by interactions between the NiTi alloys and the bio-environments. The finding was proved with use of inductively coupled plasma mass spectrometry and electron microscopy experiments. As the exclusive factor controlling the Ni-ion release rates was not only thicknesses of the oxide scale, but also the passivation depth, which was two-fold larger. Our experimental data strongly suggested that some other factors, in addition to the Ni concentration in the oxide scale, admittedly hydrogen soaking deep below the oxide scale, must be taken into account in order to rationalize the concentrations of Ni-ions released into the bio-environments. The suggested role of hydrogen as the surface passivation agent is also in line with the fact that the Ni-ion release rates considerably decrease in NiTi samples that were annealed in controlled hydrogen atmospheres prior to bio-environmental exposures.
ER -
ŠEVČÍKOVÁ, Jana, Denisa BÁRTKOVÁ, Monika PÁVKOVÁ GOLDBERGOVÁ, Monika KUBĚNOVÁ, JIří ČERMÁK, Jan FRENZEL, Adam WEISER and Antonín DLOUHÝ. On the Ni-Ion release rate from surfaces of binary NiTi shape memory alloys. \textit{Applied Surface Science}. Amsterdam: Elsevier Science BV., 2018, vol.~427, 1 January 2018, p.~434-443. ISSN~0169-4332. Available from: https://dx.doi.org/10.1016/j.apsusc.2017.08.235.
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