Detailed Information on Publication Record
2018
On the Ni-Ion release rate from surfaces of binary NiTi shape memory alloys
ŠEVČÍKOVÁ, Jana, Denisa BÁRTKOVÁ, Monika PÁVKOVÁ GOLDBERGOVÁ, Monika KUBĚNOVÁ, JIří ČERMÁK et. al.Basic information
Original name
On the Ni-Ion release rate from surfaces of binary NiTi shape memory alloys
Authors
ŠEVČÍKOVÁ, Jana (203 Czech Republic, belonging to the institution), Denisa BÁRTKOVÁ (203 Czech Republic), Monika PÁVKOVÁ GOLDBERGOVÁ (203 Czech Republic, guarantor, belonging to the institution), Monika KUBĚNOVÁ (203 Czech Republic), JIří ČERMÁK (203 Czech Republic), Jan FRENZEL (203 Czech Republic), Adam WEISER (203 Czech Republic) and Antonín DLOUHÝ (203 Czech Republic)
Edition
Applied Surface Science, Amsterdam, Elsevier Science BV. 2018, 0169-4332
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
30105 Physiology
Country of publisher
Netherlands
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 5.155
RIV identification code
RIV/00216224:14110/18:00100744
Organization unit
Faculty of Medicine
UT WoS
000415219100053
Keywords in English
Hydrogen soaking; Ni-ion release; NiTi bio-compatibility; NiTi surface passivation; Scanning transmission electron microscopy
Tags
International impact, Reviewed
Změněno: 10/2/2019 17:06, Soňa Böhmová
Abstract
V originále
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.
Links
GA15-16336S, research and development project |
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