Počet záznamů: 1
On the Ni-Ion release rate from surfaces of binary NiTi shape memory alloys
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SYSNO ASEP 0485204 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název On the Ni-Ion release rate from surfaces of binary NiTi shape memory alloys Tvůrce(i) Ševčíková, J. (CZ)
Bártková, Denisa (UFM-A)
Goldbergová, M. (CZ)
Kuběnová, Monika (UFM-A)
Čermák, Jiří (UFM-A) RID, ORCID
Frenzel, J. (DE)
Weiser, Adam (UFM-A) ORCID
Dlouhý, Antonín (UFM-A) RID, ORCIDCelkový počet autorů 8 Zdroj.dok. Applied Surface Science. - : Elsevier - ISSN 0169-4332
Roč. 427, JAN (2018), s. 434-443Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova NiTi bio-compatibility ; Ni-ion release ; NiTi surface passivation ; Hydrogen soaking ; Scanning transmission electron microscopy Vědní obor RIV JG - Hutnictví, kovové materiály Obor OECD Materials engineering CEP GA15-16336S GA ČR - Grantová agentura ČR Institucionální podpora UFM-A - RVO:68081723 UT WOS 000415219100053 EID SCOPUS 85028989362 DOI 10.1016/j.apsusc.2017.08.235 Anotace 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 µm 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.
Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2019
Počet záznamů: 1