On the Ni-Ion release rate from surfaces of binary NiTi shape memory alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14110%2F18%3A00100744" target="_blank" >RIV/00216224:14110/18:00100744 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/18:00485204

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.apsusc.2017.08.235" target="_blank" >http://dx.doi.org/10.1016/j.apsusc.2017.08.235</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsusc.2017.08.235" target="_blank" >10.1016/j.apsusc.2017.08.235</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the Ni-Ion release rate from surfaces of binary NiTi shape memory alloys

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

On the Ni-Ion release rate from surfaces of binary NiTi shape memory alloys

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30105 - Physiology (including cytology)

Projekt

<a href="/cs/project/GA15-16336S" target="_blank" >GA15-16336S: Intersticiální příměsi v tvarově-paměťových slitinách na bázi NiTi</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Surface Science

ISSN

0169-4332

e-ISSN

1873-5584

Svazek periodika

427

Číslo periodika v rámci svazku

1 January 2018

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

434-443

Kód UT WoS článku

000415219100053

EID výsledku v databázi Scopus

2-s2.0-85028989362