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

Result code in 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>
Alternative codes found
RIV/68081723:_____/18:00485204
Result on the web
<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>

Result language
angličtina
Original language name
On the Ni-Ion release rate from surfaces of binary NiTi shape memory alloys
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
30105 - Physiology (including cytology)

Project
<a href="/en/project/GA15-16336S" target="_blank" >GA15-16336S: Interstitial impurities in NiTi-based shape memory alloys</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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