Local structure and medium-range order in a glassy Ti-Ta-based surface alloy after low-temperature annealing studied by electron nano-beam diffraction

Semin, V.O.; Gudimova, E. Yu.; Нейман, А. А.; D'yachenko, F.A.; Meisner, L. L.

doi:10.1016/j.matchar.2021.110967

Cited by 4 publications

(2 citation statements)

References 92 publications

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“…This phenomenon could be associated with melting of the surface layer. Concerning the thermal stability of the obtained amorphous transition layer, it has been expected that this structure is preserved upon heating by minimum of hundreds of degrees, since a similar pattern was observed for a Ti-Ta-Ni SA synthesized by the authors of [12].…”

Section: Resultssupporting

confidence: 65%

Synthesis of the Fe–Cr–Al–Zr Surface Alloy with an Amorphous Transition Layer

et al. 2023

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A two-layer Fe-Cr-Al-Zr surface alloy was synthesized on a zirconium substrate by magnetron sputtering and subsequent low-energy high-current electron-beam (LEHCEB) processing. Thicknesses of the top Fe69Cr20Al11 (at.%) relatively large-grained (~1 µm) and transition Fe-Zr Cr-Al amorphous layers were about 0.7 and 0.6 µm, respectively. In turn, the amorphous layer consisted of two Fe64-54Zr8-22Cr21-17Al8-7 and Fe40-16Zr42-78Cr12-4Al6-2 (at.%) sublayers, differing in both zirconium and iron concentrations in wide ranges, which were separated by another nanocrystalline interlayer. The Fe-Cr-Al-Zr surface alloy serve as a diffusion barrier, preventing interaction of the zirconium substrate with oxygen from an environment. It was thermally stable up to ≈1173 K.

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Section: Resultssupporting

confidence: 65%

Synthesis of the Fe–Cr–Al–Zr Surface Alloy with an Amorphous Transition Layer

et al. 2023

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“…Our previous research identified the effects of the argon pressure, substrate bias voltage, and distance between the plasma generator and substrate, as well as, magnetic field, and polyphenyl methylsiloxane flow rate on the structure and properties of the a-C:H:SiO x coating [ 33 , 34 , 35 , 36 , 37 , 38 ]. These dependences helped to optimize the a-C:H:SiO x coating deposition process in order to acquire high hardness, a low friction coefficient, a low wear rate, and appropriate corrosion resistance [ 23 , 31 , 32 ].…”

Section: Resultsmentioning

confidence: 99%

Endothelial Cell Behavior and Nitric Oxide Production on a-C:H:SiOx-Coated Ti-6Al-4V Substrate

Хлусов

Grenadyorov

Solovyev

et al. 2023

IJMS

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This paper focuses on the surface modification of the Ti-6Al-4V alloy substrate via a-C:H:SiOx coating deposition. Research results concern the a-C:H:SiOx coating structure, investigated using transmission electron microscopy and in vitro endothelization to study the coating. Based on the analysis of the atomic radial distribution function, a model is proposed for the atomic short-range order structure of the a-C:H:SiOx coating, and chemical bonds (C–O, C–C, Si–C, Si–O, and Si–Si) are identified. It is shown that the a-C:H:SiOx coating does not possess prolonged cytotoxicity in relation to EA.hy926 endothelial cells. In vitro investigations showed that the adhesion, cell number, and nitric oxide production by EA.hy926 endothelial cells on the a-C:H:SiOx-coated Ti-6Al-4V substrate are significantly lower than those on the uncoated surface. The findings suggest that the a-C:H:SiOx coating can reduce the risk of endothelial cell hyperproliferation on implants and medical devices, including mechanical prosthetic heart valves, endovascular stents, and mechanical circulatory support devices.

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