Geodesic
Mechanism of formation of nanocrystalline particles with core-shell structure based on titanium oxynitrides with nickel in the process of plasma-chemical synthesis of TiNi in a low-temperature nitrogen plasma
Nanosistemy: fizika, himiâ, matematika, Tome 13 (2022) no. 2, pp. 212-219 Cet article a éte moissonné depuis la source Math-Net.Ru

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This paper presents the results of experiments, structural and morphological certification and modeling of ultrafine and nanocrystalline TiN-Ni "core-shell" structures obtained during plasma-chemical synthesis of industrially manufactured microcrystalline TiNi. Experiments on plasma-chemical synthesis were carried out by recondensation of ultrafine and nanocrystalline powders in a rotating cylinder of gaseous nitrogen. X- ray phase analysis and high-resolution transmission electron microscopy (HR TEM) showed the presence of refractory titanium compounds with nitrogen and metallic nickel, which are part of the core-shell structures, including the metastable, highly deformed complex nitride Ti$_{0.7}$Ni$_{0.3}$N of hexagonal modification. HR TEM studies showed the localization of phases determined by X-ray diffraction and confirmed the “core-shell” structure on the example of nanocrystalline TiN-Ni fraction. Based on the experimental results, we have developed a model of crystallization of TiN-Ni "core-shell" structures under the conditions of a rotating cylinder of gaseous nitrogen, where the crystallization rate is 10$^5$ $^\circ$C/s.
Keywords: titanium nickelide, nickel, plasma-chemical synthesis, low-temperature plasma, X-ray phase analysis, high-resolution transmission electron microscopy. 
@article{NANO_2022_13_2_a8,
     author = {Yuliya Avdeeva and Irina Luzhkova and Alexey N. Ermakov},
     title = {Mechanism of formation of nanocrystalline particles with core-shell structure based on titanium oxynitrides with nickel in the process of plasma-chemical synthesis of {TiNi} in a low-temperature nitrogen plasma},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {212--219},
     year = {2022},
     volume = {13},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2022_13_2_a8/}
}
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Yuliya Avdeeva; Irina Luzhkova; Alexey N. Ermakov. Mechanism of formation of nanocrystalline particles with core-shell structure based on titanium oxynitrides with nickel in the process of plasma-chemical synthesis of TiNi in a low-temperature nitrogen plasma. Nanosistemy: fizika, himiâ, matematika, Tome 13 (2022) no. 2, pp. 212-219. http://geodesic.mathdoc.fr/item/NANO_2022_13_2_a8/