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CHEMISTRY AND MATERIAL SCIENCE
Plasma-chemical synthesis of nanocrystalline “core-shell” structures TiN–Mo–Co
Yuliya A. Avdeevaa, Irina V. Luzhkovaa, Aidar M. Murzakaevb, Alexey N. Ermakova a Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, Ekaterinburg, Russia
b Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, Ekaterinburg, Russia
Аннотация:
In this work, the possibilities of formation of nanocrystalline powders based on titanium nitride with participation of Mo and Co under conditions of plasma-chemical synthesis have been studied. Synthesis was performed according to the plasma recondensation scheme using low-temperature nitrogen plasma. All the obtained highly dispersed powders were certified by X-ray diffraction and scanning electron microscopy. The characteristics of the disperse composition of the recondensed TiN–Mo–Co products were determined by the calculation based on the pycnometric density and specific surface area data.
The possibility of formation of a “core-shell” structure was confirmed using chemical methods by etching ultraand nanodispersed powders in solutions of dilute HCl to remove the cobalt shell and concentrated hydrogen peroxide H$_2$O$_2$ to neutralize metallic Mo.
Based on the information about “quasi-equilibrium state” of the products of plasma-chemical synthesis in a low-temperature gas plasma, a chemical model for the formation of nanocrystalline particles is proposed.
Ключевые слова:
core-shell structure, titanium nitride, plasma-chemical synthesis, temperature barrier, phase formation.
Поступила в редакцию: 20.09.2022 Исправленный вариант: 28.11.2022 Принята в печать: 05.12.2022
Образец цитирования:
Yuliya A. Avdeeva, Irina V. Luzhkova, Aidar M. Murzakaev, Alexey N. Ermakov, “Plasma-chemical synthesis of nanocrystalline “core-shell” structures TiN–Mo–Co”, Наносистемы: физика, химия, математика, 14:1 (2023), 132–141
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/nano1172 https://www.mathnet.ru/rus/nano/v14/i1/p132
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