Formation of titanium-cobalt nitride Ti0.7Co0.3N under plasma-chemical synthesis conditions in a low-temperature nitrogen plasma
https://doi.org/10.17586/2220-8054-2021-12-5-641-649
Abstract
Nanocompositions with “core-shell” structure are of interest in different areas of materials science and solid state chemistry, since, along with traditional refractory components in the form of carbides or nitrides and individual metals (Ni, Co), phases of mixed composition of the type Me11−xMe2xN (Me1 – a refractory element of IV-VIA subgroup, Me2 – Ni or Co) are formed during synthesis within one highly dispersed particle. It should be noted that such multicomponent phase components are metastable and cannot be obtained in an individual state. At the same time, phases of the Me11−xMe2xN type are formed in systems with participation of nitride compounds during extreme processing. In the present work, the technology of plasma-chemical synthesis with subsequent recondensation of gaseous nitrogen in a rotating cylinder was used.
The work is aimed at obtaining metastable complex-substituted titanium-cobalt nitride Ti0.7Co0.3N in the framework of nano- and ultradispersed Ti(Mo)C–Co “core-shell” structures. All phase components of the claimed compositions were determined by X-ray diffraction. Additionally, Ti(Mo)C–Co nanoparticles were studied by high-resolution transmission electron microscopy and electron diffraction. It was determined that Ti0.7Co0.3N has a strongly deformed stressed state, as evidenced by a single reflection (101) on the X-ray diffraction pattern. The paper also considers some aspects of crystal chemical design of Ti0.7Co0.3N obtained in the course of structural and morphological certification of the Ti(Mo)C–Co nanocomposition.
Keywords
titanium-cobalt nitride,
core-shell structure,
plasma recondensation,
low temperature plasma,
X-ray phase analysis,
high-resolution transmission electron microscopy
Supporting agencies: The work was carried out in accordance with the state assignment for the Institute of Solid State Chemistry of the Ural Branch of the Russian Academy of Sciences (theme No 0397-2019-0003 “New functional materials for promising technologies: synthesis, properties, spectroscopy and computer simulation”). The authors are grateful to Dr. A. M. Murzakaev, Ph. D., senior researcher of the Laboratory of impulse processes of the Institute of Electrophysics, Ural Branch of the Russian Academy of Sciences, for conducting electron microscopic studies of nanocrystalline Ti(Mo)C–Co compositions under conditions of high-resolution transmission electron microscopy.
About the Authors
Yu. A. Avdeeva
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Russian Federation
Russian Federation
Pervomaiskaya Street, 91, Ekaterinburg, 620990
I. V. Luzhkova
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Russian Federation
Russian Federation
Pervomaiskaya Street, 91, Ekaterinburg, 620990
A. N. Ermakov
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Russian Federation
Russian Federation
Pervomaiskaya Street, 91, Ekaterinburg, 620990
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Review
For citations:
Avdeeva Yu.A., Luzhkova I.V., Ermakov A.N. Formation of titanium-cobalt nitride Ti0.7Co0.3N under plasma-chemical synthesis conditions in a low-temperature nitrogen plasma. Nanosystems: Physics, Chemistry, Mathematics. 2021;12(5):641-649. https://doi.org/10.17586/2220-8054-2021-12-5-641-649
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