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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.19 SNIP: 0.341 CiteScore™: 0.43

ISSN Druckformat: 1093-3611
ISSN Online: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.2018025484
pages 289-298

THERMOGRAVIMETRIC ANALYSIS OF THE (FeCoZr)x(CaF2)(100–x) NANOCOMPOSITE

Vitalii A. Bondariev
Department of Electrical Devices and High Voltage Technology, Lublin University of Technology, 38D Nadbystrzycka Str., Lublin, 20–618, Poland
Pawel Zukowski
Department of Electrical Devices and High Voltage Technology, Lublin University of Technology, ul. Nadbystrzycka 38D, Lublin, 20–618, Poland
V. G. Luhin
Belarusian State Technological University, 13a Sverdlov Str., Minsk, 220006, Belarus
I. V. Voitov
Belarusian State Technological University, 13a Sverdlov Str., Minsk, 220006, Belarus

ABSTRAKT

This paper presents results of thermogravimetric-DTG/DSC study of the results of the TEM and EDX analysis of the structure and composition of the metal–dielectric (FeCoZr)x(CaF2)(100–x) nanocomposite. A number of nanocomposite samples were produced by ion-beam sputtering in a pure argon atmosphere. The TG analysis showed that the mass of the nanocomposite changes in two stages. The first stage, a decrease, is related to the evaporation of moisture and other volatiles from the surface of the sample that settle on it during storage. Then, a rapid increase in the mass is related to the oxidation of the metallic phase. The heating of samples at a higher temperature (T > 620°C) leads to the formation of an oxide layer on the surface of the metallic phase nanoparticles which consist of Fe and Co. The number of oxygen atoms per atom of the metallic phase increases with the metallic phase content x of samples and for x = 45.4 at.% it reaches about 0.75, for x = 57 at.% it is about 0.98, and for x = 68 at.% it is about 1.08. On this basis, a structural-phase model of the state of nanograin layers after high-temperature treatments was proposed.


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