from 01.01.2004 to 01.01.2024
Samara, Samara, Russian Federation
VAC 2.6.17 Материаловедение
UDK 666.77 Химически стойкие грубокерамические массы и изделия. Кислото- и коррозионностойкие керамические изделия
UDK 666.798.2 Металлокерамические смеси. Керметы
BBK 342 Металловедение
The objective is to study the possibility of ob-taining titanium silicide using the azide technology of self-propagating high-temperature synthesis (SHS-Az) in silicon-titanium halide-sodium azide system. The task to which the paper is devoted is to find the optimal composition of the charge, which combus-tion gives the opportunity to obtain titanium halide by SHS-Az method. Research methods: the study of the titanium sil-icide synthesis in powder is carried out in the mode of solid-flame combustion in SHS-Az laboratory reactor. The synthesized powders are subjected to studies al-lowing to define the phase composition and structure. The studies are carried out using a diffractometer and a scanning electron microscope. The novelty of the work is in synthesizing tita-nium silicide not only by a new method in the mode of high-temperature combustion of the heterogeneous silicon-titanium halide-sodium azide system, but also by obtaining a powder with close values to the range of nanoparticles. Study results of obtaining titanium silicide by SHS-Az method from the heterogeneous silicon-titanium halide-sodium azide system show that the target product is a finely dispersed mixture of particles of equal shape but of different phase composition: Ti5Si3, TiSi2, TiN, Si, Ti. The average particle size is equal to 150-200 nm. Conclusions: it is found that Ti5Si3 and TiSi2 ti-tanium silicides can be obtained in the combustion mode by SHS-Az method from silicon-titanium halide-sodium azide system.
titanium silicide, halide, sodium azide, synthesis
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2. Yeh CL, Chen WH, Hsu CC. Formation of titanium silicides Ti5Si3 and TiSi2 by self-propagating combustion synthesis. Journal of Alloys and Compounds. 2007;432:90-95.
3. Chumakova YuA, Knyazev AA, Pribytkova GA. Influence of excess titanium in Ti-Si reaction mixture on the composite synthesis in the combustion wave. Teoreticheskie Osnovi Khimicheskoy Tekhnologii. 2021;55(3):375-389.
4. Pribytkov GA, Krinitsyn MG, Korzhova VV. Synthesis and structure of SHS composites in Ti5Si3+Ti. Chemical Physics and Mesoscopy. 2002;22(3):269-280.
5. Kustov AD, Parfenov OG. Patent No. 2629121 Russian Federation, IPC C23C 16/42 (2006.01), C23C 16/44 (2006.01). Method for obtaining titanium silicides: No. 2016129333. 2017 Aug 24.
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8. Merzhanov AG, Mukasyan AS. Solid flame combustion. Moscow: TORUS PRESS; 2007.
9. Amosov AP, Bichurov GV. Azide technology of self-propagating high-temperature synthesis of micro- and nanopowders of nitrides: monograph. Moscow: Mashinostroye-1; 2007.
10. Bichurov GV, Shiganova LA (Kondratieva LA), Titova YuV. Azide technology of self-propagating high-temperature synthesis of micro- and nanopowders of nitride compositions: monograph. Moscow: Mashinostroye; 2012.
11. Kondratieva LA. Self-propagating high-temperature synthesis of powders of Si3N4-TiN, Si3N4-AlN, Si3N4-BN, AlN-BN, AlN-TiN, BN-TiN nitride compositions with the use of sodium azide and halide salts [dissertation]. [Samara (RF)]; Samara State Technical University; 2018.
12. Kondratieva LA. The role of tungsten helix in azide technology of self-propagating high-temperature synthesis. Journal of Technical Research. 2019;5(4):40-42.
13. Kondratieva LA. BP5/20 thermocouples for self-propagating high-temperature synthesis of nitrogen-containing products. Journal of Natural Science Research. 2019;4(3):2-6.
14. Kondratieva LA. Scheme of azide technology for self-propagating high-temperature synthesis of nitride powders. Journal of Technical Research. 2020;6(4):3-9.
15. Kondratieva LA. Silicon nitrides, titanium - titanium silicide compositions synthesized by SHS azide technology. Modern Materials, Equipment and Technologies. 2019;5(26):55-61.
16. Zakorzhevsky VV. Development of SHS technologies of Al, Si, Zr, Ti nitride powders and compositions based on them [dissertation]. [Chernogolovka (RF)]; ISMAN; 2022.
17. Kondratieva LA. Morphology and size study of the powder product obtained in combustion mode from silicon-titanium-containing systems. Modern Materials, Equipment and Technologies. 2019;5(26):50-54.
18. Kondratieva LA, Kerson IA, Bichurov GV. Si3N4-TiN composition synthesized in Si-NaN3-Na2TiF6 system in the mode of self-propagating high-temperature synthesis. Collection of Scientific Papers of the XVI International Scientific Conference, 2016 July 31: Trends in the development of science and education; Samara: L-Magazine publishing house: 2016. p. 30-32.
