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KINETICS OF TUNGSNET DISULFIDE NANOPOWDER SYNTHESIS UNDER SELF-PROPAGATING HIGH TEMPERATURE SYNTHESIS CONDITIONS

Irtegov Y.A, Azhgikhin M.I, Korobochkin V.V
Tungsten nanopowder with elementary sulfur combustion rate and conversion ratio in combustion wave dependence on argon pressure and on sulfur excess under constant pressure were studied. Synthesis was self-propagating high temperature synthesis (SHS). Stoichiometric mixture combustion process photographs based on which combustion rate was determined were represented . Effect of sulfur excess in reaction mixture (from 0 to 20 wt. % ) on combustion temperature was studied under constant pressure. It was found that sulfur excess increasing under 3 МPa decreased combustion rate from 0.27 to 0.12 sm/s. Determined combustion rate dependence on conversion ratio tungsten nanopowder and sulfur is equal to parabolical oxidation law. Tungsten nanopowder and sulfur reaction energy activation under self-propagating high temperature synthesis conditions is equal to 90.1 kJ/mol that points to simultaneous rate process limitation on chemical reaction and sulfur diffusion.

Библиографическая ссылка

Иртегов Ю.А, Ажгихин М.И, Коробочкин В.В КИНЕТИКА ПРОЦЕССА СИНТЕЗА НАНОРАЗМЕРНОГО ДИСУЛЬФИДА ВОЛЬФРАМА В УСЛОВИЯХ САМОРАСПРОСТРАНЯЮЩЕГОСЯ ВЫСОКОТЕМПЕРАТУРНОГО СИНТЕЗА // Научное обозрение. Химические науки. 2020. № 1. С. 14-15;
URL: https://science-chemistry.ru/en/article/view?id=11 (дата обращения: 28.07.2026).