Passivation of Compacted Samples Made of Pyrophoric Iron Nanopowders during Their Interaction with Air

Autor:	N. I. Abzalov, Nickolai M. Rubtsov, M. I. Alymov, S. G. Vadchenko, V. A. Zelenskii, F. F. Galiev, Roman A. Kochetkov, I. D. Kovalev, Boris S. Seplyarskii
Rok vydání:	2021
Předmět:	Materials science Argon Passivation General Chemical Engineering Metallurgy General Physics and Astronomy Energy Engineering and Power Technology chemistry.chemical_element General Chemistry Combustion Pyrophoricity Fuel Technology chemistry Experimental methods
Zdroj:	Combustion, Explosion, and Shock Waves. 57:326-333
ISSN:	1573-8345 0010-5082
Popis:	Various macrokinetic modes of interaction (self-ignition or combustion) of compact samples from nonpassivated (pyrophoric) and passivated iron nanopowders with air are under study. Experiments show that the modes of interaction with air depend on the type of the used gaseous medium (argon or air), previously containing weighting cups with samples, and on how long the bottles remain in air. The possibility of passivation of pressed samples from pyrophoric iron nanopowder is experimentally established for the first time in the case where the weighting cups with samples remain in air. Various experimental methods are used to investigate the sample heating dynamics and the effect of density inhomogeneity along the length of the sample. It is revealed that pyrophoric samples are heated nonuniformly, although heating begins simultaneously over the entire surface of the sample.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3abe61c143032e947cd1c4ca0e4ed643 https://doi.org/10.1134/s0010508221030072 Zobrazit plný text záznamu Plný text ve formátu PDF