Augmentation of Aluminum and Boron Ignition
| Autor: | F. K. Bulanin, A. E. Sidorov, M. A. Starikov, V. G. Shevchuk, N. I. Poletaev |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
inorganic chemicals
chemistry.chemical_classification Materials science 010304 chemical physics General Chemical Engineering General Physics and Astronomy Energy Engineering and Power Technology Salt (chemistry) chemistry.chemical_element General Chemistry 01 natural sciences 010406 physical chemistry 0104 chemical sciences law.invention Ignition system Reaction rate Fuel Technology Chemical engineering chemistry law Aluminium Scientific method 0103 physical sciences Boron Critical condition |
| Zdroj: | Combustion, Explosion, and Shock Waves. 57:190-195 |
| ISSN: | 1573-8345 0010-5082 |
| DOI: | 10.1134/s0010508221020076 |
| Popis: | Effect of K2CO3 and KCl additives on the process of high-temperature oxidation and ignition of conglomerates of powdered boron and aluminum particles and on the critical conditions for the ignition of particle–gas mixtures of these metals is studied experimentally. It is revealed that the mixtures of boron and aluminum particles covered (encapsulated) with salts ignite at temperatures lower than the ignition temperatures of mechanical mixtures of metals with these salts in appropriate proportions and significantly lower ignition temperatures of pure boron and aluminum. This indicates the active role of salts in the process of heterogeneous ignition. It is established that, for boron conglomerates, the accelerating effect of salt additives on the oxidation of conglomerates is noticeable at all investigated concentrations and compositions starting from 1% (by weight). For aluminum, an increase in the reaction rate is noticeable only for KCl additives at concentrations of 3% and above. |
| Databáze: | OpenAIRE |
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