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- Title
Electric-Spark Initiation of Nanothermites.
- Authors
Dolgoborodov, A. Yu.; Yankovskii, B. D.; Arsenov, P. A.; Anan'ev, S. Yu.; Grishin, L. I.; Val'yano, G. E.; Borodina, T. I.; Vakorina, G. S.
- Abstract
The electric-spark initiation of thermite mixtures based on nanosized powders of aluminum and copper oxide has been studied. Data on the effect of the electric spark discharge energy on the ignition delay were obtained. During the initiation of long cylindrical samples of mixtures with a low-current spark, two types of unsteady combustion were observed. The first type is characterized by the exponential establishment of constant burning rate. The second type is characterized by regions with incomplete reaction in the main propagation direction. To obtain steady combustion of a thermite mixture with a minimum ignition delay time, it is necessary to use a discharge energy of more than 5 mJ per 1 mm2 of the mixture surface.
- Subjects
ALUMINUM powder; ELECTRIC spark; ELECTRIC discharges; COPPER oxide; COPPER powder; COMBUSTION; ENERGY consumption
- Publication
Combustion, Explosion, & Shock Waves, 2023, Vol 59, Issue 4, p471
- ISSN
0010-5082
- Publication type
Article
- DOI
10.1134/S001050822304010X