Email this article Combustion transfer through inert barriers in high-porosity nanotermites
- Authors: Kirilenko V.G.1, Dolgoborodov A.Y.1,2,3, Brazhnikov M.A.1
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Affiliations:
- N. N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
- Joint Institute for High Temperatures of the Russian Academy of Sciences
- National Research Nuclear University MEPhI
- Issue: Vol 16, No 3 (2023)
- Pages: 83-92
- Section: Articles
- URL: https://journals.rcsi.science/2305-9117/article/view/289630
- DOI: https://doi.org/10.30826/CE23160308
- EDN: https://elibrary.ru/MUTZCD
- ID: 289630
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Abstract
The paper presents the results of an experimental study using high-speed video recording of the combustion propagation through inert barriers in Al/CuO nanothermites placed in closed shells (tubes) made of quartz glass. Viscose and air gaps were used as inert barriers. When the luminous front (which the present authors associate with the burning rate) passes through the barrier made of viscose, its propagation velocity drops noticeably but after it enters the nanothermite, its propagation velocity recovers to the original value. As for the air gaps, when the luminous front expands into the air, its speed increases by a factor of 2–3, then the normal mode of propagation is established. The presence of air gaps in a tube with a thermite mixture makes it possible to significantly reduce the mass of this mixture with a slight decrease in the average burning rate compared to a completely filled tube of the same length.
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About the authors
Vladimir G. Kirilenko
N. N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
Author for correspondence.
Email: vladkiril@gmail.com
Candidate of Science in physics and mathematics, senior research scientist
Russian Federation, MoscowAlexander Yu. Dolgoborodov
N. N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences; Joint Institute for High Temperatures of the Russian Academy of Sciences; National Research Nuclear University MEPhI
Email: aldol@ihed.ras.ru
Doctor of Science in physics and mathematics, chief research scientist, head of laboratory, teacher
Russian Federation, Moscow; Moscow; MoscowMichael A. Brazhnikov
N. N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
Email: birze@inbox.ru
Candidate of Science in pedagogy, senior research scientist
Russian Federation, MoscowReferences
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