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<p>In creating energy-rich composites based on nanostructured silicon, it is topical to ensure stable characteristics of their combustion. In this connection, establishing conditions and mechanisms for the appearance of precursors, i.e., sources of ignition ahead of the front of a combustion wave and their influence on the course of the process, is of importance. In the work, the authors have presented the results of investigation into the combustion of the composites with combinations of their parameters using high-speed photography and the shadow method of visualization of disturbances in gas media at different pressures in the substrates with a wall thickness of 50 μm to 3 mm from materials with excellent acoustic impedance. Possible causes of formation of the precursors have been indicated, in particular, the instability of the burning velocity of the composites and the low humidity of the sodium-perchlorate monohydrate in them.</p>

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Combustion of Composites from Fragmented Porous Silicon and Sodium Perchlorate Monohydrate in Inert Gases, Nitrogen, and Air

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • V. N. Mironov,
  • E. S. Demukh,
  • O. G. Penyazkov,
  • K. L. Sevruk,
  • I. I. Chernukho

摘要

In creating energy-rich composites based on nanostructured silicon, it is topical to ensure stable characteristics of their combustion. In this connection, establishing conditions and mechanisms for the appearance of precursors, i.e., sources of ignition ahead of the front of a combustion wave and their influence on the course of the process, is of importance. In the work, the authors have presented the results of investigation into the combustion of the composites with combinations of their parameters using high-speed photography and the shadow method of visualization of disturbances in gas media at different pressures in the substrates with a wall thickness of 50 μm to 3 mm from materials with excellent acoustic impedance. Possible causes of formation of the precursors have been indicated, in particular, the instability of the burning velocity of the composites and the low humidity of the sodium-perchlorate monohydrate in them.