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Volume 39 Issue 9
Sep 2025
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Chinese Journal of High Pressure Physics  > 2025  >  39(9): 091301.
CAI Yue, LIU Xueli, HE Chuan, LIU Jinxu. Effect of Metal Oxides on the Combustion Characteristics of Al-Based Thermite[J]. Chinese Journal of High Pressure Physics, 2025, 39(9): 091301. doi: 10.11858/gywlxb.20240956
Citation: CAI Yue, LIU Xueli, HE Chuan, LIU Jinxu. Effect of Metal Oxides on the Combustion Characteristics of Al-Based Thermite[J]. Chinese Journal of High Pressure Physics, 2025, 39(9): 091301. doi: 10.11858/gywlxb.20240956
shu

Effect of Metal Oxides on the Combustion Characteristics of Al-Based Thermite

doi: 10.11858/gywlxb.20240956
  • 1.

    School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China

  • 2.

    National Key Laboratory of Science and Technology on Materials under Shock and Impact,Beijing Institute of Technology, Beijing 100081, China

  • Received Date: 07 Dec 2024
  • Rev Recd Date: 28 Mar 2025
    • Available Online: 01 Apr 2025
  • Issue Publish Date: 05 Sep 2025
    Abstract
  • To explore the influence of various metal oxides on the combustion behavior of Al-based thermites, five metal oxides (Bi2O3, Fe2O3, MnO2, CuO, and MoO3), were selected and synthesized via a liquid-phase mixing method. The combustion characteristics, including reaction energy, self-propagating combustion properties, reaction pressure, and ignition delay time, were systematically investigated. The results demonstrated that the choice of metal oxide significantly impacted the combustion performance of Al-based thermites. Among them, Al-MoO3 exhibited the highest reaction energy in an Ar atmosphere ((4.10±0.05) kJ/g), the fastest flame spead rate ((18.77±1.23) m/s), the highest flame temperature, and the shortest ignition delay time ((1.15±0.06) s). Meanwhile, Al-Bi2O3 generated the highest peak pressure and pressure rise rate, with its peak pressure being 1.9, 3.5, 14.6, and 24.3 times greater than those of Al-CuO, Al-MnO2, Al-Fe2O3, and Al-MoO3, respectively. These findings highlight the potential to regulate thermite combustion properties through strategic metal oxide selection, providing a theoretical foundation for military and industrial applications.

     

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