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Research on Impact-Induced Reaction Characteristics of Al2Ce/AP Reactive Material.

Shoujia Li1, Beichen Zhang1, Lin Peng1

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|April 27, 2026
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Summary

This study introduces advanced aluminum-cerium alloys into ammonium perchlorate (AP) to enhance reactive material performance. The new Al-Ce/AP composites show improved mechanical properties and significantly higher impact ignition sensitivity.

Keywords:
aluminum–cerium alloyammonium perchlorateimpact ignitionmechanical propertiesthermal decomposition

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Energetic Materials

Background:

  • Conventional polytetrafluoroethylene/aluminum (PTFE/Al) reactive materials suffer from low strength and insufficient aluminum reaction efficiency.
  • There is a need for improved reactive materials with enhanced mechanical properties and ignition sensitivity.

Purpose of the Study:

  • To develop novel reactive materials by incorporating highly reactive aluminum-cerium (Al-Ce) alloys with multiscale structures into an ammonium perchlorate (AP) matrix.
  • To investigate the effects of Al-Ce alloys on the thermal decomposition, dynamic mechanical properties, and impact ignition behavior of AP-based reactive materials.

Main Methods:

  • Preparation of Al/AP and Al-Ce/AP reactive materials with varying cerium (Ce) contents (30%, 50%, 70%).
  • Systematic investigation using differential scanning calorimetry (DSC) for thermal decomposition analysis.
  • Split Hopkinson pressure bar (SHPB) experiments to evaluate dynamic mechanical properties and impact ignition behavior.

Main Results:

  • Addition of Al2Ce significantly lowered AP decomposition temperature by ~69 °C, promoting concentrated exothermic decomposition.
  • Al2Ce/AP composites demonstrated superior dynamic yield strength and flow stress compared to Al/AP.
  • Enhanced mechanical failure and catalytic effects of Al2Ce synergistically improved impact ignition sensitivity, lowering the ignition threshold and shortening combustion duration.

Conclusions:

  • Al2Ce/AP is a novel reactive material with excellent dynamic mechanical properties and outstanding impact reactivity.
  • Highly reactive rare-earth aluminum alloys offer promising applications in aluminum-based reactive materials.
  • The study provides theoretical and technical support for the development of advanced energetic materials.