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Intuitionistic study on the critical decomposition energy of ammonium perchlorate by SEM

机译：em的直观研究高氯酸铵临界分解能量

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摘要

The decomposition course of AmmoniumPerchlorate (AP) particles under electron energy is observed using a G2 pro Desktop Scanning Electron Microscope. The state that the AP particle is starting to decompose exhibiting cracks on its surface is observed and recorded using the S-4800II Fielding Emission Scanning Electron Microscope (FESEM), the Image Pro Plus (IPP) System is employed to obtain the projected area of that decomposed AP particle in the FESEM image, and the critical decomposition energy of the AP particle is calculated. Results have shown that the critical decomposition energy is decreased with the reduction of AP particle size. Especially when the AP particle size is approximately under 20 mm, the critical decomposition energy is sharply decreased, and the critical decomposition energy is very small if under 3 mm. This result is very helpful to explain why the burning rate of propellants and the brisance of Fuel Air Explosives (FAE) are enhanced and the sensitivities of those AP-based energetic materials are increased with the reduction of AP particle size. Furthermore, this method can be used to calculate in an intuitionistic way the critical decomposition energies of other crystalline materials.
机译：使用G2 Pro桌面扫描电子显微镜观察电子能量下的氨基氯酸氢盐（AP）颗粒的分解过程。使用S-4800II曝光发射扫描电子显微镜（FESEM）观察和记录AP粒子开始分解在其表面上表现出裂缝的状态，采用图像Pro加（IPP）系统来获得预计区域计算FeSEM图像中的分解AP粒子，并计算AP粒子的临界分解能量。结果表明，随着AP粒径的降低而降低了临界分解能量。特别是当AP粒径约为20mm时，临界分解能量急剧下降，如果在3毫米以下，则临界分解能量非常小。这一结果非常有助于解释为什么增强推进剂的燃烧率和燃料空气爆炸物（FAE）的燃烧率和燃料空气炸药的燃烧，并且随着AP粒径的降低而增加了那些基于AP的能量材料的敏感性。此外，该方法可用于以直觉方式计算其他结晶材料的临界分解能量。

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  • 来源
    《RSC Advances》 |2017年第79期|共6页
  • 作者

    Liu Jie; Ke Xiang; Hao Ga-zi; Xiao Lei; Jiang Wei; Li Feng-Sheng;

  • 作者单位

    Nanjing Univ Sci &

    Technol Natl Special Superfine Powder Engn Res Ctr China Sch Chem Engn Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Natl Special Superfine Powder Engn Res Ctr China Sch Chem Engn Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Natl Special Superfine Powder Engn Res Ctr China Sch Chem Engn Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Natl Special Superfine Powder Engn Res Ctr China Sch Chem Engn Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Natl Special Superfine Powder Engn Res Ctr China Sch Chem Engn Nanjing 210094 Jiangsu Peoples R China;

    Nanjing Univ Sci &

    Technol Natl Special Superfine Powder Engn Res Ctr China Sch Chem Engn Nanjing 210094 Jiangsu Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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