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Explosion hazard and prevention of Al–Ni mechanical alloy powders
Journal of Loss Prevention in the Process Industries ( IF 3.6 ) Pub Date : 2021-12-14 , DOI: 10.1016/j.jlp.2021.104714
Haipeng Jiang 1 , Mingshu Bi 1 , Jiankan Zhang 2 , Fengqi Zhao 2 , Jiaying Wang 1 , Fang Sun 1 , Qiuping Xiao 3 , Wei Gao 1
Affiliation  

Al–Ni mechanical alloys containing nickel are synthesized to explore the explosion hazard of fuel additives in energetic formulations in this study. Explosion severity and ignition sensitivity of Al and Al–Ni powders are measured. The results show that as the nickel content increases, the synthesizing heat of Ni-aluminide will firstly increase, and then decrease, which may also make the explosion severity of aluminum powder increase firstly and then decrease accordingly. The powder's sensitivity to electrostatic ignition will grow as the nickel content increases. As the nickel content increases from 0 to 17%, the average activation energy of Al–Ni powder decreases by 77.5%. The increase of ignition energy mainly affects the flame propagation, but with few effects on the process of Al–Ni combustion. Therefore, as the ignition energy increases, the explosion severity of the Al and Al–Ni powders decreases slightly. For safety's sake, the production and storage devices must be inert, and the concentration of oxygen should be less than 5%.



中文翻译:

Al-Ni机械合金粉末的爆炸危险及预防

在本研究中,合成了含镍的 Al-Ni 机械合金,以探索高能配方中燃料添加剂的爆炸危险。测量了 Al 和 Al-Ni 粉末的爆炸严重性和点燃敏感性。结果表明,随着镍含量的增加,镍铝化物的合成热会先增大后减小,也可能使铝粉的爆炸严重程度先增大后减小。随着镍含量的增加,粉末对静电点火的敏感性会增加。随着镍含量从 0 增加到 17%,Al-Ni 粉末的平均活化能下降了 77.5%。点火能量的增加主要影响火焰的传播,对Al-Ni燃烧过程影响不大。因此,随着点火能量的增加,Al 和 Al-Ni 粉末的爆炸严重程度略有下降。为了安全起见,生产和储存设备必须是惰性的,氧气浓度应小于5%。

更新日期:2021-12-16
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