Ignition, Combustion, and Gas Emission during Combustion of Fe3O4–Al–Ni Nanothermite Mixtures

IF 0.6 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-06-23 DOI:10.3103/S1061386225700049

S. G. Vadchenko, S. Yu. Pereverzeva

引用次数: 0

Abstract

Gas emission taking place during combustion of Fe₃O₄–Al–Ni nanothermite mixtures with additives of multilayer carbon nanotubes was studied. Variation in released gas volume with pre-degassing temperature was analyzed. It was shown that the major portion of easily evaporated impurities and moisture is removed upon vacuum degassing of mixtures at 162°C. A two-stage ignition mode of mixtures was found, and their critical ignition temperatures were determined. The burning velocity varied from 10 mm/s for Ni + Al to 770 mm/s for Fe₃O₄ + Al.

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Fe3O4-Al-Ni纳米热剂混合物燃烧过程中的点火、燃烧和气体排放

研究了添加多层碳纳米管的Fe3O4-Al-Ni纳米热剂混合物在燃烧过程中的气体排放。分析了预脱气温度对气体释放量的影响。结果表明，在162℃真空脱气时，易蒸发的杂质和水分大部分被除去。发现了混合物的两级点火模式，并确定了其临界点火温度。Ni + Al的燃烧速度为10 mm/s， Fe3O4 + Al的燃烧速度为770 mm/s。

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来源期刊

International Journal of Self-Propagating High-Temperature Synthesis MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

33.30%

发文量

期刊介绍： International Journal of Self-Propagating High-Temperature Synthesis is an international journal covering a wide range of topics concerned with self-propagating high-temperature synthesis (SHS), the process for the production of advanced materials based on solid-state combustion utilizing internally generated chemical energy. Subjects range from the fundamentals of SHS processes, chemistry and technology of SHS products and advanced materials to problems concerned with related fields, such as the kinetics and thermodynamics of high-temperature chemical reactions, combustion theory, macroscopic kinetics of nonisothermic processes, etc. The journal is intended to provide a wide-ranging exchange of research results and a better understanding of developmental and innovative trends in SHS science and applications.