Tuning the reactivity and energy release efficiency in aluminum alloy thermite by eutectic silicon

Shen, Li-xiao; Li, Yan; Zhang, Lin; Zhu, Shunguan; Yi, Zhenxin; C, Zhu

doi:10.1016/j.cej.2023.143113

Cited by 9 publications

(2 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reaction performance of thermites depends not only on the size, shape and nature of the oxidizer/metal, but on the assembly structure [12][13][14][15][16]. Wang et al [16] used iron fluoride as an oxidizer to prepare thermite, and the resulting product showed higher reactivity but lower reaction heat release than thermite with iron oxide.…”

Section: Introductionmentioning

confidence: 99%

Electrospray Nested Energetic Cells from Nanothermite with MoO3 Nanostrips: Reactivity, Sensitivity and Combustion Performance

Li,

Ren,

Xie

2024

Applied Sciences

View full text Add to dashboard Cite

Nanothermites have attracted great attention over the last two decades for their superior performance in heat release and pressure wave generation. The shape of the oxidizer and the assembly structure could significantly influence the performance. This paper reports on the reactivity, sensitivity and combustion performance of nanothermite of aluminum nanoparticles and MoO3 nanostrips prepared via electrospray strategy. The resulting particles were in good integrity, resembling bird nests. There were two exothermic processes for the resulting composites, which successively conformed to the Avrami–Erofeev equation of n = 4 and the Zhuravlev–Lesokhin–Tempelman (Z-L-T) equation. And the corresponding activation energies for the two processes were 148.645 kJ/mol and 297.280 kJ/mol, respectively. The flame sensitivity and impact sensitivity for the electrosprayed product were 50 cm and 35 cm, respectively, which were both higher than those of the mechanically mixed counterpart. The constant-volume combustion test showed that the maximum pressure of the electrosprayed product was 1.96 MPa, which was 0.69 MPa higher than that of the mechanically mixed counterpart. The combustion performances were evaluated under confined and unconfined conditions. Due to the fast heat release and transfer efficiency, fierce deflagration was achieved in the case of the electrosprayed sample under confined conditions. The combustion rate of the electrosprayed sample under unconfined conditions was almost a hundred times as much as that of the mechanically mixed one.

show abstract

Section: Introductionmentioning

confidence: 99%

Electrospray Nested Energetic Cells from Nanothermite with MoO3 Nanostrips: Reactivity, Sensitivity and Combustion Performance

Li,

Ren,

Xie

2024

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Aluminum (Al)-based thermites have drawn intensive attention due to their high exothermicity and tunability [1]. Different methods have been explored to modulate the reactivity and energy release performance of Albased thermites [2,3].…”

Section: Introductionmentioning

confidence: 99%

Ignition and energy release performance of dual‐oxidant Al/MnO₂/CuO ternary thermites under rapid heating conditions

Liu,

He,

Zhuang

et al. 2024

Propellants Explo Pyrotec

View full text Add to dashboard Cite

Tailoring the energy release performance of the thermites is crucial for their application in various fields. In this article, dual‐oxidant Al/MnO2/CuO ternary thermites with varying compositions were prepared and systematically evaluated. The ignition delay time, heat of reaction, self‐sustained burning rate, and pressure performance of the thermites were evaluated. As the Al/CuO content increased, the ignition delay time and heat of reaction decreased, while the reaction efficiency, burning rate, pressure peak, and pressurization rate increased. Furthermore, the synergistic addition of the MnO2 and CuO led to enhanced relative flame intensity and maximum flame temperature in the ternary thermite. Our work demonstrates an effective strategy for regulating the energy performance of the thermites by co‐adding of metal oxides. This approach opens avenues for tailoring thermite properties to meet the diverse requirements of various applications.

show abstract

Enhancing the energy release performance of nanothermites through metal oxides free oxygen and pores

Shi,

Wang,

et al. 2024

Chemical Engineering Journal

View full text Add to dashboard Cite

Tuning the reactivity and energy release efficiency in aluminum alloy thermite by eutectic silicon

Cited by 9 publications

References 35 publications

Electrospray Nested Energetic Cells from Nanothermite with MoO3 Nanostrips: Reactivity, Sensitivity and Combustion Performance

Electrospray Nested Energetic Cells from Nanothermite with MoO3 Nanostrips: Reactivity, Sensitivity and Combustion Performance

Ignition and energy release performance of dual‐oxidant Al/MnO₂/CuO ternary thermites under rapid heating conditions

Enhancing the energy release performance of nanothermites through metal oxides free oxygen and pores

Contact Info

Product

Resources

About

Tuning the reactivity and energy release efficiency in aluminum alloy thermite by eutectic silicon

Cited by 9 publications

References 35 publications

Electrospray Nested Energetic Cells from Nanothermite with MoO3 Nanostrips: Reactivity, Sensitivity and Combustion Performance

Electrospray Nested Energetic Cells from Nanothermite with MoO3 Nanostrips: Reactivity, Sensitivity and Combustion Performance

Ignition and energy release performance of dual‐oxidant Al/MnO2/CuO ternary thermites under rapid heating conditions

Enhancing the energy release performance of nanothermites through metal oxides free oxygen and pores

Contact Info

Product

Resources

About

Ignition and energy release performance of dual‐oxidant Al/MnO₂/CuO ternary thermites under rapid heating conditions