Comparative investigations of ternary thermite Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 from pyrolytic, kinetics and combustion behaviors

Li, Shi; Chen, Jialin; Guo, Tao; Wen, Deliang; Jiang, Lin; Yao, Miao; Song, Jiaxing; Xie, Lei; Mao, Y.

doi:10.1016/j.dt.2022.05.012

Cited by 5 publications

(4 citation statements)

References 32 publications

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“…In the post-combustion products of AMC thermite, the diffraction peaks corresponding to manganese aluminum oxide (MnAl 2 O 4 ) phase, copper aluminum oxide (CuAl 2 O 4 ) and copper manganese (Cu x Mn y ) phase are found. This can be ascribed to the sintering of the products during the reaction [11,27].…”

Section: Analysis Of Post-combustion Productsmentioning

confidence: 99%

“…As for the oxidizer additives, common oxides, such as, CuO [11], Bi 2 O 3 [11], and SiO 2 [12], have been widely employed. The gas production performance of the system can be improved by adding CuO [11], while the addition of TiO 2 and SnO 2 , lead to a smooth adjustment of the energy release performance [13,14]. Thus, the employment of additional components into the binary system is an alternative feasible route to modulate the performance of the thermites.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the addition of titanium powders into the Al/iodine pentoxide (I 2 O 5 ) greatly enhanced the reactivity of the thermites [10]. As for the oxidizer additives, common oxides, such as, CuO [11], Bi 2 O 3 [11], and SiO 2 [12], have been widely employed. The gas production performance of the system can be improved by adding CuO [11], while the addition of TiO 2 and SnO 2 , lead to a smooth adjustment of the energy release performance [13,14].…”

Section: Introductionmentioning

confidence: 99%

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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

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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.

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Section: Analysis Of Post-combustion Productsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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

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“…Similarly, the ignition temperature of the 3.5–20 μm particle size system was 627 °C and the ignition delay time was 1–5 s. Wolenski [26] used the photothermal method to transform the composition of Al/MoO 3 particles, thus improving the combustion performance. Li [27] found that Al/Fe 2 O 3 /Bi 2 O 3 has better ignition and gas production performance. Its average ignition energy was 4.2 J lower than Al/Fe 2 O 3 /CuO.…”

Section: Introductionmentioning

confidence: 99%

Thermal Analysis and Pyrolytic Behavior of Bimetal and Double Oxidant Thermite Al/Mg/MoO₃/CuO

Jiang

Liu

et al. 2023

Propellants Explo Pyrotec

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In order to study the effect of fuel Mg and metal oxide CuO on the reaction of thermite, different proportions of Al-Mg alloys and MoO 3 -CuO metal oxides were prepared by mechanical ball milling, and then the samples of Al 1-x Mg x /(MoO 3 ) 1-x CuO x composite thermite were prepared by ultrasonic dispersion method. The samples were characterized by SEM, TG-DSC, and constant pressure combustion experiments. The results show that in quaternary thermite, adding CuO increases initial exothermic temperature, but increases exothermic heat in high-temperature regions, and effectively reduces the activation energy of the thermite reaction. On the contrary, adding Mg reduces exothermic heat in the high-temperature areas, but reduces initial exothermic temperature. After calculation, the quaternary thermite with the best exothermic performance is Al 0.8 Mg 0.2 /(MoO 3 ) 0.5 CuO 0.5 . Its initial reaction temperature is only 614 °C, but the heat release is up to 2217 J/g. Its activation energy is only 106.7 kJ/mol, but the critical temperature of thermal explosion is up to 927.9 K. At the same time, Al 0.8 Mg 0.2 /(MoO 3 ) 0.5 CuO 0.5 has better combustion performance. During combustion, the flame is jet-like, and the main products are Al 2 O 3 , Mo and Cu. This work provides a reference for studying the thermal safety and combustion performance of quaternary thermite.

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Study of the hardfacing process using self-shielding flux-cored wire with an exothermic addition with a combined oxidizer of the Al-(CuO/Fe2O3) system

Trembach,

Silchenko,

Balenko

et al. 2024

Int J Adv Manuf Technol

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Comparative investigations of ternary thermite Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 from pyrolytic, kinetics and combustion behaviors

Cited by 5 publications

References 32 publications

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

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

Thermal Analysis and Pyrolytic Behavior of Bimetal and Double Oxidant Thermite Al/Mg/MoO₃/CuO

Study of the hardfacing process using self-shielding flux-cored wire with an exothermic addition with a combined oxidizer of the Al-(CuO/Fe2O3) system

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Comparative investigations of ternary thermite Al/Fe2O3/CuO and Al/Fe2O3/Bi2O3 from pyrolytic, kinetics and combustion behaviors

Cited by 5 publications

References 32 publications

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

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

Thermal Analysis and Pyrolytic Behavior of Bimetal and Double Oxidant Thermite Al/Mg/MoO3/CuO

Study of the hardfacing process using self-shielding flux-cored wire with an exothermic addition with a combined oxidizer of the Al-(CuO/Fe2O3) system

Contact Info

Product

Resources

About

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

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

Thermal Analysis and Pyrolytic Behavior of Bimetal and Double Oxidant Thermite Al/Mg/MoO₃/CuO