Combustion behavior of discrete magnesium diboride particles in the state of motion

Zhong, Weidong; Liang, Daolun; Zhong, Hong; Li, Mengli; Chen, Kerun; Niu, Zhiyuan; Wang, Yan

doi:10.1016/j.actaastro.2023.01.036

Cited by 3 publications

(1 citation statement)

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“…Boron (B)-based fuels are promising for applications such as solid propulsion, space exploration, and hypersonic travel due to their high energy densities. − The gravimetric energy density of pristine B (58.9 kJ/g) is higher than those of typical liquid and gas fuels (e.g., kerosene of 43.0 kJ/g, methane of 55.6 kJ/g), but the application of pristine B is still limited due to its delayed ignition, slow oxidation, and incomplete combustion. ,, One of the strategies used to address the aforementioned challenges is introducing magnesium (Mg) to promote B combustion, either by physically mixing B particles with Mg particles − or by atomically adding Mg to B, i.e., using B-based compounds such as magnesium diboride (MgB 2 ). − …”

Section: Materials Morphology and Compositionmentioning

confidence: 99%

Exfoliated Magnesium Diboride (MgB₂) Nanosheets as Solid Fuels

Jiang,

Ka,

Huynh

et al. 2023

Nano Lett.

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Magnesium diboride (MgB 2 ) has been explored as an alternative fuel to boron (B) due to its high energy density and the additive effect of magnesium (Mg) to promote B combustion. However, the primary oxidation of MgB 2 does not occur unless it decomposes at a high temperature (830 °C), which makes ignition difficult and the reaction slow. Recently, two-dimensional (2D) exfoliated MgB 2 nanosheets have attracted increasing attention due to their unique properties and potential applications in various fields. In this study, we investigate the potential of 2D exfoliated MgB 2 nanosheets as solid fuels for overcoming the challenges of MgB 2 combustion. We analyzed their oxidation behavior and energetic performance through material characterization and combustion tests under slow-and fast-heating conditions and compared their performance with those of bulk MgB 2 , B nanoparticles, and a B/Mg nanoparticle mixture. This study highlights the potential of MgB 2 nanosheets as promising solid fuels with superior energetic properties.

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