Ignition and Global Combustion Models for Clouds of Boron Particles

Meese, R.; Skifstad, J. G.

doi:10.2514/3.49155

Cited by 18 publications

(1 citation statement)

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“…The critical ignition temperature of boron particles calculated by the ignition stage model proposed by Meinkohn [ 41 ] and based on the King model is 1900 K, which is in good agreement with the experimental results of Macek [ 32 ]. Based on King’s model, Gaponenko and Meese also proposed their own models and achieved good prediction accuracy [ 42 , 43 ].…”

Section: Ignition and Combustion Mechanism Of Boron Particlesmentioning

confidence: 99%

High Calorific Values Boron Powder: Ignition and Combustion Mechanism, Surface Modification Strategies and Properties

Liu¹,

Wang²,

Liu³

et al. 2023

Molecules

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Boron powder is a kind of metal fuel with high gravimetric and volumetric calorific values, which has been widely used in military fields such as solid propellants, high-energy explosives, and pyrotechnics. However, the easily formed liquid oxide layer can adhere to the surface of boron powder and react with the hydroxyl (-OH) group of hydroxyl-terminated polybutadiene (HTPB) binder to form a gel layer that is detrimental to propellant processing and restricts the complete oxidation of boron powder. Therefore, to improve the combustion efficiency of boron powder, the ignition and combustion mechanisms of boron powder have been studied, and surface coating modification strategies have been developed by researchers worldwide, aiming to optimize the surface properties, improve the reaction activity, and promote the energy release of boron powder. In this review, recent studies on the ignition and combustion mechanisms of boron powder are discussed. Moreover, the reported boron powder coating materials are classified according to the chemical structure and reaction mechanism. Additionally, the mechanisms and characteristics of different coating materials are summarized, and the mechanism diagrams of fluoride and metal oxide are provided. Furthermore, promising directions for modification methods and the potential application prospects of boron powder are also proposed.

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