Effect of Magnesium-Coated Boron Particles on Burning Characteristics of Solid Fuels in High-Speed Crossflows

Pace, K.; Jarymowycz, T. A.; Yang, Vigor

doi:10.1615/intjenergeticmaterialschemprop.v2.i1-6.180

Cited by 9 publications

(6 citation statements)

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“…A similar modification method was implemented in a study [12] of the effect of a 10% additive of amorphous boron particles encapsulated in magnesium (a fraction of magnesium of 0.02) on the combustion of a doublebase solid propellant. The boron particle size was 0.8-1 µm.…”

Section: Methods Of Modifying Particles Of Powder Metallic Fuelmentioning

confidence: 99%

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Ignition, combustion, and agglomeration of encapsulated aluminum particles in a composite solid propellant. I. Theoretical study of the ignition and combustion of aluminum with fluorine-containing coatings

Yagodnikov

Andreev

Воробьев

et al. 2006

Combust Explos Shock Waves

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This paper gives a brief review of methods for modifying metallic fuels for composite solid propellants, including the application of coatings onto aluminum particles (encapsulation). Requirements for the coating material are formulated. By means of thermodynamic calculations, it is shown that some fluorine-containing coatings reduce the content of the condensed phase in the propellant combustion products without decreasing the specific impulse. A mathematical model for the ignition of a single encapsulated particle is proposed. Calculations show a decrease in the ignition time of an aluminum particle with a fluorine-containing coating.

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Section: Methods Of Modifying Particles Of Powder Metallic Fuelmentioning

confidence: 99%

“…In [12], the obtained result is explained as follows. During application (at an elevated temperature) of the coating, B 2 O 3 is partially removed from the boron surface as a result of the exothermic reaction B 2 O 3 + 3Mg → 2B + 3MgO.…”

Section: Methods Of Modifying Particles Of Powder Metallic Fuelmentioning

confidence: 99%

Ignition, combustion, and agglomeration of encapsulated aluminum particles in a composite solid propellant. I. Theoretical study of the ignition and combustion of aluminum with fluorine-containing coatings

Yagodnikov

Andreev

Воробьев

et al. 2006

Combust Explos Shock Waves

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“…Coating magnesium on the surface of boron powder can effectively reduce the ignition point and promote the ignition and combustion of boron. In B@Mg, Mg can react with B 2 O 3 to form B at a high temperature, which reduces the ignition time of boron particles and improves the combustion efficiency [ 108 ].…”

Section: Surface Modification Of Boron Powdermentioning

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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“…Synthesis of amorphous powders, structure change, production of metal-ceramics, or inclusions of reactants (metal oxides or fluorides) can be achieved [18][19][20][21]. Coating of particles through deposition of metals can improve ignition and combustion properties, such as for magnesium-coated boron [22][23][24]. The weakening of the oxide shell can be pursued through chemical treatment.…”

Section: Introductionmentioning

confidence: 99%

Activated aluminum powders for space propulsion

et al. 2015

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Effect of Magnesium-Coated Boron Particles on Burning Characteristics of Solid Fuels in High-Speed Crossflows

Cited by 9 publications

References 0 publications

Ignition, combustion, and agglomeration of encapsulated aluminum particles in a composite solid propellant. I. Theoretical study of the ignition and combustion of aluminum with fluorine-containing coatings

Ignition, combustion, and agglomeration of encapsulated aluminum particles in a composite solid propellant. I. Theoretical study of the ignition and combustion of aluminum with fluorine-containing coatings

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

Activated aluminum powders for space propulsion

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