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Issue 123, 2015
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Chemical analysis of primary combustion products of boron-based fuel-rich propellants

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Abstract

A facility was designed to collect the primary combustion products of boron-based fuel-rich propellants under different chamber pressures. The morphology and particle size of condensed-phase products were analyzed using a laser particle size analyzer and a scanning electron microscope (SEM), and chemical analysis of condensed-phase products was carried out by X-ray diffraction (XRD), laser Raman spectrometry, wet chemical analysis and elemental analysis. In addition, organics in condensed-phase products and gaseous products were analyzed by Fourier Transform Infrared Spectrometry (FTIR) and Gas Chromatography (GC), respectively. The results show that the condensed-phase products mainly consist of B, C, B4C (or B12C2), BN, Mg, MgO, MgAl2O4, Al, Al2O3, AlCl3, NH4[Mg(H2O)6]Cl3, NH4Cl and Fe3O4; there are large amounts of boron oxide and boron carbide in the condensed-phase products, which indicates that elemental boron is highly active during the primary combustion process; a higher chamber pressure may be disadvantageous to the secondary combustion efficiency because more inactive boron carbide, graphite and h-BN (especially boron carbide) are produced.

Graphical abstract: Chemical analysis of primary combustion products of boron-based fuel-rich propellants

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Publication details

The article was received on 13 Jul 2015, accepted on 06 Nov 2015 and first published on 10 Nov 2015


Article type: Paper
DOI: 10.1039/C5RA13693H
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RSC Adv., 2015,5, 101416-101426

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    Chemical analysis of primary combustion products of boron-based fuel-rich propellants

    L. Liu, G. He, Y. Wang and S. Hu, RSC Adv., 2015, 5, 101416
    DOI: 10.1039/C5RA13693H

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