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Generation of Thermal Electromotive Force during Combustion of Mixtures of Ti + xB

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Combustion, Explosion, and Shock Waves Aims and scope

Abstract

The generation of thermal electromotive force (EMF) during combustion of titanium and boron powder mixtures under pressure has been studied. It has been shown that when the boron content in the mixture is less than 2.5 mole, thermal EMF is generated in the form of a constant positive signal, at 22.5 \(<\) B \(<\) 4.0 mole, it is generated in the form of a constant negative signal, and at B \(>\) 4.0 mole, in the form of a negative pulse. The generation of the positive signal is due to the electronic conductivity of titanium particles, and the generation of the negative signal is due to the hole conductivity of boron particles. Experimental dependences of the maximum temperature, average burning velocity, the width of the combustion wave, and thermal EMF on the mole fraction of boron in the mixture have been obtained. It has been shown that the greatest width of the combustion wave is about 10 mm, and its minimum (critical) width is 1 mm.

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Authors and Affiliations

  1. Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences (ISMAN), 142432, Chernogolovka, Russia

    V. A. Shcherbakov & V. Yu. Barinov

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  1. V. A. Shcherbakov
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  2. V. Yu. Barinov
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Correspondence to V. A. Shcherbakov.

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Translated from Fizika Goreniya i Vzryva, 2022, Vol. 58, No. 1, pp. 62-69.https://doi.org/10.15372/FGV20220106.

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Shcherbakov, V.A., Barinov, V.Y. Generation of Thermal Electromotive Force during Combustion of Mixtures of Ti + xB. Combust Explos Shock Waves 58, 54–61 (2022). https://doi.org/10.1134/S0010508222010063

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  • DOI: https://doi.org/10.1134/S0010508222010063

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