Abstract
We have studied the magnesium reduction of the Mg4Ta2O9 tantalate in the combustion regime and assessed the influence of starting mixture parameters on the combustion speed and temperature, the degree of reduction, and characteristics of the resultant tantalum powders. The use of Mg4Ta2O9 as a precursor for the reduction process has made it possible to increase the degree of reduction and the specific surface area of tantalum powders. We have obtained powders with a specific surface area of up to 21 m2/g, which is a factor of 4–5 larger than in the case of the reduction of Ta2O5 under the same conditions.
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Original Russian Text © V.M. Orlov, M.V. Kryzhanov, 2018, published in Neorganicheskie Materialy, 2018, Vol. 54, No. 9, pp. 961–965.
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Orlov, V.M., Kryzhanov, M.V. Magnesiothermic Reduction of Mg4Ta2O9 in the Combustion Regime. Inorg Mater 54, 910–914 (2018). https://doi.org/10.1134/S0020168518090108
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DOI: https://doi.org/10.1134/S0020168518090108