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Preparation of hafnium diboride nanopowders in an anhydrous Na2B4O7 ionic melt

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Abstract

Reactions between hafnium powder and microcrystalline boron in a Na2B4O7 ionic melt have been studied at temperatures from 600 to 850°C. The results demonstrate that nanoparticulate hafnium diboride forms starting at 750°C. According to electron microscopy data, the HfB2 powder obtained at 850°C consists of nearly spherical particles 50–55 nm in diameter, which agrees with the equivalent particle diameter (≃ 60 nm) evaluated from the specific surface area of the HfB2 and with the crystallite size (≃55 nm) determined from X-ray diffraction data.

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka, Moscow oblast, 142432, Russia

    S. E. Kravchenko, A. G. Burlakova, I. I. Korobov, Yu. M. Shul’ga, N. N. Dremova, L. S. Volkova, G. V. Kalinnikov, S. P. Shilkin & R. A. Andrievskii

Authors
  1. S. E. Kravchenko
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  2. A. G. Burlakova
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  3. I. I. Korobov
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  4. Yu. M. Shul’ga
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  5. N. N. Dremova
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  6. L. S. Volkova
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  7. G. V. Kalinnikov
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  8. S. P. Shilkin
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  9. R. A. Andrievskii
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Corresponding author

Correspondence to G. V. Kalinnikov.

Additional information

Original Russian Text © S.E. Kravchenko, A.G. Burlakova, I.I. Korobov, Yu.M. Shul’ga, N.N. Dremova, L.S. Volkova, G.V. Kalinnikov, S.P. Shilkin, R.A. Andrievskii, 2015, published in Neorganicheskie Materialy, 2015, Vol. 51, No. 4, pp. 433–436.

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Kravchenko, S.E., Burlakova, A.G., Korobov, I.I. et al. Preparation of hafnium diboride nanopowders in an anhydrous Na2B4O7 ionic melt. Inorg Mater 51, 380–383 (2015). https://doi.org/10.1134/S0020168515030085

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  • DOI: https://doi.org/10.1134/S0020168515030085

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