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Crystallization of boron nitride from solution in a lithium borate melt

  • Methods of Study and Properties of Powder Materials
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Powder Metallurgy and Metal Ceramics Aims and scope

Abstract

We have investigated the reaction between disordered (turbostratic) boron nitride and lithium carbonate under a nitrogen atmosphere using x rays and electron microscopy. Lithium borate and cyanamide were found to be the reaction products at a temperature of 650°C. Spontaneous crystallization of highly, ordered graphitic boron nitride occurs from solution in a melt of lithium borates at 1000°C. Three-dimensional ordering and crystal size increase with elevation of the temperature to 1450°C.

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Authors
  1. N. F. Ostrovskaya
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  2. T. S. Bartnitskaya
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  3. V. I. Lyashenko
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  4. V. B. Zelyavskii
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  5. A. V. Kurdyumov
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Additional information

Institute of Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 11/12(392), pp. 68–72, November–December, 1996. Original article submitted November 17, 1994.

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Ostrovskaya, N.F., Bartnitskaya, T.S., Lyashenko, V.I. et al. Crystallization of boron nitride from solution in a lithium borate melt. Powder Metall Met Ceram 35, 636–639 (1996). https://doi.org/10.1007/BF01513049

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