| Autor: |
Ostrovskaya, N. F., Bartnitskaya, T. S., Lyashenko, V. I., Zelyavskii, V. B., Kurdyumov, A. V. |
| Zdroj: |
Powder Metallurgy and Metal Ceramics; November 1996, Vol. 35 p636-639, 4p |
| Abstrakt: |
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. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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