Regularities of structure and phase formation at the synthesis of AlN‒Al2O 3‒Y 2O 3compositions in the combustion mode
https://doi.org/10.17073/1683-4518-2020-9-32-36
Abstract
The results of studies on the synthesis of AlN‒Al2O3‒Y2O3 compositions in the combustion mode in an industrial reactor are presented. The influence of synthesis temperature on the formation of microstructure, phase composition of compositions and oxygen content of impurities dissolved in the crystal lattice of aluminum nitride was studied. The optimal synthesis temperature is determined. Experimental batches of composite powders were produced for the production of dielectric ceramics with high thermal conductivity.
About the Authors
V. V. ZakorzhevskyRussian Federation
I. D. Kovalev
Russian Federation
N. I. Mukhina
Russian Federation
References
1. Sheppard, L. M. Aluminum nitride: a versatile but challenging material / L. M. Sheppard // Ceram. Bull. ― 1990. ― Vol. 69, № 11. ― P. 1801‒1812.
2. Knudsen, K. Aluminum nitride / K. Knudsen // Am. Ceram. Soc. Bull. ― 1995. ― Vol. 74, № 6. ― P. 97‒101.
3. Bellosi, A. The influence of microstructure on the thermal conductivity of aluminum nitride / A. Bellosi, L. Esposito, E. Scafe, L. Fabri // J. Mater. Sci. ― 1994. ― Vol. 29. ― P. 5014‒5022.
4. Slack, G. A. The intrinsic thermal conductivity of AlN / G. A. Slack, R. A. Tanzilli, R. O. Pohl, J. W. Vandersande // J. Phys. Chem. Solids. ― 1987. ― Vol. 48, № 7. ― P. 641‒647.
5. Baranda, P. S. Effect of silica on the thermal conductivity of aluminum nitride / P. S. Baranda, A. K. Knudsen, E. Rah // J. Am. Ceram. Soc. ― 1993. ― Vol. 76, № 7. ― P. 1761‒1771.
6. Sakuma, Kaori. Effect of cation impurities on thermal conductivity of yttria-dopped aluminum nitride / Kaori Sakuma, Akira Okada, Hiroshi Kawamoto // J. Mater. Synth. Process. ― 1998. ― Vol. 6, № 5. ― P. 315‒321.
7. Kobayashi, R. Relation between oxygen concentration in AlN lattice and thermal conductivity of AlN ceramics sintered with varios sintering additives / R. Kobayashi, Y. Moriya, M. Imamura [et al.] // J. Ceram. Soc. Jpn. ― 2011. ― Vol. 119, № 4. ― P. 291‒294.
8. Watari, Koji. Sintering chemical reactions to increase thermal conductivity of aluminum nitride / Koji Watari, Mitsuru Kawamoto, Kozo Ishizaki // J. Mater. Sci. ― 1991. ― Vol. 26, № 17. ― P. 4727‒4732.
9. Junior, A. F. Thermal conductivity of polycrystalline nitride (AlN) ceramics / A. F. Junior, D. J. Shanafield // Ceramica. ― 2004. ― Vol. 50, № 9. ― P. 247‒253.
10. Wang, L. In situ incorporation of sintering additives in Si3N4 powder by a combustion process / L. Wang, S. Roy, W. Sigmund, F. Aldinger // J. Eur. Ceram. Soc. ― 1999. ― Vol. 19, № 1. ― P. 61‒65.
11. Zakorzhevski, V. V. Specific features of selfpropagating high-temperature synthesis of the AlN‒Y2O3 system and some properties of the final products / V. V. Zakorzhevski, S. Yu. Sharivker, I. P. Borovinskaya // Int. J. SHS. ― 1999. ― Vol. 8, № 2. ― P. 165‒176.
12. Pampuch, R. Improvement sinterability and microstructure of covalent ceramics by solid combustion synthesis / R. Pampuch, J. Lis, L. Stoberski, E. Ermer // Int. J. SHS. ― 1993. ― Vol. 2, № 3. ― P. 49‒55.
Supplementary files
For citation: Zakorzhevsky V.V., Kovalev I.D., Mukhina N.I. Regularities of structure and phase formation at the synthesis of AlN‒Al2O 3‒Y 2O 3compositions in the combustion mode. NOVYE OGNEUPORY (NEW REFRACTORIES). 2020;(9):32-36. https://doi.org/10.17073/1683-4518-2020-9-32-36
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