THE INFL UENCE OF WATER ON THE Α-AL2O3 CRYSTALLIZING WITHIN ALUMINA GELS
https://doi.org/10.17073/1683-4518-2014-1-24-27
Abstract
The resulting investigations are presented for phase's transformations in course of α-Al2O3 synthesis out of dehydrated alumina gel. It was shown that removing of water from the precursor infl uences essentially on the transformation chain in the synthesis temperature range. The crystallization temperature of α-Al2O3 comparing to that of the gel deposited from the water solution reduces by 300 °C, that is from 1200 till 900 °C. Ill. 2. Ref. 9. Tab. 1.
About the Authors
A. V. GalakhovRussian Federation
V. A. Zelenskii
Russian Federation
E. V. Shelekhov
Russian Federation
L. V. Kovalenko
Russian Federation
References
1. Лайнер, А. И. Производство глинозема / А. И. Лайнер, Н. И. Ерёмин, Ю. А. Лайнер, И. З. Певзнер. — М. : Металлургия, 1978.
2. Чалый, В. П. Гидроокиси металлов / В. П. Чалый. — Киев : Наукова думка, 1972.
3. Alumina as a ceramic material / ed. by W. H. Gitzen. — ACerS, Columbus OH, 1970.
4. Loffler, L. Transformation mechanism of the degidration of diaspore / L. Loffler, W. Mader // J. Amer. Ceram. Soc. — 2003. — Vol. 86, № 4. — Р. 534–540.
5. Shelleman, R. A. Alpha alumina transformation in seeded boehmite gels / R. A. Shelleman, G. L. Messing, M. Kumagai // Journal of non-cristalline solids. — 1986. — Vol. 82. — P. 277–285.
6. Li, J. G. Synthesis and sintering behavior of a nanocrystalline α-alumina powders / J. G. Li, X. Sun //Acta Mater. — 2000. — Vol. 48. — P. 3103–3112.
7. Krell, A. Nanocorundum — advanced synthesis and processing / A. Krell, H. Ma // NanoStructured Materials. — 1999. — Vol. 11, № 8. — P. 1141–1153.
8. Rietveld, H. M. Line profiles of neutron powder-diffraction peaks for structure refinement / H. M. Rietveld // Acta Crystallographica. — 1967. — Vol. 22. — P. 151, 152.
9. Shelekhov, E. V. Programs for X-ray analysis of polycrystals / E. V. Shelekhov, T. A. Sviridova // Metal Science and Heat Treatment. — 2000. — Vol. 42, № 8. — P. 309–313.
Supplementary files
For citation: Galakhov A.V., Zelenskii V.A., Shelekhov E.V., Kovalenko L.V. THE INFL UENCE OF WATER ON THE Α-AL2O3 CRYSTALLIZING WITHIN ALUMINA GELS. NOVYE OGNEUPORY (NEW REFRACTORIES). 2014;(1):24-27. https://doi.org/10.17073/1683-4518-2014-1-24-27
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