THE INFLUENCE OF THE SEED CRYSTAL ON THE Α-AL2O3'S CRYSTALLIZATION IN THE ALUMINA GELS


https://doi.org/10.17073/1683-4518-2014-2-48-50

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Abstract

The resulting investigations are given in the article on the phase transformations in course of α-Al2O3 synthesis out of dehydrate alumina gel. It was shown that the introducing of α-Al2O3 seed crystals in the alumina gel doesn't influence the initiation temperature of the γ-Al2O3 transformation into α-phase. However the presence of the seed crystal increases significantly the velocity of transformation which under certain condition leads to the decrease in the temperature of complete a-phase crystallization. Ill. 1. Ref. 6. Tab. 2. 


About the Authors

A. V. Galakhov
Институт металлургии и материаловедения имени А. А. Байкова РАН, Москва
Russian Federation


V. A. Zelenskii
Институт металлургии и материаловедения имени А. А. Байкова РАН, Москва
Russian Federation


E. V. Shelekhov
Институт металлургии и материаловедения имени А. А. Байкова РАН, Москва
Russian Federation


L. V. Kovalenko
Институт металлургии и материаловедения имени А. А. Байкова РАН, Москва
Russian Federation


References

1. Галахов, А. В. Влияние воды на кристаллизацию α-Al2O3 в алюмогелях / А. В. Галахов, В. А. Зеленский, Е. В. Шелехов [и др.] // Новые огнеупоры. ― 2014. ― № 1. ― С. 24‒27.

2. Shelleman, R. A. Alpha alumina transformation in seeded boehmite gels / R. A. Shelleman, G. L. Messing, M. Kumagai // J. Non-cristalline Solids. ― 1986. ― Vol. 82. ― P. 277‒285.

3. 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.

4. Krell, A. Nanocorundum ― advanced synthesis and processing / A. Krell, H. Ma // NanoStructured Materials. ― 1999. ― Vol. 11, № 8. ― P. 1141‒1153.

5. Rietveld, H. M. Line profiles of neutron powderdiffraction peaks for structure refinement / H. M. Rietveld // Acta Crystallographica. ― 1967. ― Vol. 22. ― P. 151‒152.

6. 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 INFLUENCE OF THE SEED CRYSTAL ON THE Α-AL2O3'S CRYSTALLIZATION IN THE ALUMINA GELS. NOVYE OGNEUPORY (NEW REFRACTORIES). 2014;(2):48-50. https://doi.org/10.17073/1683-4518-2014-2-48-50

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