Abstract
The phase relationships in the system K2O · AL2O3-Al2O3 between 1200 and 1700° C have been experimentally established. The homogeneity range of potassium β-alumina is limited by the 83 and 91 mol % Al2O3 compositions. The eutectic point between the K2O-Al2O3 and β-alumina was found to be at 1450° at about 62 mol % Al2O3 composition. An X-ray diffraction pattern analysis of potassium β-alumina is shown.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
E. R. Plante, C. D. Olson and T. Negas, Proceedings of the 6th International Conference on Electric Power Generation, Washington, D.C., June 1975, Vol. Ii, p. 211.
L. P. Cook, R. S. Parker and T. Negas, Amer. Mineralogist 62 (1977) 118.
L. P. Cook, in “Surfaces and Interfaces in Ceramic and Ceramic-metal Systems” edited by J. A. Pask and A. Evans (Plenum Press, New York, 1980) pp. 143–154.
E. Criado, J. S. Moya and S. De Aza, Ceram. Intern. 5 (1981) 41.
Ph. Havraned, Trans. J. Brit. Ceram. Soc. 77 (1978) 92.
I. Eliezer and R. A. Howald, High Temp. Sci. 10 (1978) 1.
R. S. Roth, “Phase Equilibria Research in the Portions of the System K2O-MgO-F2O3-Al2O3-SiO2”, in Advances in Chemistry Series (American Chemical Society, 1980) Chap. 20.
Y. Le Cards, J. Thery and R. Collongues, Compt. Rend. Acad. Sci. Paris C 274 (1972) 4.
J. Thery and D. Briancon, Rev. Hautes Temper. et Réfract. 1 (1964) 221.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Moya, J.S., Criado, E. & De Aza, S. The K2O·Al2O3-Al2O3 system. J Mater Sci 17, 2213–2217 (1982). https://doi.org/10.1007/BF00543730
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00543730