Abstract
A material consisting mainly of α-Al2O3 and Al4O4C has been prepared by fusion of a mixture of alumina and thermoanthracite. The crystal-optical constants of Al4O4C have been determined: biaxial, negative, oblique attenuation, rhombic system,N g = 1.809,N m = 1.802,N p = 1.779,N g -N p = 0.030,z-,2V = 123°. The analytical refraction index has been found to beN av = 1.796. The phase composition and the structure of various portions of fused blocks and of granules of the fused material based on Al2O3 and C have been investigated. The interval of the ultimate temperatures of stability of the material (1400 – 1500°C) and the nature of phase and structural transformations in a reducing medium at 1500°C have been established. Articles were manufactured from the fused material 2nd tested in steel pouring with the use of gate valves. The nature of the phase and structural transformations of the articles in operation has also been investigated.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J. M. Foster, G. Long, and M. S. Hunter, “Reactions between aluminum oxide and carbon. The Al2O3-Al4C3 phase diagram,”J. Am. Ceram. Soc.,39(1), 1–11 (1956).
N. E. Filonenko, I. V. Lavrov, S. V. Andreeva, and R. L. Povzner, “On alumina spinel AlO · Al2O3,”DAN SSSR,115(3), 583–585 (1957).
G. Yamaguchi and H. Yanagida, “Study on the reductive spinel — a new spinel formula AlN-Al2O3 instead of the previous one Al3O4,”Bull. Chem. Soc. Jpn.,32(11), 1264–1265 (1959).
A. S. M. Zejus, “Preparation pur reaction a l'etal solid et principales proprietes des oxyinitrures d'aluminium,”Bull. Soc. Chim. France, No.111–12, 2123–2126 (1962).
Y. Larrere, B. Willer, I. M. Zihrmann, and M. Daire, “Stable and metastable phase-equilibrium diagrams in the Al2O3-Al4C3 binary sistem,”Rev. Int. Hautes Temp. Refract.,21(1), 3–18 (1984).
H. Takasugi, T. Matsumoto, H. Kato, and J. Tanaka, “Some studies on Al2O3-C raw materials,”Taikabutsu Overseas,4(2), 31–34 (1984).
M. I. Gasik and B. I. Emlin,Electrometallurgy of Ferroalloys, Vysshaya Shkola, Kiev (1983).
E. N. Filonenko, I. V. Lavrov, and S. V. Andreeva, “On aluminum oxycarbides,”DAN SSSR,124(1), 155–158 (1959).
E. Larsen and G. Berman,Determination of Transparent Minerals under a Microscope [Russian translation], Nedra, Moscow (1965).
V. A. Perepelitsyn,Fundamentals of Engineering Mineralogy and Petrography [in Russian], Nedra, Moscow (1987).
G. N. Kozhevnikov and A. G. Vodop'yanov,Lower Silicon and Aluminum Oxides in Electrometallurgy [in Russian], Nauka, Moscow (1977).
Author information
Authors and Affiliations
Additional information
Translated from Ogneupory, No. 3, pp. 2–7, March, 1994.
Rights and permissions
About this article
Cite this article
Ustichenko, V.A., Chistyakov, A.A. Fused material based on Al2O3 and C. Refractories 35, 81–86 (1994). https://doi.org/10.1007/BF02306787
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02306787