Abstract
The formation of glass in the system CaO-Al2O3-CaF2 has been investigated in sealed platinum capsules having about one atmosphere pressure of AlF3 vapour. Transparent colourless glass could be obtained in the low-fluoride moderate-alumina region of the system (Al2O3 35 to 60%, CaF2 0 to 20%). With the concentration of CaF2 exceeding 20% considerable amount of quench crystals of CaF2 appeared in the glass. Moderate-alumina low-lime melts containing more than 35% CaF2 occur in an immiscibility zone. At the low-fluoride periphery of the liquid immiscibility zone a small zone of metastable liquid immiscibility has been found. The results of electron microscopic and infra-red spectroscopic studies of a few selected glasses have been analysed in combination with the molar refractivity data to reflect upon the co-ordination characteristics of aluminium in these glasses.
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References
A. K. Chatterjee andG. I. Zhmoidin,J. Mater. Sci. 7 (1972) 93.
W. Gutt, A. K. Chatterjee andG. I. Zhmoidin,ibid 5 (1970) 11.
G. I. Zhmoidin andA. K. Chatterjee,Izv. AN SSSR Metally 6 (1971) 46.
G. I. Zhmoidin, A. K. Chatterjee andI. I. Plyusnina,Zh. Priklad. Spektroskopii,XVI (6) (1972) 1061.
A. S. Povarennykh, “Aspects of Theoretical Minerology in the USSR” (edited by M. H. Botley and S. I. Tomkeieff) (Pergamon Press, New York, 1964).
G. I. Zhmoidin,Izv. AN SSSR Metally 3 (1970) 70.
H. W. Safford andAlexander Silverman,J. Amer. Ceram. Soc. 30 (7) (1947) 203.
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Chatterjee, A.K. Glass formation in the system CaO-Al2O3-CaF2 . J Mater Sci 9, 1073–1077 (1974). https://doi.org/10.1007/BF00552820
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DOI: https://doi.org/10.1007/BF00552820