Abstract
THE phase diagram for the system, ZrO2–MgO, was re-investigated by means of the quenching technique and a ribbon element diffractometer furnace. Duwez et al.1 had first established a tentative phase diagram for this system. Recently, Hinz and Dietzel2 tried to determine the phase boundaries of the cubic solid solution field. They claimed that 7 moles per cent of MgO is the lowest limit for the formation of single phase cubic solid solutions between 1,800° C and the melting point. Similar results were obtained by Stöcker3. However, it is very probable that in their experiments the specimens containing less than 7 moles per cent MgO had at least partly converted to the monoclinic phase during the quenching.
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References
Duwez, P., Odell, F., and Brown, jun., F. H., J. Amer. Ceram. Soc., 35, 107 (1952).
Hinz, I., and Dietzel, A., Ber. Dtsch. Ker. Ges., 39, 530 (1962).
Stöcker, J. H., Ph.D. thesis Faculté de Science, Paris, 1960.
Smith, D. K., and Cline, C. F., J. Amer. Ceram. Soc., 45, 249 (1962).
Büssem, W., Schusterius, C., and Ungewiss, A., Ber. Dtsch. Ker. Ges., 18, 433 (1937).
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VIECHNICKI, D., STUBICAN, V. Phase Studies Within the System ZrO2-MgO. Nature 206, 1251–1252 (1965). https://doi.org/10.1038/2061251a0
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DOI: https://doi.org/10.1038/2061251a0
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