Conclusions
By incorporating certain substances, which, at low temperatures develop a liquid phase, it is possible to prepare by hot pressing at 1000–1300°C high-density (98–99.8% of the theoretical density) products from highly refractory oxides (MgO and Al2O3), including their simultaneous synthesis from their compound (Mg Al2O4).
The role of the liquid phase with this method of hot pressing consists in partially facilitating the grain slip at the initial stages of the process, but mainly in the fact that the liquid phase is a medium through which diffusion occurs, contributing to the densification of the material and its recrystallization. In this case the correspondences between the melting point and the pressing temperature, the structure of the liquid phase, and its composition are decisive.
The method of hot pressing highly refractory oxides at low temperatures and in the presence of additives, forming a melt and volatilizing during prolonged subsequent heating, is promising for pressing pure and high purity materials.
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Literature cited
I. S. Jackson, Powder Metallurgy,73, No. 8, 101 (1963).
I. D. Macleland and E. I. Zehms, J. Amer. Ceram. Soc.,46, No. 8, 77 (1967).
D. M. Choi and H. Palmous, Nat. Aeran. Admin.,16, No. 338, 86 (1962).
P. Murray and W. E. Rogers, Trans. Brit. Ceram. Soc.,53, No. 4, 477 (1954).
R. M. Spriggs and T. Vasilos, Amer. Ceram. Soc. Bull.,42, No. 9, 447 (1963).
D. A. Buckner et al., J. Amer. Ceram. Soc.,45, No. 9, 435 (1962).
R. A. Alliegro et al., J. Amer. Ceram. Soc.,39, No. 3, 387 (1956).
R. Caillant and P. Pointeed, Proceedings of the International Conference on the Peaceful Uses of Atomic Energy,8, No. 4, 600 (1956).
R. Chang and C. J. Rhodes, J. Amer. Ceram. Soc.,45, No. 8, 379 (1962).
A. C. Chaklader and V. T. Baker, Amer. Ceram. Soc. Bull.,44, No. 3, 285 (1965).
R. M. Spriggs et al., J. Amer. Ceram. Soc.,46, No. 10, 518 (1963).
Manual for the Chemist [in Russian], Vol. II, Khimiya, Moscow-Leningrad (1964).
I. S. Kainarskii et al., Bull. Sci.-Tech. Info., UNIIO, No. 5, 16 (1959).
I. S. Kainarskii et al., Collection of Papers from UNIIO, No. 9, 139 (1968).
I. S. Kainarskii et al., Ogneupory, No. 2, 46 (1967).
E. V. Degtyareva et al., in: Papers from UNIIO, No. 9, 82 (1968).
Roy Rice, Space Aeronautics,39, No. 5, 109 (1963).
L. Atlas, J. Amer. Ceram. Soc.,40, No. 6, 196 (1957).
I. W. Nelson and I. B. Cutler, J. Amer. Ceram. Soc.,41, No. 10, 406 (1958).
H. I. Krick et al., Trans. Brit. Ceram. Soc.,58, No. 1, 406 (1959).
W. D. Kingery et al., J. Amer. Ceram. Soc.,46, No. 8, 391 (1963).
W. D. Kingery, Ceramic Fabrication Processes [Russian translation], IL (1960), p. 163.
I. S. Kainarskii and I. G. Orlova, ZhNKh, No. 3, 1416 (1958).
I. S. Kainarskii and E. V. Degtyareva, ZhPKh, No. 1, 255 (1953).
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Translated from Ogneupory, No. 8, pp. 36–40, August, 1971.
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Kainarskii, I.S., Orlova, I.G. & Prokopenko, M.I. Hot pressing of oxides in the presence of a liquid phase. Refractories 12, 513–517 (1971). https://doi.org/10.1007/BF01283078
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DOI: https://doi.org/10.1007/BF01283078