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Ceramics based on the Si-Al-O-N and Related Systems

Nature Physical Science volume 238, pages 28–29 (1972)Cite this article

Abstract

TSUGE et al.1 have shown that β -Si3N4 can accommodate up to about 60% by weight Al2O3 in solid solution without major change of crystal structure but with increasing a and c unit-cell dimensions as the Al2O3 concentration increases. The products, obtained by sintering the mixed powders at 1,700 and 1,770° C, are undoubtedly similar to a new phase observed by Oyama and Kamigaito2 in mixtures of Si3N4, Al2O3 and Li2CO3 hot-pressed at 1,750° C. We report here a variety of ceramic materials built up of (Si,Al)(N,O)4 tetrahedra joined by sharing corners just as the silicate structures are built up of SiO4 and (Si,Al)O4 units.

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References

  1. Tsuge, A., Inoue, H., and Komeya, K., paper presented to the Japanese Ceramic Society, January 28, 1972.

  2. Oyama, Y., and Kamigaito, O., Japan J. Appl. Phys., 10, 1637 (1971).

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  3. Grieveson, P., Jack, K. H., and Wild, S., in The Crystal Chemistry of Ceramic Phases in the Silicon-nitrogen-oxygen and Related Systems, Progress Report No. 1, Ministry of Defence Contract N/CP.61/9411/67/4B/M.P. 387, July 1968.

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  4. Wild, S., Grieveson, P., and Jack, K. H., The Crystal Chemistry of New Metal-silicon-nitrogen Ceramic Phases, Symposium on Special Ceramics, 1970; See Special Ceramics 5 (edit. by Popper, P.), 289 (B.C.R.A., Stoke-on-Trent, July 1970).

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  6. Berkebile, C. A., Corning Report, No. L-1124, Corning Glass Works Research and Development Laboratory, July 1970.

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Authors and Affiliations

  1. Wolfson Research Group for High-Strength Materials, Crystallography Laboratory, Department of Metallurgy, The University, Newcastle upon Tyne, NE1 7RU

    K. H. JACK & W. I. WILSON

Authors
  1. K. H. JACK
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  2. W. I. WILSON
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JACK, K., WILSON, W. Ceramics based on the Si-Al-O-N and Related Systems. Nature Physical Science 238, 28–29 (1972). https://doi.org/10.1038/physci238028a0

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