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Grain Size Effects in Polycrystalline Ceramics

  • R. M. Spriggs
  • T. Vasilos
  • L. A. Brissette
Conference paper
Part of the Materials Science Research book series (MSR)

Abstract

The interrelationships of pressure-sintering processing conditions in the graphite-die, ceramic-die, and ultrahigh pressure regimes, resulting micro-structures, and mechanical properties are described, particularly for dense, pure, submicron and near-submicron grain size ceramic oxides. Strength increases with decreasing grain size appear to be limited by structural subtleties which result from the processing techniques employed. Very finegrained, highly dense ceramics, as initially prepared, have strengths which are less than would be predicted on the basis of decreasing grain size. However, they respond to additional processing variations and post-fabrication treatments with changes in surface and interior structure and considerable relative strengthening.

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Copyright information

© Springer Science+Business Media New York 1966

Authors and Affiliations

  • R. M. Spriggs
    • 1
  • T. Vasilos
    • 1
  • L. A. Brissette
    • 1
  1. 1.Avco CorporationWilmingtonUSA

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