Ceramic Strength and Its Relation to the Kinetic Parameters of Sintering

Ceramic Strength and Its Relation to the Kinetic Parameters of Sintering The ceramic strength is shown to increase with decrease in porosity and decrease in grain size of polycrystals. In sintering, the material porosity decreases and the grain size increases. A relation between the ceramic strength and the kinetic parameters of sintering is established. A general relationship for the strength σ as a function of the relative porosity Z is derived. The σ versus Z relationship exhibits a maximum whose location is determined by the ratio of the densification and grain-growth rates and by the mechanism of ceramic fracture. A comprehensive study of structural evolution of the ceramic and its strength analysis provide an insight into the mechanisms of sintering and fracture, which allows a deterministic modeling to be applied to the technology of structural and refractory ceramics. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Ceramic Strength and Its Relation to the Kinetic Parameters of Sintering

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Publisher
Springer Journals
Copyright
Copyright © 2001 by Plenum Publishing Corporation
Subject
Materials Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Materials
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1023/A:1014031032542
Publisher site
See Article on Publisher Site

Abstract

The ceramic strength is shown to increase with decrease in porosity and decrease in grain size of polycrystals. In sintering, the material porosity decreases and the grain size increases. A relation between the ceramic strength and the kinetic parameters of sintering is established. A general relationship for the strength σ as a function of the relative porosity Z is derived. The σ versus Z relationship exhibits a maximum whose location is determined by the ratio of the densification and grain-growth rates and by the mechanism of ceramic fracture. A comprehensive study of structural evolution of the ceramic and its strength analysis provide an insight into the mechanisms of sintering and fracture, which allows a deterministic modeling to be applied to the technology of structural and refractory ceramics.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Oct 9, 2004

References

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