Kinetics of compaction of hot-pressed composite materials in the TiN - AlN system

Kinetics of compaction of hot-pressed composite materials in the TiN - AlN system The kinetics of compaction of hot-pressed materials in the TiN - AlN system has been studied. The shrinkage of TiN - AlN composites (for an AlN concentration varying within 10 – 90 vol.%) occurs within 10 – 15 min in the temperature range 1750 – 1850°C at a pressure of 65 MPa. The calculated activation energy for hot-pressed ceramic [50% TiN + 50% AlN] was found to be 5.0 eV, intermediate between the activation energies for neat TiN and AlN species. This implies that the sintering of hot-pressed heterophase mixtures characterized by a decrease of temperature under isothermal conditions is an activated process. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Kinetics of compaction of hot-pressed composite materials in the TiN - AlN system

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Publisher
Springer Journals
Copyright
Copyright © 2004 by Springer Science+Business Media, Inc.
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.
10.1007/s11148-005-0026-1
Publisher site
See Article on Publisher Site

Abstract

The kinetics of compaction of hot-pressed materials in the TiN - AlN system has been studied. The shrinkage of TiN - AlN composites (for an AlN concentration varying within 10 – 90 vol.%) occurs within 10 – 15 min in the temperature range 1750 – 1850°C at a pressure of 65 MPa. The calculated activation energy for hot-pressed ceramic [50% TiN + 50% AlN] was found to be 5.0 eV, intermediate between the activation energies for neat TiN and AlN species. This implies that the sintering of hot-pressed heterophase mixtures characterized by a decrease of temperature under isothermal conditions is an activated process.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Mar 15, 2005

References

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