Title

Electric Pulse Assisted Rapid Consolidation of Ultrafine Grained Alumina Matrix Composites

Abstract

The densification of alumina is influenced by the electrical pulse and the starting crystal structure of alumina powder. The application of electric pulsing enhanced the densification and the level of enhancement depended on the pulsing sequence. A pure alumina specimen with >98% theoretical density was obtained in less than 10 min at 1573 K. The average grain size was 0.7 μm. Similar sintering parameters were used to synthesize alumina based nanocomposites with >99% theoretical density in 5-10 min sintering times. The electric pulse and pressure assisted sintering is a very effective way to synthesize nanocomposites in a short sintering time at lower temperatures.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Alumina; Electric Pulse; Ultrafine Grained

Library of Congress Subject Headings

Sintering

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2000 Elsevier, All rights reserved.


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