Influence of Various Consolidation Techniques on the Green Microstructure and Sintering Behavior of Alumina Powders

Submicrometer alumina powders, of both standard and narrow particle‐size distributions, were consolidated by dry‐pressing and colloidal‐forming techniques. The resulting green compacts were characterized in terms of pore‐size distribution, green density, shrinkage behavior, and sintered density. The...

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Veröffentlicht in:Journal of the American Ceramic Society 1988-11, Vol.71 (11), p.970-977
Hauptverfasser: ROOSEN, ANDREAS, BOWEN, H. KENT
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BOWEN, H. KENT
description Submicrometer alumina powders, of both standard and narrow particle‐size distributions, were consolidated by dry‐pressing and colloidal‐forming techniques. The resulting green compacts were characterized in terms of pore‐size distribution, green density, shrinkage behavior, and sintered density. The interrelationships between powder characteristics, green compact microstructure, and sintering behavior are discussed. There are distinct differences between the characteristics of compacts that were directly consolidated from powder suspensions and those that were dry pressed. Dense microstructures can be achieved at low temperatures using narrow‐sized, well‐dispersed powders with colloidal‐forming techniques.
doi_str_mv 10.1111/j.1151-2916.1988.tb07567.x
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source Wiley Online Library Journals Frontfile Complete; Periodicals Index Online
subjects Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Technical ceramics
title Influence of Various Consolidation Techniques on the Green Microstructure and Sintering Behavior of Alumina Powders
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