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Densification studies on amorphous ZrO2-Al2O3 powders

Gandhi, AS and Jayaram, V and Chokshi, AH (1999) Densification studies on amorphous ZrO2-Al2O3 powders. In: Symposium on Creep Behavior of Advanced Materials for the 21st-Century, at the 1999 TMS Annual Meeting, FEB 28-MAR 04, 1999, San Diego, California.

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Abstract

Densification characteristics of amorphous ZrO2-40 mol% Al2O3 powder with 3 to 15 mu m nominal particle size range, produced by spray pyrolysis, have been studied by conducting hot pressing experiments at 573, 723 and 873 K with uniaxial pressures of 250, 500 and 750 MPa. Most of the increase in relative density from the starting value of similar to 40% occurred during loading up to the desired pressure. The increments in density during 1 hour constant pressure dwells were less than 4% at all temperatures and pressure. Inter-particle bonding was not observed at 573 K. Correlation between the results with a viscous sintering model for hot pressing is not satisfactory for describing the behavior as normal viscous sintering.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to The Minerals, Metals & Materials Society.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 16 Mar 2012 08:14
Last Modified: 16 Mar 2012 08:14
URI: http://eprints.iisc.ernet.in/id/eprint/43921

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