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Effect of Green-State Processing on the Sintering Stress and Viscosity of Alumina Compacts

Guillon, Olivier and Rödel, Jürgen and Bordia, Rajendra K. (2007):
Effect of Green-State Processing on the Sintering Stress and Viscosity of Alumina Compacts.
In: Journal of the American Ceramic Society, pp. 1637-1640, 90, (5), ISSN 0002-7820, [Online-Edition: http://dx.doi.org/10.1111/j.1551-2916.2007.01572.x],
[Article]

Abstract

Uniaxial viscosity and sintering stress of pressure filtrated alumina compacts were evaluated from sinter-forging measurements. At a particular density, significantly higher values of sintering stresses are observed compared with specimens made by uniaxial dry pressing followed by cold isostatic pressing. In addition, the uniaxial viscosity at a given density is lower for the pressure-filtrated samples. These differences may be explained by a more homogeneous microstructure and finer pore size and emphasize the importance of green density and packing on the evolution of the constitutive parameters for crystalline materials.

Item Type: Article
Erschienen: 2007
Creators: Guillon, Olivier and Rödel, Jürgen and Bordia, Rajendra K.
Title: Effect of Green-State Processing on the Sintering Stress and Viscosity of Alumina Compacts
Language: English
Abstract:

Uniaxial viscosity and sintering stress of pressure filtrated alumina compacts were evaluated from sinter-forging measurements. At a particular density, significantly higher values of sintering stresses are observed compared with specimens made by uniaxial dry pressing followed by cold isostatic pressing. In addition, the uniaxial viscosity at a given density is lower for the pressure-filtrated samples. These differences may be explained by a more homogeneous microstructure and finer pore size and emphasize the importance of green density and packing on the evolution of the constitutive parameters for crystalline materials.

Journal or Publication Title: Journal of the American Ceramic Society
Volume: 90
Number: 5
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 18 May 2011 15:20
Official URL: http://dx.doi.org/10.1111/j.1551-2916.2007.01572.x
Identification Number: doi:10.1111/j.1551-2916.2007.01572.x
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