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Sintering and microstructure of glass-coated nanocrystalline yttria-stabilized tetragonal zirconia powder: Effect of the glass

Published online by Cambridge University Press:  31 January 2011

R. Ramamoorthy  and
R. Chaim
R. Ramamoorthy
Affiliation:
Department of Materials Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
R. Chaim
Affiliation:
Department of Materials Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
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Abstract

Nanocrystalline yttria-stabilized zirconia (nc-Y-TZP) powders coated with 10 vol% sodium strontium silicate glass were prepared by the sol-gel method. The glass is found to uniformly coat the zirconia particles or particle aggregates. The presence of the glass was found to enhance the densification of the powder compacts leading to 97% of the theoretical density compared to 90% in the pure nc-Y-TZP. It also resulted in a fine microstructure, homogeneous particle shape, and narrow size distribution. The polyhedral-shaped faceted grains in the sintered pure Y-TZP were converted to round-shaped grains in the glass containing specimens

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Articles
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Journal of Materials Research , Volume 16 , Issue 1 , January 2001 , pp. 296 - 302
Copyright
Copyright © Materials Research Society 2001

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