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Enhanced Sintering Rate of Zirconia (3Y‐TZP) Through the Effect of a Weak dc Electric Field on Grain Growth
Author(s) -
Yang Di,
Raj Rishi,
Conrad Hans
Publication year - 2010
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.03905.x
Subject(s) - materials science , sintering , grain growth , superplasticity , cubic zirconia , grain size , isothermal process , electric field , yttria stabilized zirconia , metallurgy , composite material , microstructure , ceramic , thermodynamics , physics , quantum mechanics
We show, for the first time, that a dc electric field of 20 V/cm shifts the densification curve to a lower temperature in constant heating rate experiments with yttria‐stabilized tetragonal zirconia powder (3Y‐TZP). The enhanced sintering rate is ascribed, at least in part, to the reduced rate of grain growth under the applied field, consistent with earlier experiments on the influence of such fields on grain size in superplastic deformation and isothermal grain growth in zirconia polycrystals.