Abstract
The distribution of inter-granular glass phase in 15 mol% calcia-stabilized zirconia containing 0.3 or 10 μm size Al2O3 was estimated using a series of complex impedance spectra attained by successive removal of outer layers and subsequent measurements. For the instance of fine Al2O3 addition, the grain boundary at the near-surface region became more resistive than that at the center when sintered at T≥155°C, which emanated from the outward expelling of inter-granular phase during grain growth. In comparison, the coarse Al2O3 addition showed the homogeneous distribution of grain-boundary resistivity (ρgb). The ρgb as a function of sample depth could be an effective and sensitive index for determining the distribution of inter-granular phase.
Original language | English |
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Pages (from-to) | 13-17 |
Number of pages | 5 |
Journal | Journal of the European Ceramic Society |
Volume | 21 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2001 |
Externally published | Yes |
Bibliographical note
Copyright:Copyright 2010 Elsevier B.V., All rights reserved.
Keywords
- Grain boundaries
- Impedance spectroscopy
- Ionic conductivity
- ZrO
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry