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Titolo:
Impedance spectroscopic estimation of inter-granular phase distribution in15 mol% calcia-stabilized zirconia/alumina composites
Autore:
Lee, JH; Mori, T; Li, JG; Ikegami, T; Takenouchi, S;
Indirizzi:
Natl Inst Res Inorgan Mat, Tsukuba, Ibaraki 3050044, Japan Natl Inst Res Inorgan Mat Tsukuba Ibaraki Japan 3050044 ki 3050044, Japan
Titolo Testata:
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
fascicolo: 1, volume: 21, anno: 2001,
pagine: 13 - 17
SICI:
0955-2219(200101)21:1<13:ISEOIP>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
GRAIN-BOUNDARY; ELECTRICAL-CONDUCTIVITY; ALUMINA ADDITIONS; SEGREGATION; RESISTIVITY; CERAMICS;
Keywords:
impedance spectroscopy; ionic conductivity; grain boundaries; ZrO2;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Lee, JH Natl Inst Res Inorgan Mat, Namiki 1-1, Tsukuba, Ibaraki 3050044, Japan Natl Inst Res Inorgan Mat Namiki 1-1 Tsukuba Ibaraki Japan 3050044
Citazione:
J.H. Lee et al., "Impedance spectroscopic estimation of inter-granular phase distribution in15 mol% calcia-stabilized zirconia/alumina composites", J EUR CERAM, 21(1), 2001, pp. 13-17

Abstract

The distribution of inter-granular glass phase in 15 mol% calcia-stabilized zirconia containing 0.3 or 10 mum size Al2O3 was estimated using a seriesof complex impedance spectra attained by successive removal of outer layers and subsequent measurements. For the instance of fine Al2O3 addition, thegrain boundary at the near-surface region became more resistive than that at the center when sintered at T greater than or equal to 1550 degreesC, 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 (rho (gb)). The rho (gb) as a function of sample depth could be an effective and sensitive index for determining the distribution of inter-granular phase. (C) 2000 Elsevier Science Ltd. All rights reserved.

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Documento generato il 21/09/20 alle ore 11:50:18