Silicon Nitride Ceramics with Sodium Ion Conductive Grain Boundary Phase

Sodium ion-conductive silicon nitride ceramic with Na2O–Al2O3–SiO2 glass as the grain boundary phase was fabricated by adding Na2CO3, Al2O3, and SiO2 as sintering additives. The electrical conductivity was two and four orders of magnitude higher than that of Si3N4 ceramic with Y2O3 and Al2O3 additiv...

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Bibliographic Details
Published inJournal of materials research Vol. 18; no. 12; pp. 2752 - 2755
Main Authors Kawaoka, Hirokazu, Sekino, Tohru, Kusunose, Takafumi, Niihara, Koichi
Format Journal Article
LanguageEnglish
Published New York, USA Cambridge University Press 01.12.2003
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Summary:Sodium ion-conductive silicon nitride ceramic with Na2O–Al2O3–SiO2 glass as the grain boundary phase was fabricated by adding Na2CO3, Al2O3, and SiO2 as sintering additives. The electrical conductivity was two and four orders of magnitude higher than that of Si3N4 ceramic with Y2O3 and Al2O3 additives at 100 and 1000°C, respectively. This result clearly indicates that ionic conductivity can be provided to insulating structural ceramics by modification of the grain boundary phase without dispersion of conductive particles.
Bibliography:istex:2BD47EE9F11C27C4AD872318CC5EF433CB40F534
ark:/67375/6GQ-GMWNQLH1-G
Present address: Energy Electronics Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan.
PII:S0884291400070886
ArticleID:07088
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0884-2914
2044-5326
DOI:10.1557/JMR.2003.0383