Silicon nitride ceramics with sodium ion conductive grain boundary phase

Hirokazu Kawaoka, Tohru Sekino, Takafumi Kusunose, Koichi Niihara

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Sodium ion-conductive silicon nitride ceramic with Na2O-Al 2O3-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.

本文言語English
ページ(範囲)2752-2755
ページ数4
ジャーナルJournal of Materials Research
18
12
DOI
出版ステータスPublished - 2003 12

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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