Translucent ceramics of 12CaO · 7Al2O3 with microporous structure

Katsuro Hayashi, Masahiro Hirano, Hideo Hosono

研究成果: Contribution to journalArticle査読

15 被引用数 (Scopus)

抄録

We examined the densification of 12CaO · 7Al2O3 (C12A7), which has a microporous lattice framework with a cavity of approximately 0.4 nm. Fully densified translucent ceramics are obtained when hydrated C12A7 powders prepared as precursors are sintered in a dry oxygen atmosphere at 1300°C. The average transmittance between 400-800 nm for 1-mm-thick samples is improved up to approximately 70% with a 48-h increase in the sintering time. Dissociation of water molecules at the grain-pore interface into grains which entraps hydroxide ions in the crystallographic cage, and the release of the hydroxide ions into the atmosphere during the sintering procedure are considered to play crucial roles in the pore-annihilation processes.

本文言語英語
ページ(範囲)1244-1247
ページ数4
ジャーナルJournal of Materials Research
17
6
DOI
出版ステータス出版済み - 6 2002
外部発表はい

All Science Journal Classification (ASJC) codes

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

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