Mechanisms of Incipient Chemical Reaction between Ca(OH)2and SiO2under Moderate Mechanical Stressing

Tomoyuki Watanabe, Tetsuhiko Isobe, Mamoru Senna

研究成果: Article査読

30 被引用数 (Scopus)

抄録

The structure of mechanically induced precursor in an amorphous state between Ca(OH)2and SiO2was determined by solid state MAS and CP/MAS29SiNMR spectroscopies, and the changes in the behavior of crystallization by linear heating were studied by X-ray diffractometry. A large broad Q0peak due to the short-range order of hydrated calcium silicates appeared in the29SiNMR spectra of mechanically induced precursors. The formation of the new ordering is confined in the near-surface region of SiO2particles, as confirmed by comparing MAS and CP/MASNMR spectra. When the amorphous precursor obtained above was subsequently heated, a rapid solid state reaction led to single phasedα-CaSiO3as the final product.

本文言語English
ページ(範囲)284-289
ページ数6
ジャーナルJournal of Solid State Chemistry
130
2
DOI
出版ステータスPublished - 1997 5 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • 凝縮系物理学
  • 物理化学および理論化学
  • 無機化学
  • 材料化学

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