Mechanochemical synthesis of CaTiO3 from a CaO-TiO2 mixture and its HR-TEM observation

Guomin Mi, Yasukazu Murakami, Daisuke Shindo, Fumio Saito

Research output: Contribution to journalConference article

33 Citations (Scopus)

Abstract

Anatase (TiO2) is transformed into rutile via brookite within 1 h by room temperature grinding using a planetary ball mill. This polymorphic transformation of anatase leads to the mechanochemical synthesis of the crystalline CaTiO3 from the mixture with CaO easier than from the CaO and rutile mixture. The amount of CaTiO3 in the ground product increases with improving its crystallinity as the grinding progresses. They reach a 20-nm size by about 5 h of grinding, and the grain boundary and lattice fringe appear clearly as the grinding progresses. Copyright (C) 1999 Elsevier Science S.A.

Original languageEnglish
Pages (from-to)162-166
Number of pages5
JournalPowder Technology
Volume105
Issue number1-3
DOIs
Publication statusPublished - 1999 Nov 1
EventProceedings of the 1998 9th European Symposium on Communication - Albi, France
Duration: 1998 Sep 81998 Sep 10

Keywords

  • Anatase
  • Calcium titanate
  • Dry grinding
  • Mechanochemical synthesis
  • Microstructure
  • Rutile

ASJC Scopus subject areas

  • Chemical Engineering(all)

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