TEM study on stability of Mg-doped γ-alumina fine particles

Michiko Kusunoki, Masumi Rokkaku, Yuichi Ikuhara, Hiroaki Yanagida

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Ultrafine spherical particles of γ-Al2O3 containing 4 at% magnesium and pure γ-Al2O3 were prepared by evaporating metal Al in air. Consequently, both particles were heated at 1400°C for 6 h in a vacuum. TEM observations showed that the Mg-doped γ-Al2O3 particles were much more stable than the pure γ-Al2O3 particles. The role of Mg atoms on the stability is discussed mainly based on the results obtained by high-resolution electron microscopy and energy dispersive X-ray spectroscopy.

Original languageEnglish
Pages (from-to)110-113
Number of pages4
JournalMaterials Transactions, JIM
Volume39
Issue number1
DOIs
Publication statusPublished - 1998 Jan
Externally publishedYes

Keywords

  • High-resolution electron microscopy
  • Magnesium
  • Phase transformation
  • Spinel
  • Thermal stability
  • Transmission electron microscopy
  • γ-AlO

ASJC Scopus subject areas

  • Engineering(all)

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