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

Michiko Kusunoki; Masumi Rokkaku; Yuichi Ikuhara; Hiroaki Yanagida

doi:10.2320/matertrans1989.39.110

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

Michiko Kusunoki, Masumi Rokkaku, Yuichi Ikuhara, Hiroaki Yanagida

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	110-113
Number of pages	4
Journal	Materials Transactions, JIM
Volume	39
Issue number	1
DOIs	https://doi.org/10.2320/matertrans1989.39.110
Publication status	Published - 1998 Jan

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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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.",

keywords = "High-resolution electron microscopy, Magnesium, Phase transformation, Spinel, Thermal stability, Transmission electron microscopy, γ-AlO",

author = "Michiko Kusunoki and Masumi Rokkaku and Yuichi Ikuhara and Hiroaki Yanagida",

year = "1998",

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AU - Rokkaku, Masumi

AU - Ikuhara, Yuichi

AU - Yanagida, Hiroaki

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AB - 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.

KW - High-resolution electron microscopy

KW - Magnesium

KW - Phase transformation

KW - Spinel

KW - Thermal stability

KW - Transmission electron microscopy

KW - γ-AlO

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

Abstract

Keywords

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