Concentration effect of Cs+ additive on the γ-Al2O3-to-α-Al2O3 phase transition

Kiyoshi Okada, Akiyoshi Hattori, Yoshikazu Kameshima, Atsuo Yasumori

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The effect of Cs+ additive on the γ-Al2O3-to-α-Al2O3 phase transition was investigated as a function of the Cs+ concentration by powder X-ray diffraction and specific surface area (SA) measurements. The addition of Cs+ increasingly retarded the γ-to-α phase transition with increasing Cs+ concentration, reading a maximum at 5 mol% addition, at which the transition temperature was increasing by about 200 °C. This Cs+ concentration corresponds to an amount of cation which would almost fully cover the surface of the γ-Al2O3 grains.

Original languageEnglish
Pages (from-to)175-178
Number of pages4
JournalMaterials Letters
Volume42
Issue number3
DOIs
Publication statusPublished - Jan 2000
Externally publishedYes

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Phase transitions
Specific surface area
X ray powder diffraction
Superconducting transition temperature
Cations
Positive ions
transition temperature
cations
diffraction
x rays

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Concentration effect of Cs+ additive on the γ-Al2O3-to-α-Al2O3 phase transition. / Okada, Kiyoshi; Hattori, Akiyoshi; Kameshima, Yoshikazu; Yasumori, Atsuo.

In: Materials Letters, Vol. 42, No. 3, 01.2000, p. 175-178.

Research output: Contribution to journalArticle

Okada, Kiyoshi ; Hattori, Akiyoshi ; Kameshima, Yoshikazu ; Yasumori, Atsuo. / Concentration effect of Cs+ additive on the γ-Al2O3-to-α-Al2O3 phase transition. In: Materials Letters. 2000 ; Vol. 42, No. 3. pp. 175-178.
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