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

Kiyoshi Okada; Akiyoshi Hattori; Yoshikazu Kameshima; Atsuo Yasumori

doi:10.1016/S0167-577X(99)00179-2

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 journal › Article

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 (S_A) 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 language	English
Pages (from-to)	175-178
Number of pages	4
Journal	Materials Letters
Volume	42
Issue number	3
DOIs	https://doi.org/10.1016/S0167-577X(99)00179-2
Publication status	Published - Jan 2000
Externally published	Yes

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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

Okada, K., Hattori, A., Kameshima, Y., & Yasumori, A. (2000). Concentration effect of Cs⁺ additive on the γ-Al₂O₃-to-α-Al₂O₃ phase transition. Materials Letters, 42(3), 175-178. https://doi.org/10.1016/S0167-577X(99)00179-2

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 journal › Article

Okada, K, Hattori, A, Kameshima, Y & Yasumori, A 2000, 'Concentration effect of Cs⁺ additive on the γ-Al₂O₃-to-α-Al₂O₃ phase transition', Materials Letters, vol. 42, no. 3, pp. 175-178. https://doi.org/10.1016/S0167-577X(99)00179-2

Okada K, Hattori A, Kameshima Y, Yasumori A. Concentration effect of Cs⁺ additive on the γ-Al₂O₃-to-α-Al₂O₃ phase transition. Materials Letters. 2000 Jan;42(3):175-178. https://doi.org/10.1016/S0167-577X(99)00179-2

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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10.1016/S0167-577X(99)00179-2