Compositions: ceramic – Ceramic compositions – Aluminum compound containing
Patent
1992-01-10
1993-02-23
Maples, John S.
Compositions: ceramic
Ceramic compositions
Aluminum compound containing
501118, 501127, 429193, C04B 3510, C04B 3520, H01M 618
Patent
active
051889943
ABSTRACT:
A beta alumina sintered body having a wide optimum sintering temperature range and a high sodium ion conductivity includes 8.0-10.0 wt % of sodium oxide, 3.0-5.5 wt % of magnesium oxide, 0.01-1.0 wt % of tin oxide, and the remainder of aluminum oxide. This sintered body is manufactured by mixing raw materials including 8.0-10.0 wt % of sodium oxide, 3.0-5.5 wt % of magnesium oxide, 0.01-1.0 wt % of tin oxide, and the remainder of aluminum oxide to obtain raw material powder; forming the raw material powder to obtain a formed body; and sintering the formed body to obtain a beta alumina sintered body.
REFERENCES:
patent: 3687735 (1972-08-01), Inoue
patent: 4138455 (1979-02-01), Shaikh et al.
patent: 4539276 (1985-09-01), Harbach
Allitsch, G. et al., "Sodium Strontium) Beta Aluminas . . . ", Inst. Tech. Elek., Ber. Bun.-GBS. Phys. Chem. 92(11), 1988, pp. 1303-1306.
Chemical Abstracts, vol. 92, No. 10, Mar. 10, 1980, Columbus, Ohio, US; abstract No. 86430z, T. Keneda; `Ionic Conductivity and Raman Spectra of Sodium-Lithium, Potassium-Lithium and Potassium-Tin Beta-Alumina`, p. 689.
Ichikawa Shuichi
Takahashi Tomonori
Maples John S.
NGK Insulators Ltd.
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