The Effects of Al2O3 Source on Phase Formation, Crystallite Size and Microstructure of Na-β"-Alumina Solid Electrolyte

Abstract:

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Na--alumina with MgO stabilized was produced through solid state reaction. High purity starting material, -Al2O3, -Al2O3, Na2CO3 and MgO were used. The desired amount of starting materials corresponding to the nominal formula Na(1+x)MgxAl(11-x)O17 were mixed and calcined at temperature 1200 for 10 h under atmospheric pressure. The effect of Al2O3 source on phase formation and averaged crystallite size of Na--alumina were investigated via X-ray diffraction (XRD), SEM and TGA/DTA. The XRD result show that formation of Na--alumina with high purity is obtained when -Al2O3 was used. The larger crystallite size is found for sample prepared form -Al2O3. For SEM study the Na--alumina microstructure is seen as randomly packing of several sheets. Calculated crystallite size of sample prepared from -Al2O3 show the larger value compared to that one prepared from -Al2O3.

Info:

Periodical:

Advanced Materials Research (Volumes 93-94)

Edited by:

S. Suttiruengwong and W. Sricharussin

Pages:

272-275

DOI:

10.4028/www.scientific.net/AMR.93-94.272

Citation:

W. Prachamon et al., "The Effects of Al2O3 Source on Phase Formation, Crystallite Size and Microstructure of Na-β"-Alumina Solid Electrolyte", Advanced Materials Research, Vols. 93-94, pp. 272-275, 2010

Online since:

January 2010

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Price:

$35.00

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