Beta"-alumina calcination

Powers used commercial beta aluminas, Monofrax H fused brick and Alcoa XB-2 powder, as raw materials. These materials can be synthesized, with the addition of dopants for stabilizing the more conductive beta -alumina phase if desired, from the calcination of commercial aluminum salts or oxides with sodium carbonate or similar material. Beta-alumina and beta"-alumina (magnesia- and/or lithia-stabilized) have both been satisfactorily deposited. 

White crystals exists in three crystalline modifications alpha-, beta-, and gamma-Ga203 while the alpha-form is analogous to the corundum form of alumina, the beta-Ga203 is isomorphous with theta-alumina alpha-form converts to beta-modification on calcination at high temperatures (600°C) gamma form is stable at low temperatures density 6.44 g/cm (alpha-Ga203),... 

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