The Effect of Drying Process for Alumina Precursor Solution Stabilized with Formic Acid on the Phase Transformation to α-Al₂O₃ and its Particle Morphology

Abstract

In this study, α-Al₂O₃ particles were synthesized from alumina precursor solution stabilized with formic acid （abbreviated as AlFo3）. The drying process of AlFo3 affected on the phase transformation and morphology of the synthesized α-Al₂O₃ particles. The powder obtained through drying of AlFo3 at 150℃ in drying oven transformed to α-Al₂O₃ single phase at the temperature of 950℃, which is about 200℃ lower than that reported in the typical precursor of aluminum hydroxide.