ALUMINA GRAIN, PREPARATION METHOD THEREFOR AND USE THEREOF
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United States of America
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Mar 20, 2025
app pub date -
Dec 2, 2024
filing date -
Dec 2, 2024
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Abstract
A preparation method of an alumina powder includes the following steps: subjecting the raw material powder having a particle size not exceeding 1,000 mesh to a shear treatment in the presence of a solvent and a polymerization inhibitor to obtain a stable suspension; mixing the suspension with a crystal plane growth guiding agent uniformly and subjecting the mixture to a hydrothermal treatment under a hermetic conditions, then performing a solid-liquid separation, and subjecting the solid to drying and roasting. The alumina powder contains alumina grains having a single-crystal structure and bas an approximate regular octahedral stereoscopic morphology. Eight sides of the alumina grain belong to the {111} family of crystal planes of γ-state alumina, and the grain size is 5-100 μm.
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