| abstract |
The invention belongs to the technical field of sintered body materials, and in particular relates to a preparation method of α-alumina with reduced phase transition temperature and application thereof. The preparation method includes: mixing aluminum isopropoxide with a solvent, adding an ammonium bicarbonate solution for hydrolysis and drying, and heating, maintaining and cooling the dried product to obtain the obtained product. The introduction of ammonium bicarbonate reduces the phase transition temperature of α-alumina, and aluminum isopropoxide reacts with ammonium bicarbonate in the aqueous phase, so that the present invention can prepare α-alumina with higher purity only through one-step hydrolysis, and the reaction The efficiency is higher, and the method has a good application prospect in the preparation of α-alumina with high purity and low energy consumption. |