| abstract |
The invention relates to a method for producing an α-alumina powder which comprises the steps of removing water from a compound containing the following components (1), (2), (3) and (4), and calcination of the resulting product: (1) α-alumina precursor, (2) crystal seeds, (3) water, (4) nitrate ions in an amount of 2.8 to 3.3 mol per mole of aluminum ( A1) contained in the α-alumina precursor and the crystalline germs. |