| abstract |
The present invention relates to a flaky alpha-alumina crystal having a large aspect ratio and a method for producing the same, and more specifically, hydrolyzing and mixing an aqueous aluminum precursor solution, an aqueous zinc precursor solution, and an aqueous tin precursor solution containing a water-soluble solvent. The present invention relates to a flaky alpha-alumina crystal containing aluminum oxide, zinc oxide and tin oxide produced by aging, drying and crystallization steps after producing a gel. The crystalline body has an average particle thickness of 0.5 μm or less, an average particle diameter of 30 μm or more, and an aspect ratio of 100 or more, and is therefore useful as a high-quality pearlescent pigment substrate, abrasive, ceramic material and filler. It is. [Selection] Figure 2 |