CPC C01F 7/442 (2013.01) [B22F 1/05 (2022.01); B22F 9/30 (2013.01); B32B 5/30 (2013.01); C04B 35/185 (2013.01); C04B 35/65 (2013.01); B22F 2302/253 (2013.01); B22F 2302/256 (2013.01); B22F 2304/10 (2013.01); B32B 2255/04 (2013.01)] | 9 Claims |
1. Flaky alumina particles comprising a surface layer in which mullite is exclusively present, wherein
as determined by XRD analysis, a ratio of a peak intensity of the mullite observed at 2θ=26.2±0.2° to a peak intensity of a (104) face of α-alumina observed at 2θ=35.1±0.2° is greater than or equal to 0.02, and
the flaky alumina particles have a pH of an isoelectric point of 2 to 5 as determined by measurement of a zeta potential, the isoelectric point being a point at which a potential is zero.
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