Dic Corporation

Shaowei Yang

Wei Zhao

Cheng Liu

Jianjun Yuan

Meng Li

Tomoki Dohi

Hironobu Oki

Masamichi Hayashi

Minoru Tabuchi

Shingo Takada

Jian Guo

Taro Morimitsu

The present invention provides an alumina particle containing molybdenum (Mo) and an inorganic coating part provided on the surface of the alumina particle.

Composite particle and method of producing composite particle

The composite particle of the present invention includes an alumina particle having a card-house structure which is formed of three or more pieces of plate-like alumina and in which the pieces of plate-like alumina are fixed to each other; and an inorganic coating part provided on a surface of the plate-like alumina.

A plate-like alumina particle, in which a ratio I(006)/I(ll3) of a peak intensity I(006) at 20=41.6±0.3 degrees which corresponds to a (006) face to a peak intensity I(113) at 20=43.3±0.3 degrees which corresponds to a (113) face of diffraction peaks obtained by X-ray diffraction measurement using a Cu-Ka ray, is 0.2 or more. A method for manufacturing the plate-like alumina particle including mixing an aluminum compound including an aluminum element, a molybdenum compound including a molybdenum element, and a shape-controlling agent to produce a mixture and firing the mixture.

Plate-like alumina particle and method for manufacturing plate-like alumina particle

It relates to zirconia particles containing molybdenum and each having a polyhedron shape. The molybdenum is preferably unevenly distributed in surface layers of the zirconia particles. It also relates to a method for producing the zirconia particles. The method includes mixing a zirconium compound and a molybdenum compound to form a mixture and firing the mixture.

Zirconia particles and method for producing zirconia particles

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Qingdao, China

Shaowei Yang