Method of producing aluminum hydroxide-coated SiC particles, dispersion solution and molded body containing same, and sintered body formed using same

A method for producing a coated SiC particle, comprising:

• an oxide layer removing step of subjecting a SiC particle to an oxide layer removing treatment to obtain a SiC particle subjected to the oxide layer removing treatment, in which an amount of SiO2 per unit surface area does not exceed 0.150 mg/m2;
• and
• a coating layer forming step of forming a coated particle having a coating layer containing aluminum hydroxide on a surface of the SiC particle subjected to the oxide layer removing treatment with a pH of a dispersion containing the SiC particle subjected to the oxide layer removing treatment, sodium aluminate, and water in a range of 9 or more and 12 or less,
• wherein the coated SiC particle contains the SiC particle subjected to the oxide layer removing treatment and a coating layer with which the SiC particle subjected to the oxide layer removing treatment is coated,
• the coating layer contains aluminum hydroxide, and
• an amount of SiO2 per unit surface area of the SiC particle subjected to the oxide layer removing treatment does not exceed 0.150 mg/m2.