Method for manufacturing ceramic article and ceramic article

A method for manufacturing a ceramic article, comprising:

• a first step of forming a shaped object that contains silica, by at least repeating a step (i) and a step (ii),
• the step (i) being a step of disposing a powder that contains a plurality of components, and
• the step (ii) being a step of sintering or melting and solidifying the powder by irradiating the powder with a laser beam;
• a second step of removing an unsolidified powder around the shaped object, the unsolidified powder being disposed by repeating the step (ii);
• and
• a third step of performing, after the second step, a heating treatment of a maximum temperature Ts at 1470° C. or more and less than 1730° C. to heat the shaped object,
• wherein the ceramic article has a phase-separated structure that includes a first phase and a second phase, the first phase contains an oxide of silicon, and the second phase contains an oxide of a metallic element,
• wherein the first phase and the second phase forms a eutectic with each other, and
• wherein a eutectic temperature TE of the eutectic, the maximum temperature TS of the heating treatment in the third step, a melting point Tm of the oxide of silicon and a melting point Ti of the oxide of the metallic element satisfy TE<TS<Tm and Tm<Ti.