Ceramic composites and their production methods

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Problem : We will provide a method for producing ceramic composites that produce light with high brightness by reducing the spread of emitted light. Solution : The first particle size by laser diffraction scattering method is 0.0 1 μm or more 2. 0 μm or less, and the first standard deviation is 0.0. 2 or more 2. The first rare earth aluminate phosphor that is 0 or less and the second particle size is 2.5 mm. It is 1 μm or more and 20 μm or less, and the second standard deviation is 0.0. 2 or more 0. The content of the second rare earth aluminate phosphor comprising a second rare earth aluminate phosphor that is 7 or less and rare earth oxide particles, with a total amount of the first and second rare earth aluminate phosphors and rare earth oxide particles as 100% by mass, and the content of the first rare earth aluminate phosphor is 69% by mass% or more. It is 8% by mass or less, and the content of the second rare earth aluminate phosphor is 4% by mass% or more and 30% by mass or less, and the content of rare earth oxide particles is 0.0% It is a method for preparing a molded body molded from a raw material mixture that is 2% by mass or more and 10% by mass or less, and the molded body is first heat treated at 1200 ° C. or higher at 1800 ° C. or lower, and a first sintered body is obtained. [Selection Figure]Figure 1