Preparation method for ceramic composite material, ceramic composite material, and wavelength converter
Provided is a ceramic composite material and a wavelength converter. The ceramic composite material includes: an alumina matrix, a fluorescent powder uniformly distributed in the alumina matrix, and scattering centers uniformly distributed in the alumina matrix, wherein the alumina matrix is an alumina ceramics, the scattering centers are alumina particles, the alumina particles each have a particle diameter of 1 μm to 10 μm, and the fluorescent powder has a particle diameter of 13 μm to 20 μm.
1. A ceramic composite material, comprising an alumina matrix, a fluorescent powder uniformly distributed in the alumina matrix, and scattering centers uniformly distributed in the alumina matrix, wherein the alumina matrix is a continuous alumina ceramics, the scattering centers are alumina particles, the alumina particles each have a particle diameter of 1 μm to 10 μm, and the fluorescent powder has a particle diameter of 13 μm to 20 μm.
2. The ceramic composite material according to claim 1 , wherein the fluorescent powder comprises at least one Ce 3+ -doped fluorescent powder selected from the group consisting of Ca 3 Al 2 Si 3 O 12 , Ca 3 Sc 2 Si 3 O 12 , Gd 3 Al 5 O 12 , Gd 3 Ga 5 O 12 , Tb 3 Al 5 O 12 , Tb 3 Ga 5 O 12 , Y 3 Al 5 O 12 , Y 3 Ga 5 O 12 , Lu 3 Al 5 O 12 , Lu 3 Ga 5 O 12 and Y 3 Mg 2 AlSi 2 O 12 .
3. The ceramic composite material according to claim 1 , wherein the particle diameter of the fluorescent powder is 15 μm to 17 μm.
4. A wavelength converter comprising the ceramic composite material according to claim 1 .
5. The wavelength converter according to claim 4 , wherein the wavelength converter is a wavelength conversion color wheel.