| 摘要 |
PROBLEM TO BE SOLVED: To provide a ceramic sintered compact having high reflectance both in a long wavelength region and in a short wavelength region, and to provide an electronic component mounting substrate using the same.SOLUTION: This ceramic sintered compact contains alumina as a main component, contains zirconia including a stabilizer, and contains ≥0.05 to ≤0.5 mass% titanium in terms of oxides. The ceramic sintered compact is excellent in image recognition, since a reflectance in a short wavelength region can be heightened, while keeping a reflectance in a long wavelength region high, because alumina and zirconia present white color. |
