| abstract |
The cordierite-quality sintered compact of the present invention contains cordierite as a main component and contains silicon nitride or silicon carbide. The cordieritic sintered body preferably has a coefficient of thermal expansion at 40 to 400°C of less than 2.4 ppm/°C, an open porosity of 0.5% or less, and an average grain size of 1 µm or less. |