| 摘要 |
Cordierite ceramic consisting mainly of cordierite in crystal phase after fired and having a mean pore size of 2-50 microns and a thermal expansion coefficient of not more than 16x10-7 (1/ DEG C.) over the range of 25-1000 DEG C. and being produced by starting from a batch including a magnesia raw material with an average particle size of 5-150 microns. |
