Low expansion ceramics and method of producing the same.

摘要

Cordierite series dense and low expansion ceramics of excellent thermal shock resistant property, airtight property, heat resistant property and high dimensional stability at high temperatures can be provided by incorporating 2-10% by

weight of P2O5 in the cordierite ceramics and acid treating the fired or sintered body to selectively remove mainly P205 to less than 2% by weight from the sintered body.