Low expansion ceramics and method of producing the same

摘要

Cordierite series dense and low expansion ceramics have excellent thermal shock resistance property, being airtight, heat resistant and having high dimensional stability at high temperatures can be achieved by incorporating 2-10% by weight of P2O5 in the cordierite ceramic and acid treating the fired or sintered body to selectively remove P2O5 to primarily result in an amount of 0.1% by weight of P2O5 remaining in the sintered body.