Low expansion ceramics and method of producing the same

Details Low expansion ceramics and method of producing the same Low expansion ceramics and method of producing the same

1986-05-12

1988-02-02

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

501119, 501122, 501 9, 156663, C04B 3518, C04B 3520

Patent

active

047229160

ABSTRACT:
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 P.sub.2 O.sub.5 in the cordierite ceramic and acid treating the fired or sintered body to selectively remove P.sub.2 O.sub.5 to primarily result in an amount of 0.1% by weight of P.sub.2 O.sub.5 remaining in the sintered body.

REFERENCES:
patent: 3881944 (1975-05-01), Beall et al.
patent: 3885977 (1975-05-01), Lachman et al.
patent: 3958058 (1976-05-01), Elmer
patent: 4295892 (1981-10-01), Matsuhisa et al.
patent: 4540671 (1985-09-01), Kondo et al.

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