Strengthened cordierite having minor amounts of calcia

Details Strengthened cordierite having minor amounts of calcia Strengthened cordierite having minor amounts of calcia

1987-04-27

1988-05-17

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501153, 501154, 501108, C04B 3504

Patent

active

047450924

ABSTRACT:
Synthetic raw materials are used to prepare a sintered refractory body consisting essentially of doped cordierite having from about 47.5 to about 56 weight percent SiO.sub.2, from about 31 to about 40 weight percent Al.sub.2 O.sub.3, from about 12 to about 19 weight percent MgO, from about 0.15 to about 1 weight percent CaO, from zero to 250 ppm Na.sub.2 O, and from zero to about 150 ppm K.sub.2 O, the body having a flexural strength of at least about 20,000 psi (about 140 MPa).

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