| 摘要 |
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 SiO2, from about 31 to about 40 weight percent Al2O3, from about 12 to about 19 weight percent MgO, from about 0.15 to about 1 weight percent CaO, from zero to 250 ppm Na2O, and from zero to about 150 ppm K2O, the body having a flexural strength of at least about 20,000 psi (about 140 MPa).
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