| 摘要 |
The invention uses plaster, CaSo4.H2O, in any of its forms. It adds frit in the amount of at least 20 percent by volume of the plaster. That combination, together with water, can be molded like a plaster even though the plaster ingredient is one of the plaster cements that ordinarily is not castable. It sets like plaster. Unlike plaster, the set bodies can be fired and vitrified so that it becomes ceramic. Unlike the raw materials conventionally employed as ceramics, the "greenware" body need not be dried to leather hardness. Instead, it can be fired immediately while wet, even sopping wet.
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