Method of preparing a ceramic monolithic structure having an internal cavity contained therein.

摘要

A method of preparing ceramic monolithic structures with an internal cavity and passageways is described. A thin sheet of a ceramic material is formed by spreading the material on a glass plate with a doctor blade. Individual sheets of the material are cut or punched to form predetermined holes (24), channels (23) or various shapes therein. These individual sheets (20, 21, 22) are then stacked to form a layered structure (10). A supporting media such as paraffin wax is injected into the holes and channels to completely fill them with the media. The layered structure (10) is then pressed by unipressing and/or isostatic pressing followed by a prefiring step to remove the supporting media. Once the supporting media had been completely removed, the layered structure is then sintered to form a monolithic structure containing precise predetermined internal cavity and passageways.