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AssigneeFrauhofer-Gesellschaft zur Forderung der Angewandten Forschung E V
InventorsJoerg Adler, Michael Teichgraeber, Gisela Standke, Helmut Jaunich, Heike Stoever, Reinhard Stoetzel
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The disclosed invention relates to the field of ceramics and concerns an open-cell expanded ceramic which may be used in the form of a deep-bed filter, and a process for the production thereof. The primary object is to produce an open-cell expanded ceramic by a simple and economical process. This object is attained by an open-cell expanded ceramic in which the inner cavities, cracks and the porosity of the ceramic members are filled partially or completely by one or a plurality of metal and/or ceramic phases and/or glass phases. The open-cell expanded ceramic is also produced in that during or after sintering the cavities, cracks and the porosity of the ceramic members are partially or completely filled with a melt or a suspension which melt below the melting temperature of the expanded ceramic, have a coefficient of expansion similar to the coefficient of expansion of the expanded ceramic, and a very good wetting capacity, and only react partially or not at all with constituents of the expanded ceramic.
An open-cell expanded ceramic comprising ceramic struts having inner cavities, cracks and pores and wherein said inner cavities, cracks and pores of the ceramic struts are filled at least partially with at least one of a group consisting of at least one metallic phase, at least one ceramic phase and at least one silicate glass phase;
A process for the production of an open-cell expanded ceramic comprising the steps of:
A process for the production of an open-cell expanded ceramic comprising the steps of:
A process for the production of an open-cell expanded ceramic comprising the steps of:
Dependencies are inferred from the claim text.