Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Walzengießerei Coswig Gmbh

Gisela Standke

Helmut Jaunich

Reinhard Stoetzel

Jörg Adler

Joerg Adler

J&ouml;rg Adler

Heike Heymer

Stefan Nelle

Thomas Füssel

Michael Teichgraeber

Heike Stoever

Alexander Füssel

Daniela Haase

Daniela BÖTTGE

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.

Open-cell expanded ceramic with a high level of strength, and process for the production thereof

The present invention relates to the field of ceramics and to a ceramic network which can, for example, be applied as a deep-bed filter and a method for the production and utilization thereof. The present invention provides a ceramic network in which the mechanical stability is improved and/or an application-dependent structure can be specifically adjusted. To this end, a ceramic network is provided which comprises two or three dimensional ceramic struts that are connected to one another. The cavities in the ceramic struts have a cross-sectional area with a circular or approximately circular or extensively circular or a convex or multiply convex contour. In addition, a method is provided in which a fiber network is produced. The fiber network comprises polymer fibers and/or natural fibers and/or other fibers, with the fibers each having cross-sectional area with a circular or approximately circular or extensively circular or a convex or multiply convex contour. According to the present invention, a ceramic network is utilized while in contact with liquids or gases.

Ceramic network, method for the production and utilization thereof

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Dresden, Germany

Gisela Standke