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3D-customized thin-walled ceramic mouldings produced by deep drawing of green tapes

 
: Schwarzer, Eric; Olawsky, Lukas; Hagen, Florian; Scheithauer, Uwe; Moritz, Tassilo; Richter, Hans-Jürgen; Michaelis, Alexander

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Journal of the European Ceramic Society 39 (2019), Nr.15, S.4911-4920
ISSN: 0955-2219
Bundesministerium für Bildung und Forschung BMBF (Deutschland)
01LY1211A; Extrufol
Englisch
Zeitschriftenaufsatz
Fraunhofer IKTS ()
deep drawing; ceramic green tape; tape casting; water-based; alumina

Abstract
Thin-walled 3D-customized ceramic components can be used, e.g. for inert and thermal resistant housings as well as special surface structured kiln furniture. For manufacturing such components, deep drawing of ceramic green tapes has been used. The technology has been almost not applied for processing of ceramic green tapes. A new approach was developed to realize a homogenous ceramic particle packing and hence uniform green density within a deep drawn green tape. After debinding and sintering, defect-free model structures with a dense microstructure (density > 99%) were achieved. Within this study, the deep drawing of ceramic green tapes by using a new approach was investigated. The developed approach brings several beneficial properties together, e.g. a reproducible form deviation and more importantly a homogeneous particle distribution allowing homogeneous and dense structures. With this results, the transformation of non-complex and cheap ceramic green tapes to 3D-customized and near-net-shape thin-walled mouldings becomes possible.

: http://publica.fraunhofer.de/dokumente/N-558153.html