Originally for the extrusion of ceramic bricks and tiles, clay and water were used to endow ceramic particle mixtures with sufficient plastic behaviour to permit practical shaping of the ceramic bodies. High-performance ceramics, however, often require the elimination of clay from extrusion formulations because the chemistry of the clay is incompatible with that of the desired ceramic materials. Therefore organic materials are frequently used in ceramic extrusion to provide plastic flow. Not only plastic behaviour is important for the extrusion of ceramic bodies. There are many other characteristics that can be tailored by the suitable addition of organics in a ceramic extrusion paste, or feedstock.
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Clemens, F. (2009). Thermoplastic Extrusion for Ceramic Bodies. In: Händle, F. (eds) Extrusion in Ceramics. Engineering Materials and Processes. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-27102-4_17
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