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polymerized to consolidate the particle structure within the precursor slurry. The process then forms a gel type of mixture, which is then cast into a proper mould. The next step, after the gel solidification, it is removed from the mould in a controlled manner and then being dried to form a green body. The outcome here has interesting mechanical properties and is capable of being machined at this step. Eventually, the binder is burnt out and the final scaffold sintering will take place.
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In this technique, the precursor materials typically consist of a monomer, cross linker, free radical initiator or catalysts are placed into an aqueous suspension. Such precursor conforms to a slurry that is then foamed before it undergoes a direct consolidation step. In this step, the binder becomes
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Gel casting was developed in Canada in the 1960s and ever since it became an interesting manufacturing forming process for near-net-shape, very large, high-quality, complex ceramic parts with specified threshold strength.
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Si, W; Graule, TJ; Baader, FH; Gauckler, LJ (1999). "Direct coagulation casting of silicon carbide components".
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is a direct foaming technique used to produce ceramic and polymeric scaffolds.
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