Stereolithography-based additive manufacturing of ceramics has received
tremendous attention in academic and industrial communities. In order to
fabricate silicon carbide (SiC) components with complex shapes by
stereolithography, a high SiC loaded ceramic slurry with low viscosity and
excellent curing ability is required. However, it is challenging to meet
these slurry requirements. In this work, the effects of resin formulation,
dispersant, particle size, solid content and ball milling time on the
properties of SiC ceramic slurry were systematically studied. The SiC
slurries were prepared by using four precursor SiC powders having different
particle sizes and modified by high temperature oxidation to reduce its UV
absorbance. Additionally, the suitable SiC slurries for stereolithography
were prepared by ball milling under appropriate processing parameters, and
the geometrically complex SiC green bodies were subsequently fabricated.
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