Stabilization of tricalcium phosphate slurries against sedimentation for stereolithographic additive manufacturing and influence on the final mechanical properties |
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Authors: | Markus Pfaffinger Malte Hartmann Martin Schwentenwein Jürgen Stampfl |
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Affiliation: | 1. Institute of Material Science and Technology, TU Wien, Vienna, Austria;2. Lithoz GmbH, Vienna, Austria |
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Abstract: | Ceramic parts manufactured by lithography‐based ceramic manufacturing (LCM) excel in resolution and surface quality. The material for LCM is a photosensitive ceramic particle‐filled slurry which needs to have homogeneous properties over time and during each processing step. The goal of this study was to use “mechanical” stabilization for a tricalcium phosphate‐filled slurry done by increasing slurry viscosity, solids loading, or inducing thixotropic behavior. The modified slurries were compared with a nonstable reference slurry. While all methods lead to increased storage stability, only the stabilized slurry with 0.5 wt% fumed silica is stable during the printing process. |
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Keywords: | bioceramic scaffold stabilization stereolithography tricalcium phosphate |
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