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Meeting MS&T23: Materials Science & Technology
Symposium Additive Manufacturing of High and Ultra-high Temperature Ceramics and Composites: Processing, Characterization and Testing
Presentation Title Anisotropic Shrinkage of Additively Manufactured Ceramics Via Stereolithography
Author(s) Kevin T. Strong, Brian Lester, Dale Cillessen
On-Site Speaker (Planned) Brian Lester
Abstract Scope The lithography ceramic manufacturing (LCM) approach for additive manufactured ceramics builds 3D structures by UV curing the ceramic ink layer-by-layer. As a result, the ceramics anisotropically shrink during sintering with the Z plane shrinking up to 10% more than the XY plane. In addition, print parameters such as print layer thickness can alter the Z:XY plane shrinkage ratio. Predictive tools accounting for this anisotropy are necessary to ensure accurate part dimensions after the sintering process. A modified Skorohold-Olevsky Viscous Sintering (SOVS) model was used to developed for anisotropic shrinkage. In addition, the master-sintering curve (MSC) approach was explored for its applicability to LCM ceramics. Several different ceramic materials (94% alumina, zirconia, and zirconia toughened alumina) were printed, and shrinkage measurements were made in the Z and XY orientation. These results were compared to predictions to assess model performance.SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525.


3D Printing of Ceramic Composites
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Additive Manufacturing for Functionally Graded Advanced Ceramics
Additive Manufacturing of Silicon Carbide Ceramics at the Micron-/nano- Particle Size for Hypersonic Capabilities
Additive Manufacturing of Silicon Nitride Using Stereolithography
Anisotropic Shrinkage of Additively Manufactured Ceramics Via Stereolithography
Carbide Based Fiber Growth by Laser Chemical Vapor Deposition
Effect of Variations in Carbon Fiber Loading of Silicon Carbide and Zirconium Diboride Cmcs Through Direct Ink Writing
Extrusion Based 3-D Printing of Reinforced SiC Using Hydrogel Pastes
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