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Integrally Cored Ceramic Mold Fabricated by Ceramic Stereolithography

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Abstract:

Ceramic stereolithography (SLA) was used to fabricate a ceramic investment casting mold with the integral core within a ceramic mold shell, produced in a single patternless construction from refractory‐grade fused silica. The SLA build material was a photopolymerizable suspension of 60 vol% fused silica dispersed in a monomer solution based on 1,6‐hexanediol diacrylate. The mold had 1047 layers, each 100 μm thick. Green body dimensions before sintering were approximately 0.7% smaller than the design within the plane of the layers, and approximately 0.3% larger than the design perpendicular to the layers. The sintering shrinkage was 10.7±0.2% in both directions.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1744-7402.2010.02568.x

Affiliations: Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136

Publication date: November 1, 2011

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