Fabricating Ceramic Components with Water Dissolvable Support Structures by the Ceramic On-Demand Extrusion Process
This paper describes a further development of the novel Ceramic On-Demand Extrusion (CODE) process, with focus on fabricating ceramic components that have external/internal features and cannot be fabricated without the use of support structures. The minimum angle of a wedge-shaped part that can be fabricated using Al2O3 (alumina) paste without a support structure is first determined. An inorganic sacrificial material, CaCO3 (calcium carbonate), is then identified for building support structures. After fabrication the green part is dried and then sintered. During sintering, the main material densifies, while the sacrificial material decomposes and is then dissolved in water or acid. Sample parts are fabricated and evaluated.
W. Li et al., "Fabricating Ceramic Components with Water Dissolvable Support Structures by the Ceramic On-Demand Extrusion Process," CIRP Annals - Manufacturing Technology, vol. 66, no. 1, pp. 225-228, Elsevier USA, Jan 2017.
The definitive version is available at http://dx.doi.org/10.1016/j.cirp.2017.04.129
Mechanical and Aerospace Engineering
Materials Science and Engineering
Keywords and Phrases
Additive manufacturing; Ceramic; Extrusion; 3D printers; Alumina; Calcium carbonate; Ceramic materials; Fabrication; Ground supports; Sintering; Extrusion process; Novel ceramics; On demands; Sacrificial material; Support structures
International Standard Serial Number (ISSN)
Article - Journal
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