Manufacturing Cellular Materials Via Three-Dimensional Printing of Spray-dried Metal Oxide Ceramic Powder

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CBW.DR.VRAP07.DRAFT.pdf (1.74 MB)
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Williams, Christopher Bryant
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http://hdl.handle.net/1853/32891
Abstract
Cellular materials, metallic bodies with gaseous voids, are a promising class of materials that offer high strength accompanied by a relatively low mass. Unfortunately, existing manufacturing techniques constrain a designer to a predetermined part mesostructure, material type, and macrostructure. In this paper, the authors document their design rationale for the selection of the Three-Dimensional Printing (3DP) additive manufacturing process as a means to fabricate metallic cellular materials. This is achieved by selectively printing a solvent into a bed of spray-dried metal oxide ceramic powder. The resulting green part undergoes reduction and sintering post-production processes in order to chemically convert it to metal.
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National Science Foundation (Grant #DMI-0522382)
Date
2007
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