Alfred University Research and Archive (AURA)

Engineering Powders for Ceramic 3-D Printing

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dc.contributor.advisor Carty, William
dc.contributor.advisor Shulman, Holly
dc.contributor.advisor Lee, Seong-Jin Cigno, Patrick G. 2021-08-23T18:29:51Z 2021-08-23T18:29:51Z 2018-03
dc.description Thesis completed in partial fulfillment of the requirements for the degree of Master of Science in Ceramic Engineering at the Inamori School of Engineering, New York State College of Ceramics at Alfred University en_US
dc.description.abstract The powder processing problems that control the performance of ceramic forming methods also apply to 3-D printing. Binder jet printing requires well flowing powders to form smooth powder beds, however, powders that flow well typically lack the surface area required for sintering. Granulating fine powders facilitates flow and sintering but also increases binder usage and shrinkage which is not a viable solution. in this work, a powder was engineered for 3-D printing that potentially solves the powder flow and shrinkage problems and sinters. Granules with a bimodal distribution consisting of 70% 5 μm particles and 30% 0.5 μm particles were produced. The granules were then mixed in a 10:1 size ratio (80% coarse granules, 20% fine particles). This approach solved the powder flow problem and produced high packed bed densities but only marginally sintered. Incorporating a glass frit as the fine particle fraction maintained particle flow and packing while facilitating sintering. Packing data obtained through tapping and vibration indicated that powders containing fine particles experience a "packing transition" region between 30-300 cycles. This transition exhibited significant packing density increases and does not appear to have been discussed in the literature. Packing efficiency through vibration suggests there is an optimal frequency for most efficient compaction. Conversely, there may be an optimal frequency that facilitates particle movement but does not induce improved compaction. en_US
dc.format.extent 84 pages en_US
dc.language en_US en_US
dc.language.iso en_US en_US
dc.publisher New York State College of Ceramics at Alfred University. Inamori School of Engineering. en_US
dc.relation.ispartof Scholes Library en_US
dc.rights.uri en_US
dc.subject Three-dimensional printing en_US
dc.subject Sintering en_US
dc.subject Ceramic powders en_US
dc.title Engineering Powders for Ceramic 3-D Printing en_US
dc.type Thesis en_US

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