Influence of rheology on deposition behavior of ceramic pastes in direct fabrication systems

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Rheology and deposition behavior of four commercially available thick-film inks and an aqueous alumina slurry were investigated using two different slurry-based deposition systems. The first of these deposition systems, a Micropen, is a commercially available system designed for the deposition of electronic thick film circuits. The second system, referred to as a Robocaster, is a developmental system designed to build thick or structural parts. Slurry rheology was seen to have a minor effect on deposition behavior and the bead shape when deposited using the Micropen. The deposition behavior was instead dominated by drying rate; too rapid of a drying rate ... continued below

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8 p.

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King, B. H.; Morissette, S. L.; Denham, H.; Cesarano, J., III & Dimos, D. December 1998.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 17 times , with 5 in the last month . More information about this article can be viewed below.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Rheology and deposition behavior of four commercially available thick-film inks and an aqueous alumina slurry were investigated using two different slurry-based deposition systems. The first of these deposition systems, a Micropen, is a commercially available system designed for the deposition of electronic thick film circuits. The second system, referred to as a Robocaster, is a developmental system designed to build thick or structural parts. Slurry rheology was seen to have a minor effect on deposition behavior and the bead shape when deposited using the Micropen. The deposition behavior was instead dominated by drying rate; too rapid of a drying rate led to excessive clogging of the tip. Slurry rheology had a greater impact on the shape of beads deposited using the Robocaster. Highly viscous slurries yielded initially well-defined beads, whereas beads deposited using fluid slurries spread quickly. In both cases, significant spreading occurred with time. These observations only held for slurries with slow drying rates. It was observed that very fluid slurries produced well-defined beads when the drying rate was suitably high.

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8 p.

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OSTI as DE99001058

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  • Solid freeform fabrication symposium, Austin, TX (United States), 10-12 Aug 1998

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  • Other: DE99001058
  • Report No.: SAND--98-2194C
  • Report No.: CONF-980826--
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 291154
  • Archival Resource Key: ark:/67531/metadc680410

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 1998

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  • July 25, 2015, 2:20 a.m.

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  • May 5, 2016, 8:06 p.m.

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King, B. H.; Morissette, S. L.; Denham, H.; Cesarano, J., III & Dimos, D. Influence of rheology on deposition behavior of ceramic pastes in direct fabrication systems, article, December 1998; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc680410/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.