Rheological Characterization of Aqueous ZrO₂-Suspension for Additive Manufacturing

Abstract:

Water-based suspensions from commercial Tetragonal stabilized zirconia (3Y-TZP) were produced and characterized with different contents of solids and two different dispersants. According to zeta potential measurements, 3Y-TZP particles showed basic surface characteristics and IEP of around 9 when in aqueous media. The critical volume fraction of solids was about 79.6 wt%, which hindered the processing of more concentrated slurries. Rheological measurements confirmed that well dispersed slurries could be obtained with solid content as high as 79.6 wt.%. The results showed that Triton X-114 was an effective dispersant for preparing well stabilized 3Y-TZP suspensions for the layer-wise slurry deposition process.

• Periodical: Materials Science Forum (Volume 881)
• Pages: 195-199
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.881.195
• Online since: November 2016
• Authors: Micheline dos Reis Araújo, Cynthia M. Gomes, Gabriele Steinborn, Wilson Acchar, Jens Günster
• Keywords: 3Y-TZP, Laser Sintering, Zeta Potential, Zro₂

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