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Dense, bubble-free ceramic deposits from aqueous suspensions by electrophoretic deposition

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Abstract

The characteristics of electrophoretic deposition (EPD) of positively charged particles onto a cathode were investigated using aqueous alumina and zirconia suspensions. The deposition was performed using several kinds of metal substrates at different current densities. For most substrate materials, a large number of macropores appeared in the deposit, and their size increased with the current density due to gas bubble formation. However, no macropores were formed in the deposit on a palladium substrate, regardless of the current density. The green density and sintering properties of the EPD deposits on a palladium substrate from aqueous suspensions were the same as from slip casting. Bubble-free zirconia/alumina laminate composites were also fabricated by EPD from aqueous suspensions.

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Author notes

  1. Benjamin D. Hatton

    Present address: Department of Metallurgy and Materials Science, University of Toronto, Room 140, 184 College Street, M5S 3E4, Toronto, Ontario, Canada

Authors and Affiliations

  1. National Research Institute for Metals, 1-2-1 Sengen, 305-0047, Tsukuba, Ibaraki, Japan

    Tetsuo Uchikoshi, Kiyoshi Ozawa, Benjamin D. Hatton & Yoshio Sakka

Authors
  1. Tetsuo Uchikoshi
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  2. Kiyoshi Ozawa
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  3. Benjamin D. Hatton
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  4. Yoshio Sakka
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Uchikoshi, T., Ozawa, K., Hatton, B.D. et al. Dense, bubble-free ceramic deposits from aqueous suspensions by electrophoretic deposition. Journal of Materials Research 16, 321–324 (2001). https://doi.org/10.1557/JMR.2001.0048

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  • DOI: https://doi.org/10.1557/JMR.2001.0048

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