Flash self-joining of Y-TZP ceramics assisted with an AC electric field |
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| Authors: | Kohta Nambu Taisuke Kitaoka Koji Morita Kohei Soga Tomoharu Tokunaga Takahisa Yamamoto Hiroshi Masuda Hidehiro Yoshida |
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| Affiliation: | 1. Department of Materials Science and Engineering, Kyushu University, Fukuoka, Japan;2. Department of Materials Science and Technology, Tokyo University of Science, Katsushika, Tokyo, Japan;3. Materials Design Innovation Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Aichi, Japan;4. Department of Materials Science and Engineering, School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, Japan |
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| Abstract: | In this study, flash joining experiments were conducted using an AC field on 3 mol% Y2O3-stabilized tetragonal ZrO2 polycrystal (Y-TZP) bodies. Furthermore, the necessary conditions to obtain an almost complete self-joining of Y-TZP bodies were clarified. The specimens were successfully joined by applying an AC field at 60 mA mm−2 for 80 s at a furnace temperature of 1000°C, thus resulting in a successfully joined specimen with 92% of the flexural strength of the as-sintered Y-TZP body. Almost complete self-joining of Y-TZP was achieved at current densities above 30 mA mm−2, and input energy densities of >24 J mm−3. Both the input energy density and electric current were critical factors for producing the reliable joining of ceramics. |
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| Keywords: | alternate current flash joining flash sintering input energy joint strength zirconia |
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