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The effect of electric field/current has been reported to enhance sintering behavior of various materials such as metals, ceramics and those composites. Although spark-plasma-sintering (SPS) technique has widely been utilized in the densification of various materials, the field/current effects on the sintering remain unclear. Especially for insulator materials such as oxides, the field/current effects in the SPS processing are under discussion. In this work, therefore, the field/current effects in the SPS technique were examined in yttria (Y2O3) ceramics by comparing the sintering behavior using conductive and non-conductive die set-ups. The sintering behavior of Y2O3 was apparently accelerated under the conductive set-up than under non-conductive die set-up. This suggests that during the SPS processing, applied pulsed electric field/current is likely to contribute to the sintering of Y2O3 ceramics.

Rights:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

Keyword: Spark-Plasma-Sintering (SPS), Current Effect, oxide

Date published: 2025-03-15

Publisher: Japan Society of Powder and Powder Metallurgy

Journal:

• 粉体および粉末冶金 (ISSN: 05328799) vol. 72 issue. Supplement

Funding:

• JST JPMJCR1996
• JSPS 20H02444

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5404

First published URL: https://doi.org/10.2497/jjspm.16b-t5-09

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Updated at: 2025-04-03 12:30:18 +0900

Published on MDR: 2025-04-03 12:47:41 +0900