17:10 〜 17:30
[16B-T5-09] Effect of Electric Field/Current on Sintering Behavior of Yttria during SPS Processing
キーワード:SPS, Current effect, Yttria
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.