Flash Spark Plasma Sintering of 3YSZ: Modified sintering pathway and impact on grain boundary formation
نویسندگان
چکیده
Yttria stabilized zirconia (3 mol% YSZ) ceramics were prepared by Flash-SPS, while allowing high heating rates up to 200 °C/s, which led the extremely fast densification within a few seconds. The had strong impact on sintering mechanisms, in terms of and grain growth. While specimens ended with 5–15 vol% porosity limited growth (< 350 nm), their hardness is higher than fully dense counterpart SPSed ceramics. Using trajectories, microstructural observations, impedance spectroscopy, we highlight altered mechanism resulted very thin boundaries compared SPS. It appears that largely advanced at boundary interfaces, no residual nano-pores junctions, where some pores size comparable present. This opens opportunities for fabrication porous lightweight good mechanical properties.
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ژورنال
عنوان ژورنال: Journal of The European Ceramic Society
سال: 2021
ISSN: ['0955-2219', '1873-619X']
DOI: https://doi.org/10.1016/j.jeurceramsoc.2021.08.013