| Abstract Scope |
Ultrafast high-temperature sintering (UHS) is currently emerging as a powerful tool to consolidate ceramics in the seconds/few minutes timescale. It employs graphite felts as resistive heating elements that, due to their low thermal capacity, can be heated to ultrahigh temperatures in a matter of seconds.
Herein, we discuss the potential of rapid heating in densifying oxide ceramics like Y2O3-doped ZrO2 (YSZ). Specifically, we focus on (i) the particle size effect on rapid heating and related accelerated densification and (ii) the integration with materials with complex shapes.
UHS actually be integrated with additive manufacturing techniques to produce small components with complex shapes. In particular, we show that fused filament fabricated YSZ gyroids can be debinded and sintered by UHS within one minute, obtaining bodies with properties analogous to those obtained by conventional firing. The effect of carbon contamination from the binder decomposition on the consolidation is discussed.
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