Abstract
Dense and translucent BaZrxCe0.8−xY0.2O3−δ (x=0.5, 0.6, 0.7) proton conductors were firstly and successfully prepared by Spark Plasma Sintering (SPS) at a temperature of 1350°C without sintering aids’ addition. XRD, SEM and EDS were applied to determine the phase purity, morphology and element composition of prepared pellets, respectively. Moreover, the sintering behaviors of these proton conductors were monitored and analyzed through the on-line sintering curves. The obtained results indicate that a lowered sintering temperature (<1400°C) and a fast cooling rate (⩾200°C/min) represent two key parameters to prepare dense Ce-containing BaZrO3–BaCeO3 based proton conductors.
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