Abstract
Microwave processing of xPb(Mg1/3Nb2/3)O3–yPb(Zn1/3Nb2/3)O3–zPbTiO3 relaxor ferroelectric ceramics was investigated in a 2.45 GHz microwave radiation. The green compacts can be sintered to a density of higher than 98% theoretical with short soak time of 10–15 min at 960°C whereas 4 h of soak time was needed by conventional sintering to a comparable density. Smaller grain sizes and more uniform microstructure were developed due to volumetric heating and rapid sintering in microwave processing. Dielectric measurement showed microwave sintered samples could obtain comparable dielectric properties to the conventional sintered ones.
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