Abstract
Ceramic composites have received great attentions in order to improve the reliability and the mechanical properties and to create the functionalities of advanced ceramics. The control of grain boundaries exhibits the remarkable feature on developing the specific characters which cannot be predicted by the additivity of the properties derived from the two phase mixture. This review describes the concepts of the in-situ microstructure control of ceramic composites during processing. Examples are the composite powder processing of ZnO coated with MnO2 and Bi2O3 for varistor with grain boundary control, ferrite dispersed carbon composites by the pressure pyrolysis of organometallic copolymers and Ce UP composite preparation with La-β alumina platelets during sintering of consolidated powder mixture.
