Abstract

AbstractCeramic materials have been known for several thousands of years, but an intensive research in the last two decades was leading to the advanced materials which are becoming established in todays technology and which are expected to form the backbone of developments to the next century. The properties of the final ceramics are greatly predeterminated by the characteristics of the starting powder materials. This situation stimulated the increase of studies on preparation of taylor made powders with regard to purity, homogeneity, reactivity, grain size and grain size distribution. Starting with the classical solid state reaction a detailed review is given of wet chemical preparation techniques for perovskite type materials. Briefly some physical methods of powder preparation are mentioned. Furthermore important processes accompanying the preparation as drying, control of agglomeration behaviour and powder characterization are discussed, respectively.

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