Li Maogiang

(Institute of Advanced Ceramnics and Refractories,China Builling Materials Academy,Beijing 100024)

Abstract

Liquid synthesis of ceramic powders has sume advantages, including precise control of chemical composition and its homogeneity,easy control of paricle size and easy obtaining narrow size distribution. However,liquid synthesis may result in severe agglomeration in the powders,which degrades the processing properties of the synthesised powder. The mechanism of formation of solid particles from liquid and the requirement for formation of monodispersed particles are discussed. Three mechanisms of formation of agglomerates during synthesis of powders and the measures to ease off the problems are also discussed.

Keywords：ulrafine powder; ceramic; agglomeration; liquid synthesis

DOI：10.13732/j.issn.1008-5548.1998.01.004