アルミナスラリーの遠心圧密法による評価 : 圧密特性と流動特性の相関性

概要

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Correlations have been investigated between centrifugal consolidation properties and flow characteristics of alumina slurries, prepared with polymeric dispersant and with pH adjustment. Attention has been paid to the deformation behavior of particle network structure in order to identify the main factor governing the consolidation process. For both slurry systems, final packing fraction and delay time observed in the centrifugal consolidation rest can be well correlated with the yield stress and Bingham plastic viscosity of flow curve, respectively. It is shown from the experiments using several molecule weight polymers that deformation of polymeric dispersant affects consolidation process of slurries prepared with polymer molecules having the length comparable to primary particles. It is also suggested that wet shaping process of ceramics should be analyzed from the point of view of relationships between applied stress on particles and particle interactive force, instead of apparent viscosity of original slurry.
社団法人日本セラミックス協会の論文
1999-06-01