Interparticle Forces Behind Plasticity of Ceramic Pastes: A Literature Review

ABSTRACT Plastic‐forming methods of ceramic pastes, such as extrusion, have been significant in the ceramics industry for many years. Despite its significance, the plasticity of ceramic pastes is poorly understood. It is essential to understand the fundamentals of ceramic paste plasticity to develop a forming technology with superior performance. The ceramic pastes’ plasticity can be characterized by the co‐existence of apparently opposing properties, that is, “flowability” and “rigidity.” It has been claimed that the apparently opposing properties can be achieved by controlling the interparticle interaction that is attractive at long range and repulsive at short range. The present article aims to verify the model based on experimental results from interaction force measurements. The interaction forces are gathered by the atomic force microscope (AFM) colloid probe technique. On the basis of the discussion, it is concluded that the above microscopic model is available to interpret ceramic pastes’ macroscopic behaviors.