Abstract
A theory is given for the relationship between the applied force and time for ceramic pastes during relaxation. The theory provides a simple expression based on the fundamental parameters of the system. Experimental work has been carried by means of squeeze film flow tests. In this investigation, it is found that a three element model can be used to describe the relaxation response of the ceramic paste used in the present work. This model indicates that ceramic pastes are viscoelastic fluids with highly viscous properties. The particle packing in the material may affect the relaxation response. The addition of fibre can enhance the elastic property of ceramic paste. The experimental data have demonstrated that using fibre to replace powder can make the pastes more solid-like. The surface condition can influence the relaxation parameters, which is evident when the material is highly elastic.
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