Ceramic Sintering And Properties Characterization Based On Solid Mechanics

Abstract

Solid mechanics offers a considerable potential to describe densification and deformation during sintering as well as the polycrystal structure-properties relationship. Densification and deformation are described during sintering by means of appropriate creep constitutive laws. These laws connect macroscopic behavior with structural parameters such as grain growth and porosity. FEM simulation allows to obtain maps to describe density, stress, and deformation distribution in order to have a better characterization of macroscopic deformation during sintering. Effective properties estimation for polycrystal is developed based on a homogenization technique applied to a representative volume element (RVE) with the help of the Finite Element Method (FEM). Implementing this model, the effect of the crystallographic texture on the ceramic properties can be estimated by considering the interaction at grain boundaries, which provides a more realistic analysis of the material properties.