Creep Mechanisms in Multiphase Ceramics

Multiphase ceramics and composites generally contain a hard phase embedded in a creeping matrix. The hard phase can occupy a wide range of volume fraction. The creep behaviour depends on the nature of percolation in the material. Below the threshold for point-contact percolation, particles are independent, and the creep viscosity is increased due to the rheology of matrix flow around the particles. Above the threshold for facet-contact …