Thermal expansion anisotropy, phase instability and internal strains into aluminum titanate polycrystals: an in situ high-temperature study

Aluminum titanate polycrystalline materials are commonly used at an industrial scale for various applications. The intrinsic properties of b- Al2TiO5 is strongly anisotropic and not easy to determine. Nevertheless, quite recent works, on single crystals or polycrystalline bulk or powdered materials, allow access more or less to the variation as a function of the temperature of some of these intrinsic properties. During this experiment, we expect to get data allowing us to understand the role of the microstructure on the actual properties of aluminum titanate dense polycrystals.