Investigation of Inhomogeneous Zirconia Nanoparticles

A coexistence of the areas in separate nanocrystallites with different spatial structures having smooth coherent interface was shown by the direct observation using the techniques of high resolution transmission electron microscopy (HRTEM). Results confirm the model of a nanoparticle as an intermediate state of condensed matter in nanometer scale between clusters and bulk crystals. Particularities of phase transformations in polymorphous YSZ nanopowder and changes of its nanocrystallite state induced by powerful ultrasonic activation were studied.