Heredity and modification of nanostructured ZrO2 ceramics during obtaining
Using X-ray, AFM, XPS, phonon spectroscopy the formation mechanisms of microstructure and interface regions have been studied for nanoceramics ZrO2 + 5 wt.% Y2O3 manufactured by dry uniaxial compaction under powerful ultrasound (PU) action. The nanoceramics structure depends on compacting conditions of nanopowder (been determined by PU-action). The ceramics have preserved scaly structure in their grains just like in initial powder (40 - 50 nm). In the course of compacting, the ultrasound applied to the sample activates thermostimulated proceses to form the phase composition in sup surfice slabs of ceramics fragments, making transarent boundaries beetwen them in the helium temperatures.