[en] To produce rapidly crystallized particles of the melts on the basis of zirconium dioxide, partially stabilized by yttrium oxide with numerous defects a facility for particle production by means of rapid crystallization from melts was developed. To increase physicomechanical properties of the products the main efforts were directed to reduction of powder initial particle size up to 0.5 μm and, as a consequence, to the increase in the powder specific surface. It is shown that powders with specific surface value up to 20 m²/g and with equivalent particle size of approximately 95 nm from high-strength granules of the above-mentioned composition in the system studied can be produced only when using combined method of grinding: vibrogrinding (up to 60 h), subsequent attrition grinding (up to 3 h), explosion treatment and repeated grinding in a high-energy attritor