In present work the high-energetic pulsed methods were used to obtain 9.5YSZ (9.5 mol. % Y203) nanosized powders and their effective pulsed compaction. As a result a dense c-YSZ ceramics with submicron structure (average grain size ~ 130 nm) and high mechanical properties (microhardness ~ 20 GPa, elasticity modulus ~ 280 GPa and fracture toughness - 2.4 MPa-m05) were obtained. An indentation size effect, being in good agreement with Nix and Gao theory, at penetration depth up to 2.2 mkm was found.