After-effect at indentation of the surface of transparent ceramics on the basis of zirconium dioxide
Experimental results describing the nature of surface layer destruction in optically transparent ZrO 2-10Y 2O 3 ceramics at diamond pyramid hardness test at loadings of 4.9-98.1 N have been shown. The ceramics made from the granulated zirconium dioxide powder with an addition of 10 wt. % of Y 2O 3  sintered by the SPS method (Spark Plasma Sintering) was studied. The complex picture of the sample surface destruction with formation of a fracture area between radial cracks, material delamination and also interferential pictures were observed.