| 摘要 |
The present invention provides a processable zirconia is a sintered body formed by including: tetragonal zirconia composite powder including 79.8-92 mol% of ZrO_2, 4.5-10.2 mol% of Y_2O_3 and 3.5-7.5 mol% of Nb_2O_5 or 5.5-10.0 mol% of Ta_2O_5; and greater than 0 wt% and 2.5 wt% or smaller of TiO_2 nanopowder with respect to the weight of the composite powder. The processable zirconia has sintering density of 99% or greater, an average particle size of the bodies which is 2 μm or greater, sintered body hardness of 4-10 GPa, fracture toughness of 9-14 MPa·m^1^/^2, sintered body strength of 400-1000 MPa, and high light transmitting properties. |
