Yttrium stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramics containing 2 mol% and 2.5 mol% yttria were prepared by mixing 3 mol% yttria-doped zirconia powders with yttria-free zirconia powders. The microstructures of the sintered samples were studied using SEM, XRD, and Raman spectra. In addition, an ultra-sharp V-notch (ρ < 0.5 μm) was induced by femtosecond laser to measure its actual fracture toughness by single-edge V-notched beam (SEVNB) method. The results reveal that mixture-based Y-TZP with 2.5 mol% yttria has deeper phase transformation depth, and fracture toughness of 6.4 MPa^.m^1/2 is obtained. The heterogeneous distribution of the yttrium is taken account for the excellent properties.

通过将3摩尔％的掺杂氧化钇的氧化锆粉末与无钇的氧化锆粉末混合，制备了包含2摩尔％和2.5摩尔％氧化钇的钇稳定的四方氧化锆多晶（Y-TZP）陶瓷。使用SEM，XRD和拉曼光谱研究了烧结样品的微观结构。此外，飞秒激光诱发了一个超锐利的V形缺口（ρ<0.5μm），并通过单边V形缺口（SEVNB）方法测量了其实际的断裂韧性。结果表明，具有2.5 mol％氧化钇的混合物基Y-TZP具有更深的相变深度，断裂韧性为6.4 MPa ^。获得m ^1/2。钇的非均质分布被认为具有优异的性能。