The present study evaluated the effect of the zirconia nanoparticles on the physical and mechanical properties of ZrO₂-bearing Lithium Silicate (ZLS) glass-ceramics fabricated by SPS method. Flexural strength of the rectangular bar shapes, fracture toughness by indentation method, Vickers microhardness with a diamond pyramid indenter and, the relative density of the samples were measured. Statistical analysis was performed and Weibull failure probabilities were obtained. The results of flexural strength were analyzed with Weibull distribution analysis (95% confidence interval). According to Weibull analysis, glass-ceramic without zirconia nanoparticles had the highest Weibull modulus (m = 15.96), while composite with 20 wt % zirconia nanoparticles showed the lowest Weibull modulus (m = 1.59). The glass-ceramic without zirconia nanoparticles exposed a lower probability of failure and a higher strength than composites contain zirconia nanoparticles according to Weibull analysis. Addition of the 20 wt % ZrO₂, encourage SiO₂ crystals to be stable. Results showed the addition of zirconia causes to decrease in the physical and mechanical properties such as bending strength from 262.21 to 60.78 MPa and Vickers microhardness from 7.96 ± 0.13 to 4.87 ± 0.65 GPa during the addition of zirconia nanoparticles from 0 wt % to 20 wt %. According to the XRD patterns and FESEM images, with increasing zirconia from 0 to 20 wt %, relative density from 99.93 to 92.34%, and crystallinity from 59.5 to 25.9% decreased. Overall, in amounts greater than 10%, the fraction of SiO₂ increased and the lithium metasilicate phase formed.

本研究评估了氧化锆纳米粒子对ZrO ₂物理和机械性能的影响SPS法制备含硅酸锂（ZLS）玻璃陶瓷。测量矩形棒形状的抗弯强度，通过压痕法的断裂韧性，使用金刚石金字塔压头的维氏显微硬度以及样品的相对密度。进行了统计分析，并获得了威布尔故障概率。弯曲强度的结果通过威布尔分布分析（95％置信区间）进行分析。根据Weibull分析，不含氧化锆纳米粒子的玻璃陶瓷具有最高的Weibull模量（m = 15.96），而含有20 wt％氧化锆纳米粒子的复合材料则具有最低的Weibull模量（m = 1.59）。根据Weibull分析，与含有氧化锆纳米颗粒的复合材料相比，不含氧化锆纳米颗粒的玻璃陶瓷暴露的可能性更低，强度更高。添加20 wt％的ZrO₂，促进SiO ₂晶体稳定。结果表明，在添加氧化锆纳米粒子的过程中，从0 wt％降低到20 wt％，添加氧化锆会导致物理和机械性能下降，例如弯曲强度从262.21降低到60.78 MPa，维氏显微硬度从7.96±0.13降低到4.87±0.65 GPa。 。根据XRD图谱和FESEM图像，随着氧化锆从0到20wt％增加，相对密度从99.93到92.34％，结晶度从59.5％下降到25.9％。总体而言，以大于10％的量，SiO ₂的分数增加并且形成了偏硅酸锂相。