Abstract The current study reports on the improvement of mechanical properties of 3 mol% Y2O3 stabilized tetragonal ZrO2 (3Y-TZP) by introduction of tourmaline through ball milling and subsequent densification by pressureless sintering at 800, 1200, 1300, 1400 °C. Findings demonstrate that no matter which sintering temperature the 3Y-TZP ceramic containing 2 wt% tourmaline reach a maximum value in flexural strength and fracture toughness as compared to other composite ceramics. As the tourmaline content is 2 wt% and the sintering temperature is 1300 °C, the flexural strength and fracture toughness of the composite ceramics are the highest, increases of 36.2% and 36.6% over plain 3Y-TZP ceramic respectively. The unique microstructure was systematically investigated through X-ray diffraction, scanning electron microscopy, energy dispersive spectrum, and flourier transform-infrared. The strengthening and toughening mechanism of tourmaline in 3Y-TZP ceramic were also discussed.

中文翻译：

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掺入电气石颗粒的 3 mol% Y 2 O 3 稳定四方 ZrO 2 的机械性能增强

摘要 目前的研究报告了通过球磨引入电气石并随后在 800、1200、1300、1400 °C 下通过无压烧结致密化来改善 3 mol% Y2O3 稳定四方 ZrO2 (3Y-TZP) 的机械性能。研究结果表明，与其他复合陶瓷相比，含 2 wt% 电气石的 3Y-TZP 陶瓷无论在何种烧结温度下都能达到最大的弯曲强度和断裂韧性值。电气石含量为2 wt%，烧结温度为1300 ℃时，复合陶瓷的抗弯强度和断裂韧性最高，分别比普通3Y-TZP陶瓷提高36.2%和36.6%。通过 X 射线衍射、扫描电子显微镜、能量色散谱、和荧光变换红外。还讨论了电气石在3Y-TZP陶瓷中的强化和增韧机制。