Effect of two-step sintering (TSS) on microstructure and mechanical properties of ceria-stabilized zirconia-toughened alumina with added TiO₂ (CSZTA–TiO₂) was studied. A coprecipitation technique was used to produce the CSZTA–TiO₂ powders. The synthesized powders were compacted using a uniaxial hydraulic press and conventionally sintered in air. The phase and microstructure of sintered samples were studied using X-ray diffraction and scanning electron microscopy techniques. Phases were quantified using the Rietveld refinement method. Different TSS schedules were followed to optimize microstructure and mechanical properties. Mechanical properties of the CSZTA-4TiO₂ composite were evaluated and found as follows: Vickers's hardness of 1650 ± 9.6 HV10, indentation fracture toughness of 8.45 ± .14 MPa √m, compressive strength of 2088 MPa, and Young's modulus of 158 GPa.

中文翻译：

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两步烧结对氧化铈稳定氧化锆增韧氧化铝添加二氧化钛 (CSZTA–TiO2) 微观结构和力学性能的影响

研究了两步烧结 (TSS) 对添加 TiO ₂的氧化铈稳定氧化锆增韧氧化铝(CSZTA–TiO ₂ ) 的微观结构和力学性能的影响。共沉淀技术用于生产 CSZTA–TiO ₂粉末。使用单轴液压机压实合成粉末，并按常规在空气中烧结。使用 X 射线衍射和扫描电子显微镜技术研究了烧结样品的相和微观结构。使用 Rietveld 细化方法对相进行量化。遵循不同的 TSS 计划以优化微观结构和机械性能。CSZTA-4TiO _{2的机械性能}复合材料的评估结果如下：维氏硬度为 1650 ± 9.6 HV10，压痕断裂韧性为 8.45 ± .14 MPa √m，抗压强度为 2088 MPa，杨氏模量为 158 GPa。