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Evaluation of densification effects on the properties of 8 mol % yttria stabilized zirconia electrolyte synthesized by cost effective coprecipitation route
Ceramics International ( IF 5.2 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.ceramint.2020.09.140
Muneeb Irshad , Khurram Siraj , Rizwan Raza , Muhammad Rafique , Muhammad Usman , Qurat ul Ain , Abdul Ghaffar

Abstract In the current work, properties of 8YSZ powder synthesized by co-precipitation method and sintered at 1200 °C, 1300 °C and 1400 °C are investigated. XRD analysis shows that all 8YSZ samples exhibit cubic phase and increased crystallite size is observed with increased sintering temperature. The relative density measurements show increased densification due to increased sintering temperature and relative density >96% is obtained for 8YSZ sintered at 1400 °C. SEM micrographs also confirm that structure becomes denser with increase in sintering temperature. EDX analysis confirms the elemental composition of 8YSZ and no impurity is observed while thermal analysis reveals weight losses within different temperature ranges. High ionic conductivity and maximum power density of 0.41 Wcm−2 is obtained for cell having 8YSZ electrolyte sintered at 1400 °C owing to its compact, dense and gas tight microstructure.

中文翻译:

通过成本有效的共沉淀途径合成的 8 mol% 氧化钇稳定氧化锆电解质的致密化效应评估

摘要 在目前的工作中,研究了共沉淀法合成并在1200°C、1300°C和1400°C下烧结的8YSZ粉末的性能。XRD 分析表明,所有 8YSZ 样品都表现出立方相,并且随着烧结温度的升高,观察到晶粒尺寸增加。相对密度测量表明,由于烧结温度升高而致密化增加,并且在 1400 °C 下烧结的 8YSZ 获得了 >96% 的相对密度。SEM 显微照片还证实,随着烧结温度的升高,结构变得更加致密。EDX 分析证实了 8YSZ 的元素组成,没有观察到杂质,而热分析显示不同温度范围内的重量损失。高离子电导率和0的最大功率密度。
更新日期:2021-01-01
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