上海大学学报(自然科学版) ›› 2025, Vol. 31 ›› Issue (1): 122-133.doi: 10.12066/j.issn.1007-2861.2542

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高熵改性氧化锆陶瓷相变与光吸收性能

张 燕1, 彭雨晴1, 张方舟2, 王启帆1, 宁立新1, 李爱军1   

  1. 1. 上海大学 材料科学与工程学院, 上海 200444; 2. 上海大学 绍兴研究院, 浙江绍兴 312074
  • 收稿日期:2023-03-22 出版日期:2025-02-28 发布日期:2025-03-03
  • 通讯作者: 李爱军 (1975—), 男, 教授, 博士生导师, 博士, 研究方向为碳纤维复合材料、碳陶复合材料. E-mail:aijun@shu.edu.cn
  • 基金资助:
    航空科学基金项目 (2017ZFS6001)

Phase transformation and optical absorption properties of high entropy modified zirconia ceramics

ZHANG Yan1, PENG Yuqing1, ZHANG Fangzhou2, WANG Qifan1, NING Lixin1, LI Aijun1   

  1. 1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China; 2. Shaoxing Research Institute, Shanghai University, Shaoxing 312074, Zhejiang, China
  • Received:2023-03-22 Online:2025-02-28 Published:2025-03-03

摘要: 通过高温烧结法制备了一组含 Ce、Al、Y 和 Si 元素的氧化锆基高熵陶瓷, 并对其相结构转变和光吸收特性等方面进行研究. X 射线衍射仪 (X-ray diffractometer, XRD) 测试结果表明, 样品能在 1 450 › 下完成立方氧化锆相的转变; 扫描电子显微镜 (scanning electron microscope, SEM) 测试结果表明, 掺杂后的氧化锆基陶瓷颗粒出现晶粒细化, 最小平均晶粒尺寸达 234 nm; X 射线光电子能谱 (X-ray photoelectron spectroscopy, XPS) 结果表明, 氧空位浓度与 Ce∶Zr 原子比呈正相关. 烧结后的样品抗弯强度最大可达 130.32 MPa, 孔隙率最低至 0.15%, 可见吸收光范围最大为 513 nm, 掺杂后最小禁带宽度达 2.97 eV.

关键词: 高熵氧化锆, 相变, 光吸收性

Abstract: A group of zirconia-based high-entropy ceramics containing Ce, Al, Y and Si was prepared using a high-temperature sintering method, and the phase structure tran-sition and optical absorption characteristics were studied. X-ray diffractometer (XRD) results showed that the cubic zirconia phase transformation was completed at 1 450 ›. Scanning electron microscopy (SEM) results showed that the doped zirconia ceramic particles exhibited grain refinement, with a minimum average grain size of 234 nm. X-ray photoelectron spectroscopy (XPS) results showed that the oxygen vacancy concentration was positively correlated with the Ce∶Zr atomic ratio. The maximum bending strength of the sintered sample was 130.32 MPa, the minimum porosity was 0.15%, the maximum visible absorption range was 513 nm, and the minimum bandgap after doping was 2.97 eV.

Key words: high entropy zirconia, phase transformation, light absorption

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