高熵改性氧化锆陶瓷相变与光吸收性能  

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

作　　者：张燕 彭雨晴 张方舟 王启帆 宁立新 李爱军[1] ZHANG Yan;PENG Yuqing;ZHANG Fangzhou;WANG Qifan;NING Lixin;LI Aijun(School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China;Shaoxing Research Institute,Shanghai University,Shaoxing 312074,Zhejiang,China)

机构地区：[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

出　　处：《上海大学学报(自然科学版)》2025年第1期122-133,共12页Journal of Shanghai University:Natural Science Edition

基　　金：航空科学基金项目 (2017ZFS6001)。

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1450℃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.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 1450℃.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.

关 键 词：高熵氧化锆 相变 光吸收性 

分 类 号：TB33[一般工业技术—材料科学与工程]