摘要
近年高熵氧化物的出现为研发性能优异的无机非金属材料提供了全新的理念。本文采用固相反应法制备(Ce_(0.2)Pr_(0.2)Nd_(0.2)Sm_(0.2)Y_(0.2))_(2)O_(3)高熵稀土氧化物粉体,分析煅烧温度对其物相结构及物相转变规律的影响,系统研究该高熵氧化物的显微结构特点。结果表明,当煅烧温度为1300℃时,样品已经形成立方结构(Ia-3),但存在少量其他杂相;当煅烧温度为1500℃时,形成了具有单相立方结构的(Ce_(0.2)Pr_(0.2)Nd_(0.2)Sm_(0.2)Y_(0.2))_(2)O_(3)高熵稀土氧化物粉体。Ce、Pr、Nd、Sm、Y和O各元素均匀分布在晶粒中,具有典型的高熵稀土氧化物特征。
In recent years,the emergence of high-entropy oxides provides a novel conception for researching and developing new inorganic materials with excellent performance.In this work,(Ce_(0.2)Pr_(0.2)Nd_(0.2)Sm_(0.2)Y_(0.2))_(2)O_(3) high-entropy rare earth oxide powders were prepared by solid phase reaction method.The effect of calcining temperature on the phase structure,phase transition rule and microstructure of(Ce_(0.2)Pr_(0.2)Nd_(0.2)Sm_(0.2)Y_(0.2))_(2)O_(3) high-entropy oxides powders were systematically studied.The results show that cubic structure(Ia-3)alongside tiny amounts of second phase can be detected in the sample that calcined at 1300℃.When the calcination temperature is at 1500℃,(Ce_(0.2)Pr_(0.2)Nd_(0.2)Sm_(0.2)Y_(0.2))_(2)O_(3) high-entropy rare earth oxide powders with single-phase cubic structure are obtained.Moreover,Ce,Pr,Nd,Sm,Y and O uniformly distribute in the grains,indicating that the as-prepared(Ce_(0.2)Pr_(0.2)Nd_(0.2)Sm_(0.2)Y_(0.2))_(2)O_(3) powders have typical characteristics of high-entropy rare earth oxide.
作者
吴鹏程
任剑怡
梁炳亮
艾云龙
杨书伟
刘明忠
张灯辉
吴新根
杨开怀
WU Peng-cheng;REN Jian-yi;LIANG Bing-liang;AI Yun-long;YANG Shu-wei;LIU Ming-zhong;ZHANG Deng-hui;WU Xin-gen;YANG Kai-huai(Key Laboratory for Microstructural Control of Metallic Materials of Jiangxi Province(Nanchang Hangkong University),Nanchang 330063,China;School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China;Jiangxi Kingan Hi-tech CO.,LTD.,Nanchang 330005,China;College of Mechanical and Intelligent Manufacturing,Fujian Chuanzheng Communications College,Fuzhou 350007,China)
出处
《南昌航空大学学报(自然科学版)》
CAS
2023年第4期16-22,38,共8页
Journal of Nanchang Hangkong University(Natural Sciences)
基金
国家自然科学基金(51664043)
江西省金属材料微结构调控重点实验室(南昌航空大学)开放基金(EJ202101423)
南昌航空大学三小项目(2022CL024,2022CL023)
福建省高等职业院校应用技术协同创新中心建设项目(闽教科[2016]71号)。
关键词
高熵稀土氧化物
固相反应法
立方结构
物相组成
显微结构
high-entropy rare earth oxides
solid phase reaction
cubic structure
phase composition
microstructure