Synthesis of the superfine high-entropy zirconate nanopowders by polymerized complex method

• 作者: Yangjie HAN Renwang YU Honghua LIU Yanhui CHU
• 来源期刊: 先进陶瓷（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: Research Article
• 页码范围: 136-144
• 页数: 9页
• 语种: 英文

摘要

The high-purity and superfine high-entropy zirconate nanopowders,namely(Y0.25La0.25Sm0.25Eu0.25)2Zr2O7 nanopowders,without agglomeration,were successfully synthesized via polymerized complex method at low temperatures for the first time.The results showed that the crystallinity degree,lattice strain,and particle size of the as-synthesized powders were gradually enhanced with the increase of the synthesis temperature from 800 to 1300℃.The as-synthesized powders involved fluorite phase in the range of 800-1200℃while they underwent the phase evolution from fluorite to pyrochlore at 1300℃.It is worth mentioning that the as-synthesized powders at 900℃are of the highest quality among all the as-synthesized powders,which is due to the fact that they not only possess the particle size of 11 nm without agglomeration,but also show high purity and good compositional uniformity.