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

The high-purity and superfine high-entropy zirconate nanopowders, namely (Y 0.25 La 0.25 Sm 0.25 Eu 0.25 ) 2 Zr 2 O 7 nanopowders, without agglomeration, were successfully synthesized via polymerized complex method at low temperatures for the first time. The results showed that the crystallinity deg...

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Bibliographic Details
Published in:Journal of advanced ceramics 2022-01, Vol.11 (1), p.136-144
Main Authors: Han, Yangjie, Yu, Renwang, Liu, Honghua, Chu, Yanhui
Format: Article
Language:English
Subjects:
Agglomeration
Analysis
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Entropy
Fluorine compounds
Fluorite
Glass
high-entropy oxides
Lattice strain
Low temperature
Materials Science
Methods
nanopowders
Nanotechnology
Natural Materials
Particle size
Polymerization
polymerized complex method
Powders
Purity
Research Article
Structural Materials
Ultrafines
zirconates
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Summary:The high-purity and superfine high-entropy zirconate nanopowders, namely (Y 0.25 La 0.25 Sm 0.25 Eu 0.25 ) 2 Zr 2 O 7 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 °C. The as-synthesized powders involved fluorite phase in the range of 800–1200 °C while they underwent the phase evolution from fluorite to pyrochlore at 1300 °C. It is worth mentioning that the as-synthesized powders at 900 °C 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.
ISSN:2226-4108
2227-8508
DOI:10.1007/s40145-021-0522-x