Synthesis and characterization of high-entropy (La0.2Nd0.2Sm0.2Gd0.2Yb0.2)2(Zr0.75Ce0.25)2O7 nanopowders

Donghui Guo; Feifei Zhou; Baosheng Xu; Yiguang Wang; You Wang

doi:10.1016/j.ceramint.2022.07.207

Synthesis and characterization of high-entropy (La_0.2Nd_0.2Sm_0.2Gd_0.2Yb_0.2)₂(Zr_0.75Ce_0.25)₂O₇ nanopowders

Donghui Guo
, Feifei Zhou^*
, Baosheng Xu^*
, Yiguang Wang
, You Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Developing a novel ceramic nanopowder is essential for thermal-sprayed high-performance nanostructured thermal barrier coatings. Recently, high-entropy rare-earth zirconates have been extensively concerned by researchers. In the present work, we synthesized high-entropy (La_0.2Nd_0.2Sm_0.2Gd_0.2Yb_0.2)₂(Zr_0.75Ce_0.25)₂O₇ (LNSGY) nanopowders by the sol-gel technology. In addition, the LNSGY nanopowders were investigated by X-ray diffraction, Raman spectroscopy and transmission electron microscopy. Results show that LNSGY nanopowders have a typical defective fluorite structure. The average crystalline size of LNSGY nanopowders is approximately 15 nm. Meanwhile, the elemental composition of LNSGY nanopowders presents uniform distribution. This paper lays a foundation for high-performance high-entropy nanostructured feedstocks used for plasma spraying in the future.

Original language	English
Pages (from-to)	32532-32535
Number of pages	4
Journal	Ceramics International
Volume	48
Issue number	21
DOIs	https://doi.org/10.1016/j.ceramint.2022.07.207
Publication status	Published - 1 Nov 2022
Externally published	Yes

Keywords

Defective fluorite structure
High-entropy ceramic
Nanopowders
Rare-earth zirconates
Thermal barrier coatings materials

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10.1016/j.ceramint.2022.07.207

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@article{0c60b36a05ac4160b53f11cea389534a,

title = "Synthesis and characterization of high-entropy (La0.2Nd0.2Sm0.2Gd0.2Yb0.2)2(Zr0.75Ce0.25)2O7 nanopowders",

abstract = "Developing a novel ceramic nanopowder is essential for thermal-sprayed high-performance nanostructured thermal barrier coatings. Recently, high-entropy rare-earth zirconates have been extensively concerned by researchers. In the present work, we synthesized high-entropy (La0.2Nd0.2Sm0.2Gd0.2Yb0.2)2(Zr0.75Ce0.25)2O7 (LNSGY) nanopowders by the sol-gel technology. In addition, the LNSGY nanopowders were investigated by X-ray diffraction, Raman spectroscopy and transmission electron microscopy. Results show that LNSGY nanopowders have a typical defective fluorite structure. The average crystalline size of LNSGY nanopowders is approximately 15 nm. Meanwhile, the elemental composition of LNSGY nanopowders presents uniform distribution. This paper lays a foundation for high-performance high-entropy nanostructured feedstocks used for plasma spraying in the future.",

keywords = "Defective fluorite structure, High-entropy ceramic, Nanopowders, Rare-earth zirconates, Thermal barrier coatings materials",

author = "Donghui Guo and Feifei Zhou and Baosheng Xu and Yiguang Wang and You Wang",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd and Techna Group S.r.l.",

year = "2022",

month = nov,

day = "1",

doi = "10.1016/j.ceramint.2022.07.207",

language = "English",

volume = "48",

pages = "32532--32535",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd.",

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}

TY - JOUR

T1 - Synthesis and characterization of high-entropy (La0.2Nd0.2Sm0.2Gd0.2Yb0.2)2(Zr0.75Ce0.25)2O7 nanopowders

AU - Guo, Donghui

AU - Zhou, Feifei

AU - Xu, Baosheng

AU - Wang, Yiguang

AU - Wang, You

PY - 2022/11/1

Y1 - 2022/11/1

N2 - Developing a novel ceramic nanopowder is essential for thermal-sprayed high-performance nanostructured thermal barrier coatings. Recently, high-entropy rare-earth zirconates have been extensively concerned by researchers. In the present work, we synthesized high-entropy (La0.2Nd0.2Sm0.2Gd0.2Yb0.2)2(Zr0.75Ce0.25)2O7 (LNSGY) nanopowders by the sol-gel technology. In addition, the LNSGY nanopowders were investigated by X-ray diffraction, Raman spectroscopy and transmission electron microscopy. Results show that LNSGY nanopowders have a typical defective fluorite structure. The average crystalline size of LNSGY nanopowders is approximately 15 nm. Meanwhile, the elemental composition of LNSGY nanopowders presents uniform distribution. This paper lays a foundation for high-performance high-entropy nanostructured feedstocks used for plasma spraying in the future.

AB - Developing a novel ceramic nanopowder is essential for thermal-sprayed high-performance nanostructured thermal barrier coatings. Recently, high-entropy rare-earth zirconates have been extensively concerned by researchers. In the present work, we synthesized high-entropy (La0.2Nd0.2Sm0.2Gd0.2Yb0.2)2(Zr0.75Ce0.25)2O7 (LNSGY) nanopowders by the sol-gel technology. In addition, the LNSGY nanopowders were investigated by X-ray diffraction, Raman spectroscopy and transmission electron microscopy. Results show that LNSGY nanopowders have a typical defective fluorite structure. The average crystalline size of LNSGY nanopowders is approximately 15 nm. Meanwhile, the elemental composition of LNSGY nanopowders presents uniform distribution. This paper lays a foundation for high-performance high-entropy nanostructured feedstocks used for plasma spraying in the future.

KW - Defective fluorite structure

KW - High-entropy ceramic

KW - Nanopowders

KW - Rare-earth zirconates

KW - Thermal barrier coatings materials

UR - https://www.scopus.com/pages/publications/85135525715

U2 - 10.1016/j.ceramint.2022.07.207

DO - 10.1016/j.ceramint.2022.07.207

M3 - Article

AN - SCOPUS:85135525715

SN - 0272-8842

VL - 48

SP - 32532

EP - 32535

JO - Ceramics International

JF - Ceramics International

IS - 21

ER -

Synthesis and characterization of high-entropy (La_0.2Nd_0.2Sm_0.2Gd_0.2Yb_0.2)₂(Zr_0.75Ce_0.25)₂O₇ nanopowders

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