Preparation and characterization of a novel nanostructured Yb2Si2O7 feedstock used for plasma-sprayed environmental barrier coatings

Binxin Li; Xiaodong Zhang; Zhenguo Zhang; Luwei Deng; Qian Li; Feifei Zhou; Baosheng Xu; Jin Hu; You Wang

doi:10.1016/j.ceramint.2022.11.283

Preparation and characterization of a novel nanostructured Yb₂Si₂O₇ feedstock used for plasma-sprayed environmental barrier coatings

Binxin Li, Xiaodong Zhang^*, Zhenguo Zhang, Luwei Deng, Qian Li, Feifei Zhou^*, Baosheng Xu, Jin Hu, You Wang^*

^*Corresponding author for this work

Institute of Advanced Structure Technology

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

7 Citations (Scopus)

Abstract

In this work, the preparation process of a novel nanostructured Yb₂Si₂O₇ feedstock for plasma-sprayed environmental barrier coatings (EBCs) was explored. Results show that sintering parameter and mass ratio between Yb₂O₃ and SiO₂ significantly affect the solid-state reaction process for the synthesis of Yb₂Si₂O₇ feedstocks. The increase of SiO₂/Yb₂O₃ ratio in the spray-dried granules can reduce the average grain size of β-Yb₂Si₂O₇ phase and the second phase content of the sintered powder. Nanostructured Yb₂Si₂O₇ feedstocks with high content of β-Yb₂Si₂O₇ phase and good sprayability were successfully obtained after plasma treatment. The nanostructured Yb₂Si₂O₇ coatings can be gained using as-synthesized feedstocks via plasma spraying, which verifies the applicability of nanostructured Yb₂Si₂O₇ feedstocks.

Original language	English
Pages (from-to)	10897-10905
Number of pages	9
Journal	Ceramics International
Volume	49
Issue number	7
DOIs	https://doi.org/10.1016/j.ceramint.2022.11.283
Publication status	Published - 1 Apr 2023

Keywords

Environmental barrier coatings
Nanostructured feedstock
Plasma spraying
Solid-state synthesis
YbSiO

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10.1016/j.ceramint.2022.11.283

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title = "Preparation and characterization of a novel nanostructured Yb2Si2O7 feedstock used for plasma-sprayed environmental barrier coatings",

abstract = "In this work, the preparation process of a novel nanostructured Yb2Si2O7 feedstock for plasma-sprayed environmental barrier coatings (EBCs) was explored. Results show that sintering parameter and mass ratio between Yb2O3 and SiO2 significantly affect the solid-state reaction process for the synthesis of Yb2Si2O7 feedstocks. The increase of SiO2/Yb2O3 ratio in the spray-dried granules can reduce the average grain size of β-Yb2Si2O7 phase and the second phase content of the sintered powder. Nanostructured Yb2Si2O7 feedstocks with high content of β-Yb2Si2O7 phase and good sprayability were successfully obtained after plasma treatment. The nanostructured Yb2Si2O7 coatings can be gained using as-synthesized feedstocks via plasma spraying, which verifies the applicability of nanostructured Yb2Si2O7 feedstocks.",

keywords = "Environmental barrier coatings, Nanostructured feedstock, Plasma spraying, Solid-state synthesis, YbSiO",

author = "Binxin Li and Xiaodong Zhang and Zhenguo Zhang and Luwei Deng and Qian Li and Feifei Zhou and Baosheng Xu and Jin Hu and You Wang",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2023",

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doi = "10.1016/j.ceramint.2022.11.283",

language = "English",

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AU - Li, Binxin

AU - Zhang, Xiaodong

AU - Zhang, Zhenguo

AU - Deng, Luwei

AU - Li, Qian

AU - Zhou, Feifei

AU - Xu, Baosheng

AU - Hu, Jin

AU - Wang, You

PY - 2023/4/1

Y1 - 2023/4/1

N2 - In this work, the preparation process of a novel nanostructured Yb2Si2O7 feedstock for plasma-sprayed environmental barrier coatings (EBCs) was explored. Results show that sintering parameter and mass ratio between Yb2O3 and SiO2 significantly affect the solid-state reaction process for the synthesis of Yb2Si2O7 feedstocks. The increase of SiO2/Yb2O3 ratio in the spray-dried granules can reduce the average grain size of β-Yb2Si2O7 phase and the second phase content of the sintered powder. Nanostructured Yb2Si2O7 feedstocks with high content of β-Yb2Si2O7 phase and good sprayability were successfully obtained after plasma treatment. The nanostructured Yb2Si2O7 coatings can be gained using as-synthesized feedstocks via plasma spraying, which verifies the applicability of nanostructured Yb2Si2O7 feedstocks.

AB - In this work, the preparation process of a novel nanostructured Yb2Si2O7 feedstock for plasma-sprayed environmental barrier coatings (EBCs) was explored. Results show that sintering parameter and mass ratio between Yb2O3 and SiO2 significantly affect the solid-state reaction process for the synthesis of Yb2Si2O7 feedstocks. The increase of SiO2/Yb2O3 ratio in the spray-dried granules can reduce the average grain size of β-Yb2Si2O7 phase and the second phase content of the sintered powder. Nanostructured Yb2Si2O7 feedstocks with high content of β-Yb2Si2O7 phase and good sprayability were successfully obtained after plasma treatment. The nanostructured Yb2Si2O7 coatings can be gained using as-synthesized feedstocks via plasma spraying, which verifies the applicability of nanostructured Yb2Si2O7 feedstocks.

KW - Environmental barrier coatings

KW - Nanostructured feedstock

KW - Plasma spraying

KW - Solid-state synthesis

KW - YbSiO

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VL - 49

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JO - Ceramics International

JF - Ceramics International

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ER -

Preparation and characterization of a novel nanostructured Yb₂Si₂O₇ feedstock used for plasma-sprayed environmental barrier coatings

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