Microstructure and thermal properties of nanostructured 8 wt.% CeO 2 doped YSZ coatings prepared by atmospheric plasma spraying

Lei Jin; Qinghe Yu; Liyong Ni; Chungen Zhou

doi:10.1007/s11666-012-9744-3

Microstructure and thermal properties of nanostructured 8 wt.% CeO ₂ doped YSZ coatings prepared by atmospheric plasma spraying

Lei Jin
, Qinghe Yu
, Liyong Ni
, Chungen Zhou^*

^*Corresponding author for this work

School of Materials Science and Engineering

Research output: Contribution to journal › Review article › peer-review

27 Scopus citations

Abstract

Nanostructured 8 wt.% CeO ₂-5.4 wt.% Y ₂O ₃-ZrO ₂ (CeYSZ) coatings were prepared by atmospheric plasma spraying technology. The microstructure, thermal diffusivity, and thermal cycle behavior of CeYSZ were investigated. The results show that the as-sprayed nano-CeYSZ coatings consist of tetragonal ZrO ₂ and Ce element is in solid solution with ZrO ₂. The CeYSZ coatings are characterized by nano-zones (unmelted nanoparticles), melted dense areas, splats, and pores. The thermal diffusivity of nano-CeYSZ coatings is 0.548 × 10 ^-6 m ²/s at room temperature. The addition of CeO ₂ decreases the thermal diffusivity of nano-YSZ coatings, which is mainly caused by the point defect scattering and grain-boundary scattering. The thermal cycle life of nano-CeYSZ coatings is about 860 cycles at 1050 °C. The spallation of the coatings occurs at the interface of CeYSZ/TGO.

Original language	English
Pages (from-to)	928-934
Number of pages	7
Journal	Journal of Thermal Spray Technology
Volume	21
Issue number	5
DOIs	https://doi.org/10.1007/s11666-012-9744-3
State	Published - Sep 2012

Keywords

atmospheric plasma spraying
microstructure
nanostructured CeO -Y O -ZrO coatings
thermal cycling behavior
thermal diffusivity

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10.1007/s11666-012-9744-3

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@article{24241612e3f94f5b81c4a77f68e71316,

title = "Microstructure and thermal properties of nanostructured 8 wt.\% CeO 2 doped YSZ coatings prepared by atmospheric plasma spraying",

abstract = "Nanostructured 8 wt.\% CeO 2-5.4 wt.\% Y 2O 3-ZrO 2 (CeYSZ) coatings were prepared by atmospheric plasma spraying technology. The microstructure, thermal diffusivity, and thermal cycle behavior of CeYSZ were investigated. The results show that the as-sprayed nano-CeYSZ coatings consist of tetragonal ZrO 2 and Ce element is in solid solution with ZrO 2. The CeYSZ coatings are characterized by nano-zones (unmelted nanoparticles), melted dense areas, splats, and pores. The thermal diffusivity of nano-CeYSZ coatings is 0.548 × 10 -6 m 2/s at room temperature. The addition of CeO 2 decreases the thermal diffusivity of nano-YSZ coatings, which is mainly caused by the point defect scattering and grain-boundary scattering. The thermal cycle life of nano-CeYSZ coatings is about 860 cycles at 1050 °C. The spallation of the coatings occurs at the interface of CeYSZ/TGO.",

keywords = "atmospheric plasma spraying, microstructure, nanostructured CeO -Y O -ZrO coatings, thermal cycling behavior, thermal diffusivity",

author = "Lei Jin and Qinghe Yu and Liyong Ni and Chungen Zhou",

year = "2012",

month = sep,

doi = "10.1007/s11666-012-9744-3",

language = "英语",

volume = "21",

pages = "928--934",

journal = "Journal of Thermal Spray Technology",

issn = "1059-9630",

publisher = "Springer New York",

number = "5",

}

TY - JOUR

T1 - Microstructure and thermal properties of nanostructured 8 wt.% CeO 2 doped YSZ coatings prepared by atmospheric plasma spraying

AU - Jin, Lei

AU - Yu, Qinghe

AU - Ni, Liyong

AU - Zhou, Chungen

PY - 2012/9

Y1 - 2012/9

N2 - Nanostructured 8 wt.% CeO 2-5.4 wt.% Y 2O 3-ZrO 2 (CeYSZ) coatings were prepared by atmospheric plasma spraying technology. The microstructure, thermal diffusivity, and thermal cycle behavior of CeYSZ were investigated. The results show that the as-sprayed nano-CeYSZ coatings consist of tetragonal ZrO 2 and Ce element is in solid solution with ZrO 2. The CeYSZ coatings are characterized by nano-zones (unmelted nanoparticles), melted dense areas, splats, and pores. The thermal diffusivity of nano-CeYSZ coatings is 0.548 × 10 -6 m 2/s at room temperature. The addition of CeO 2 decreases the thermal diffusivity of nano-YSZ coatings, which is mainly caused by the point defect scattering and grain-boundary scattering. The thermal cycle life of nano-CeYSZ coatings is about 860 cycles at 1050 °C. The spallation of the coatings occurs at the interface of CeYSZ/TGO.

AB - Nanostructured 8 wt.% CeO 2-5.4 wt.% Y 2O 3-ZrO 2 (CeYSZ) coatings were prepared by atmospheric plasma spraying technology. The microstructure, thermal diffusivity, and thermal cycle behavior of CeYSZ were investigated. The results show that the as-sprayed nano-CeYSZ coatings consist of tetragonal ZrO 2 and Ce element is in solid solution with ZrO 2. The CeYSZ coatings are characterized by nano-zones (unmelted nanoparticles), melted dense areas, splats, and pores. The thermal diffusivity of nano-CeYSZ coatings is 0.548 × 10 -6 m 2/s at room temperature. The addition of CeO 2 decreases the thermal diffusivity of nano-YSZ coatings, which is mainly caused by the point defect scattering and grain-boundary scattering. The thermal cycle life of nano-CeYSZ coatings is about 860 cycles at 1050 °C. The spallation of the coatings occurs at the interface of CeYSZ/TGO.

KW - atmospheric plasma spraying

KW - microstructure

KW - nanostructured CeO -Y O -ZrO coatings

KW - thermal cycling behavior

KW - thermal diffusivity

UR - https://www.scopus.com/pages/publications/84865260635

U2 - 10.1007/s11666-012-9744-3

DO - 10.1007/s11666-012-9744-3

M3 - 文献综述

AN - SCOPUS:84865260635

SN - 1059-9630

VL - 21

SP - 928

EP - 934

JO - Journal of Thermal Spray Technology

JF - Journal of Thermal Spray Technology

IS - 5

ER -

Microstructure and thermal properties of nanostructured 8 wt.% CeO ₂ doped YSZ coatings prepared by atmospheric plasma spraying

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Keywords

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