Thermo-physical properties and thermal shock resistance of segmented La 2Ce 2O 7/YSZ thermal barrier coatings

Hongbo Guo; Yi Wang; Lu Wang; Shengkai Gong

doi:10.1007/s11666-009-9350-1

Thermo-physical properties and thermal shock resistance of segmented La ₂Ce ₂O ₇/YSZ thermal barrier coatings

Hongbo Guo^*
, Yi Wang
, Lu Wang
, Shengkai Gong

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

67 Scopus citations

Abstract

La ₂Ce ₂O ₇ (LCO)/yttria-stabilized zirconia (YSZ) thermal barrier coating (TBC) with segmentation crack structure was produced by atmospheric plasma spraying. Thermo-physical properties, such as thermal diffusivities and thermal conductivities, and thermal cycling performance of the segmented LCO/YSZ TBC were investigated. The thermal conductivity of the segmented coating was measured to be around 1.02 W/mK at 1200 °C, relatively lower than that of the non-segmented coating, respectively. The segmented LCO/YSZ TBC exhibited a thermal cycling lifetime of around 2100 cycles, improving the durability by nearly 50% as compared to the non-segmented TBC. The failure of the segmented coating occurred by chipping spallation and delamination cracking within the coating.

Original language	English
Pages (from-to)	665-671
Number of pages	7
Journal	Journal of Thermal Spray Technology
Volume	18
Issue number	4
DOIs	https://doi.org/10.1007/s11666-009-9350-1
State	Published - Dec 2009

Keywords

La Ce O (LCO)
Segmentation cracks
Thermal barrier coatings (TBCs)
Thermal shock
Thermo-physical properties

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10.1007/s11666-009-9350-1

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@article{dde019ec9ade437aa18362b46771ed08,

title = "Thermo-physical properties and thermal shock resistance of segmented La 2Ce 2O 7/YSZ thermal barrier coatings",

abstract = "La 2Ce 2O 7 (LCO)/yttria-stabilized zirconia (YSZ) thermal barrier coating (TBC) with segmentation crack structure was produced by atmospheric plasma spraying. Thermo-physical properties, such as thermal diffusivities and thermal conductivities, and thermal cycling performance of the segmented LCO/YSZ TBC were investigated. The thermal conductivity of the segmented coating was measured to be around 1.02 W/mK at 1200 °C, relatively lower than that of the non-segmented coating, respectively. The segmented LCO/YSZ TBC exhibited a thermal cycling lifetime of around 2100 cycles, improving the durability by nearly 50\% as compared to the non-segmented TBC. The failure of the segmented coating occurred by chipping spallation and delamination cracking within the coating.",

keywords = "La Ce O (LCO), Segmentation cracks, Thermal barrier coatings (TBCs), Thermal shock, Thermo-physical properties",

author = "Hongbo Guo and Yi Wang and Lu Wang and Shengkai Gong",

year = "2009",

month = dec,

doi = "10.1007/s11666-009-9350-1",

language = "英语",

volume = "18",

pages = "665--671",

journal = "Journal of Thermal Spray Technology",

issn = "1059-9630",

publisher = "Springer New York",

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}

TY - JOUR

T1 - Thermo-physical properties and thermal shock resistance of segmented La 2Ce 2O 7/YSZ thermal barrier coatings

AU - Guo, Hongbo

AU - Wang, Yi

AU - Wang, Lu

AU - Gong, Shengkai

PY - 2009/12

Y1 - 2009/12

N2 - La 2Ce 2O 7 (LCO)/yttria-stabilized zirconia (YSZ) thermal barrier coating (TBC) with segmentation crack structure was produced by atmospheric plasma spraying. Thermo-physical properties, such as thermal diffusivities and thermal conductivities, and thermal cycling performance of the segmented LCO/YSZ TBC were investigated. The thermal conductivity of the segmented coating was measured to be around 1.02 W/mK at 1200 °C, relatively lower than that of the non-segmented coating, respectively. The segmented LCO/YSZ TBC exhibited a thermal cycling lifetime of around 2100 cycles, improving the durability by nearly 50% as compared to the non-segmented TBC. The failure of the segmented coating occurred by chipping spallation and delamination cracking within the coating.

AB - La 2Ce 2O 7 (LCO)/yttria-stabilized zirconia (YSZ) thermal barrier coating (TBC) with segmentation crack structure was produced by atmospheric plasma spraying. Thermo-physical properties, such as thermal diffusivities and thermal conductivities, and thermal cycling performance of the segmented LCO/YSZ TBC were investigated. The thermal conductivity of the segmented coating was measured to be around 1.02 W/mK at 1200 °C, relatively lower than that of the non-segmented coating, respectively. The segmented LCO/YSZ TBC exhibited a thermal cycling lifetime of around 2100 cycles, improving the durability by nearly 50% as compared to the non-segmented TBC. The failure of the segmented coating occurred by chipping spallation and delamination cracking within the coating.

KW - La Ce O (LCO)

KW - Segmentation cracks

KW - Thermal barrier coatings (TBCs)

KW - Thermal shock

KW - Thermo-physical properties

UR - https://www.scopus.com/pages/publications/70450253270

U2 - 10.1007/s11666-009-9350-1

DO - 10.1007/s11666-009-9350-1

M3 - 文献综述

AN - SCOPUS:70450253270

SN - 1059-9630

VL - 18

SP - 665

EP - 671

JO - Journal of Thermal Spray Technology

JF - Journal of Thermal Spray Technology

IS - 4

ER -

Thermo-physical properties and thermal shock resistance of segmented La ₂Ce ₂O ₇/YSZ thermal barrier coatings

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Keywords

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