Interfacial failure induced by dynamic evolutional stress of NiCoCrAlY-4YSZ TBCs during gradient thermal cycling: Effect of 4YSZ top coat thickness

Chuntang Yu; Lei Zhang; Zebin Bao; Min Feng; Luoyi Zou; Jianjun Pan; Shuai Li; Guozheng Quan; Shenglong Zhu; Fuhui Wang

doi:10.1016/j.surfcoat.2024.130408

Interfacial failure induced by dynamic evolutional stress of NiCoCrAlY-4YSZ TBCs during gradient thermal cycling: Effect of 4YSZ top coat thickness

Chuntang Yu
, Lei Zhang
, Zebin Bao^*
, Min Feng^*
, Luoyi Zou
, Jianjun Pan
, Shuai Li
, Guozheng Quan
, Shenglong Zhu
, Fuhui Wang

^*Corresponding author for this work

Chongqing Institute of Technology
CAS - Institute of Metal Research
University of Chinese Academy of Sciences
CAS - Shanghai Institute of Ceramics
Chongqing University
Northeastern University China

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

1 Scopus citations

Abstract

As the continuation of the previous work, the dynamic evolution of stress field of NiCoCrAlY-4YSZ TBCs with the top coat thickness of 100 and 200 μm at 1000 cycle is constructed based on the real interfacial morphologies of the TC/BC. Results indicated that interfacial stress usually exhibits higher value at the heating stage than cooling stage, which is completely different from the previous results during isothermal cyclic oxidation. Furthermore, the formed (Ni,Co)(Cr,Al)₂O₄ spinel oxide is unable to promote the high stress level at the TC/BC interface. The relationship between the stress state and formed (Ni,Co)(Cr,Al)₂O₄ spinel oxide as well as relative roughness was discussed.

Original language	English
Article number	130408
Journal	Surface and Coatings Technology
Volume	477
DOIs	https://doi.org/10.1016/j.surfcoat.2024.130408
State	Published - 15 Feb 2024
Externally published	Yes

Keywords

FEM
Gradient thermal cycling
Interfacial failure
Thermal barrier coatings (TBCs)
Thermal grown oxide (TGO)

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10.1016/j.surfcoat.2024.130408

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title = "Interfacial failure induced by dynamic evolutional stress of NiCoCrAlY-4YSZ TBCs during gradient thermal cycling: Effect of 4YSZ top coat thickness",

abstract = "As the continuation of the previous work, the dynamic evolution of stress field of NiCoCrAlY-4YSZ TBCs with the top coat thickness of 100 and 200 μm at 1000 cycle is constructed based on the real interfacial morphologies of the TC/BC. Results indicated that interfacial stress usually exhibits higher value at the heating stage than cooling stage, which is completely different from the previous results during isothermal cyclic oxidation. Furthermore, the formed (Ni,Co)(Cr,Al)2O4 spinel oxide is unable to promote the high stress level at the TC/BC interface. The relationship between the stress state and formed (Ni,Co)(Cr,Al)2O4 spinel oxide as well as relative roughness was discussed.",

keywords = "FEM, Gradient thermal cycling, Interfacial failure, Thermal barrier coatings (TBCs), Thermal grown oxide (TGO)",

author = "Chuntang Yu and Lei Zhang and Zebin Bao and Min Feng and Luoyi Zou and Jianjun Pan and Shuai Li and Guozheng Quan and Shenglong Zhu and Fuhui Wang",

note = "Publisher Copyright: {\textcopyright} 2024",

year = "2024",

month = feb,

day = "15",

doi = "10.1016/j.surfcoat.2024.130408",

language = "英语",

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journal = "Surface and Coatings Technology",

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TY - JOUR

T1 - Interfacial failure induced by dynamic evolutional stress of NiCoCrAlY-4YSZ TBCs during gradient thermal cycling

T2 - Effect of 4YSZ top coat thickness

AU - Yu, Chuntang

AU - Zhang, Lei

AU - Bao, Zebin

AU - Feng, Min

AU - Zou, Luoyi

AU - Pan, Jianjun

AU - Li, Shuai

AU - Quan, Guozheng

AU - Zhu, Shenglong

AU - Wang, Fuhui

PY - 2024/2/15

Y1 - 2024/2/15

N2 - As the continuation of the previous work, the dynamic evolution of stress field of NiCoCrAlY-4YSZ TBCs with the top coat thickness of 100 and 200 μm at 1000 cycle is constructed based on the real interfacial morphologies of the TC/BC. Results indicated that interfacial stress usually exhibits higher value at the heating stage than cooling stage, which is completely different from the previous results during isothermal cyclic oxidation. Furthermore, the formed (Ni,Co)(Cr,Al)2O4 spinel oxide is unable to promote the high stress level at the TC/BC interface. The relationship between the stress state and formed (Ni,Co)(Cr,Al)2O4 spinel oxide as well as relative roughness was discussed.

AB - As the continuation of the previous work, the dynamic evolution of stress field of NiCoCrAlY-4YSZ TBCs with the top coat thickness of 100 and 200 μm at 1000 cycle is constructed based on the real interfacial morphologies of the TC/BC. Results indicated that interfacial stress usually exhibits higher value at the heating stage than cooling stage, which is completely different from the previous results during isothermal cyclic oxidation. Furthermore, the formed (Ni,Co)(Cr,Al)2O4 spinel oxide is unable to promote the high stress level at the TC/BC interface. The relationship between the stress state and formed (Ni,Co)(Cr,Al)2O4 spinel oxide as well as relative roughness was discussed.

KW - FEM

KW - Gradient thermal cycling

KW - Interfacial failure

KW - Thermal barrier coatings (TBCs)

KW - Thermal grown oxide (TGO)

UR - https://www.scopus.com/pages/publications/85182509983

U2 - 10.1016/j.surfcoat.2024.130408

DO - 10.1016/j.surfcoat.2024.130408

M3 - 文章

AN - SCOPUS:85182509983

SN - 0257-8972

VL - 477

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

M1 - 130408

ER -

Interfacial failure induced by dynamic evolutional stress of NiCoCrAlY-4YSZ TBCs during gradient thermal cycling: Effect of 4YSZ top coat thickness

Abstract

Keywords

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