Thermal cyclic life and failure mechanism of nanostructured 13 wt%Al 2O 3 doped YSZ coating prepared by atmospheric plasma spraying

Lei Jin; Liyong Ni; Qinghe Yu; Abdul Rauf; Chungen Zhou

doi:10.1016/j.ceramint.2011.11.077

Thermal cyclic life and failure mechanism of nanostructured 13 wt%Al ₂O ₃ doped YSZ coating prepared by atmospheric plasma spraying

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

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

28 Scopus citations

Abstract

Nanostructured 13 wt%Al ₂O ₃ doped nanostructured 8 wt% yttria stabilized zirconia (nano-13AlYSZ) coatings were deposited by atmospheric plasma spray (APS). The isothermal oxidation and thermal cyclic life of the nano-13AlYSZ coating at 1100 °C were investigated. The isothermal oxidation test results indicate that the oxidation kinetics of nano-13AlYSZ follows a parabolic law. The parabolic rate constant at 1100 °C is calculated 0.04365 mg ² cm ^-4 h ^-1. The thermal cyclic life of nano-13AlYSZ coating is about 953 times at 1100 °C. The failure of the nano-13AlYSZ coating occurs at the interface between the nano-13AlYSZ coating and the thermal growth oxide (TGO). A finite element method is employed to analyze the stress distribution in the nano-13AlYSZ coating. The results show that maximum stresses occur at the top coat/TGO interface.

Original language	English
Pages (from-to)	2983-2989
Number of pages	7
Journal	Ceramics International
Volume	38
Issue number	4
DOIs	https://doi.org/10.1016/j.ceramint.2011.11.077
State	Published - May 2012

Keywords

Atmospheric plasma spraying
Finite element method
Nanostructured Al O -Y O -ZrO
Thermal cyclic life

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10.1016/j.ceramint.2011.11.077

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@article{7d36204ccbc94771a3448c6173888631,

title = "Thermal cyclic life and failure mechanism of nanostructured 13 wt\%Al 2O 3 doped YSZ coating prepared by atmospheric plasma spraying",

abstract = "Nanostructured 13 wt\%Al 2O 3 doped nanostructured 8 wt\% yttria stabilized zirconia (nano-13AlYSZ) coatings were deposited by atmospheric plasma spray (APS). The isothermal oxidation and thermal cyclic life of the nano-13AlYSZ coating at 1100 °C were investigated. The isothermal oxidation test results indicate that the oxidation kinetics of nano-13AlYSZ follows a parabolic law. The parabolic rate constant at 1100 °C is calculated 0.04365 mg 2 cm -4 h -1. The thermal cyclic life of nano-13AlYSZ coating is about 953 times at 1100 °C. The failure of the nano-13AlYSZ coating occurs at the interface between the nano-13AlYSZ coating and the thermal growth oxide (TGO). A finite element method is employed to analyze the stress distribution in the nano-13AlYSZ coating. The results show that maximum stresses occur at the top coat/TGO interface.",

keywords = "Atmospheric plasma spraying, Finite element method, Nanostructured Al O -Y O -ZrO, Thermal cyclic life",

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

year = "2012",

month = may,

doi = "10.1016/j.ceramint.2011.11.077",

language = "英语",

volume = "38",

pages = "2983--2989",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd",

number = "4",

}

TY - JOUR

T1 - Thermal cyclic life and failure mechanism of nanostructured 13 wt%Al 2O 3 doped YSZ coating prepared by atmospheric plasma spraying

AU - Jin, Lei

AU - Ni, Liyong

AU - Yu, Qinghe

AU - Rauf, Abdul

AU - Zhou, Chungen

PY - 2012/5

Y1 - 2012/5

N2 - Nanostructured 13 wt%Al 2O 3 doped nanostructured 8 wt% yttria stabilized zirconia (nano-13AlYSZ) coatings were deposited by atmospheric plasma spray (APS). The isothermal oxidation and thermal cyclic life of the nano-13AlYSZ coating at 1100 °C were investigated. The isothermal oxidation test results indicate that the oxidation kinetics of nano-13AlYSZ follows a parabolic law. The parabolic rate constant at 1100 °C is calculated 0.04365 mg 2 cm -4 h -1. The thermal cyclic life of nano-13AlYSZ coating is about 953 times at 1100 °C. The failure of the nano-13AlYSZ coating occurs at the interface between the nano-13AlYSZ coating and the thermal growth oxide (TGO). A finite element method is employed to analyze the stress distribution in the nano-13AlYSZ coating. The results show that maximum stresses occur at the top coat/TGO interface.

AB - Nanostructured 13 wt%Al 2O 3 doped nanostructured 8 wt% yttria stabilized zirconia (nano-13AlYSZ) coatings were deposited by atmospheric plasma spray (APS). The isothermal oxidation and thermal cyclic life of the nano-13AlYSZ coating at 1100 °C were investigated. The isothermal oxidation test results indicate that the oxidation kinetics of nano-13AlYSZ follows a parabolic law. The parabolic rate constant at 1100 °C is calculated 0.04365 mg 2 cm -4 h -1. The thermal cyclic life of nano-13AlYSZ coating is about 953 times at 1100 °C. The failure of the nano-13AlYSZ coating occurs at the interface between the nano-13AlYSZ coating and the thermal growth oxide (TGO). A finite element method is employed to analyze the stress distribution in the nano-13AlYSZ coating. The results show that maximum stresses occur at the top coat/TGO interface.

KW - Atmospheric plasma spraying

KW - Finite element method

KW - Nanostructured Al O -Y O -ZrO

KW - Thermal cyclic life

UR - https://www.scopus.com/pages/publications/84858071183

U2 - 10.1016/j.ceramint.2011.11.077

DO - 10.1016/j.ceramint.2011.11.077

M3 - 文章

AN - SCOPUS:84858071183

SN - 0272-8842

VL - 38

SP - 2983

EP - 2989

JO - Ceramics International

JF - Ceramics International

IS - 4

ER -

Thermal cyclic life and failure mechanism of nanostructured 13 wt%Al ₂O ₃ doped YSZ coating prepared by atmospheric plasma spraying

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Keywords

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