Lifetime prediction of plasma-sprayed thermal barrier coating systems

Shen Wei; Wang Fu-chi; Fan Qun-bo; Ma Zhuang

doi:10.1016/j.surfcoat.2012.11.069

Lifetime prediction of plasma-sprayed thermal barrier coating systems

Shen Wei, Wang Fu-chi, Fan Qun-bo^*, Ma Zhuang

^*Corresponding author for this work

School of Material Science and Engineering

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

31 Citations (Scopus)

Abstract

Relying on the statistical treatment of the morphological characteristics of the interface between yttria stabilized zicronia (YSZ) top coat (TC) and metallic bond coat (BC), finite element model of thermal barrier coating (TBC) is generated by a sinusoidal function. Meanwhile, considering the thermally grown oxide (TGO) growth, creep effects and top coating sintering, lifetime prediction methodology is proposed. Furthermore, stress development during thermal cycling is calculated by finite element method (FEM). Comparing the numerically predicted TBC stresses with the failure stress of top coating, the lifetime of plasma-sprayed (PS) TBC is predicted between 810 and 900. cycles, in agreement with experimental result of about 860. cycles, the average data of 8 specimen lifetimes. Different factors to the failure of TBC are compared.

Original language	English
Pages (from-to)	39-45
Number of pages	7
Journal	Surface and Coatings Technology
Volume	217
DOIs	https://doi.org/10.1016/j.surfcoat.2012.11.069
Publication status	Published - 25 Feb 2013

Keywords

FEM
Lifetime prediction
TBC
TGO

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10.1016/j.surfcoat.2012.11.069

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title = "Lifetime prediction of plasma-sprayed thermal barrier coating systems",

abstract = "Relying on the statistical treatment of the morphological characteristics of the interface between yttria stabilized zicronia (YSZ) top coat (TC) and metallic bond coat (BC), finite element model of thermal barrier coating (TBC) is generated by a sinusoidal function. Meanwhile, considering the thermally grown oxide (TGO) growth, creep effects and top coating sintering, lifetime prediction methodology is proposed. Furthermore, stress development during thermal cycling is calculated by finite element method (FEM). Comparing the numerically predicted TBC stresses with the failure stress of top coating, the lifetime of plasma-sprayed (PS) TBC is predicted between 810 and 900. cycles, in agreement with experimental result of about 860. cycles, the average data of 8 specimen lifetimes. Different factors to the failure of TBC are compared.",

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T1 - Lifetime prediction of plasma-sprayed thermal barrier coating systems

AU - Wei, Shen

AU - Fu-chi, Wang

AU - Qun-bo, Fan

AU - Zhuang, Ma

PY - 2013/2/25

Y1 - 2013/2/25

N2 - Relying on the statistical treatment of the morphological characteristics of the interface between yttria stabilized zicronia (YSZ) top coat (TC) and metallic bond coat (BC), finite element model of thermal barrier coating (TBC) is generated by a sinusoidal function. Meanwhile, considering the thermally grown oxide (TGO) growth, creep effects and top coating sintering, lifetime prediction methodology is proposed. Furthermore, stress development during thermal cycling is calculated by finite element method (FEM). Comparing the numerically predicted TBC stresses with the failure stress of top coating, the lifetime of plasma-sprayed (PS) TBC is predicted between 810 and 900. cycles, in agreement with experimental result of about 860. cycles, the average data of 8 specimen lifetimes. Different factors to the failure of TBC are compared.

AB - Relying on the statistical treatment of the morphological characteristics of the interface between yttria stabilized zicronia (YSZ) top coat (TC) and metallic bond coat (BC), finite element model of thermal barrier coating (TBC) is generated by a sinusoidal function. Meanwhile, considering the thermally grown oxide (TGO) growth, creep effects and top coating sintering, lifetime prediction methodology is proposed. Furthermore, stress development during thermal cycling is calculated by finite element method (FEM). Comparing the numerically predicted TBC stresses with the failure stress of top coating, the lifetime of plasma-sprayed (PS) TBC is predicted between 810 and 900. cycles, in agreement with experimental result of about 860. cycles, the average data of 8 specimen lifetimes. Different factors to the failure of TBC are compared.

KW - FEM

KW - Lifetime prediction

KW - TBC

KW - TGO

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DO - 10.1016/j.surfcoat.2012.11.069

M3 - Article

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SN - 0257-8972

VL - 217

SP - 39

EP - 45

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

ER -

Lifetime prediction of plasma-sprayed thermal barrier coating systems

Abstract

Keywords

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