Uneven growth of thermally grown oxide and stress distribution in plasma-sprayed thermal barrier coatings

C. Che; G. Q. Wu; H. Y. Qi; Z. Huang; X. G. Yang

doi:10.1016/j.surfcoat.2009.03.031

Uneven growth of thermally grown oxide and stress distribution in plasma-sprayed thermal barrier coatings

C. Che
, G. Q. Wu^*
, H. Y. Qi
, Z. Huang
, X. G. Yang

^*Corresponding author for this work

Beihang University

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

40 Scopus citations

Abstract

After isothermal exposure at 1050 °C, uneven growth of thermally grown oxide (TGO) was observed at peak and valley positions of rough top coat/TGO interface. A statistical, quantitative analysis on uneven TGO and its evolution with oxidation time were presented. The stress states in the vicinity of uneven TGO were investigated using a finite element (FE) method. The results show that the TGO at peak and valley locations obeys exponential growth. The TGO is thicker at peaks than at valleys. A significant difference in the stress distribution exists for even and uneven TGO.

Original language	English
Pages (from-to)	3088-3091
Number of pages	4
Journal	Surface and Coatings Technology
Volume	203
Issue number	20-21
DOIs	https://doi.org/10.1016/j.surfcoat.2009.03.031
State	Published - 15 Jul 2009

Keywords

Plasma spraying
Thermal barrier coating
Thermally grown oxide

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10.1016/j.surfcoat.2009.03.031

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@article{997eea80098c4b3790f7e56692a88695,

title = "Uneven growth of thermally grown oxide and stress distribution in plasma-sprayed thermal barrier coatings",

abstract = "After isothermal exposure at 1050 °C, uneven growth of thermally grown oxide (TGO) was observed at peak and valley positions of rough top coat/TGO interface. A statistical, quantitative analysis on uneven TGO and its evolution with oxidation time were presented. The stress states in the vicinity of uneven TGO were investigated using a finite element (FE) method. The results show that the TGO at peak and valley locations obeys exponential growth. The TGO is thicker at peaks than at valleys. A significant difference in the stress distribution exists for even and uneven TGO.",

keywords = "Plasma spraying, Thermal barrier coating, Thermally grown oxide",

author = "C. Che and Wu, \{G. Q.\} and Qi, \{H. Y.\} and Z. Huang and Yang, \{X. G.\}",

year = "2009",

month = jul,

day = "15",

doi = "10.1016/j.surfcoat.2009.03.031",

language = "英语",

volume = "203",

pages = "3088--3091",

journal = "Surface and Coatings Technology",

issn = "0257-8972",

publisher = "Elsevier B.V.",

number = "20-21",

}

TY - JOUR

T1 - Uneven growth of thermally grown oxide and stress distribution in plasma-sprayed thermal barrier coatings

AU - Che, C.

AU - Wu, G. Q.

AU - Qi, H. Y.

AU - Huang, Z.

AU - Yang, X. G.

PY - 2009/7/15

Y1 - 2009/7/15

N2 - After isothermal exposure at 1050 °C, uneven growth of thermally grown oxide (TGO) was observed at peak and valley positions of rough top coat/TGO interface. A statistical, quantitative analysis on uneven TGO and its evolution with oxidation time were presented. The stress states in the vicinity of uneven TGO were investigated using a finite element (FE) method. The results show that the TGO at peak and valley locations obeys exponential growth. The TGO is thicker at peaks than at valleys. A significant difference in the stress distribution exists for even and uneven TGO.

AB - After isothermal exposure at 1050 °C, uneven growth of thermally grown oxide (TGO) was observed at peak and valley positions of rough top coat/TGO interface. A statistical, quantitative analysis on uneven TGO and its evolution with oxidation time were presented. The stress states in the vicinity of uneven TGO were investigated using a finite element (FE) method. The results show that the TGO at peak and valley locations obeys exponential growth. The TGO is thicker at peaks than at valleys. A significant difference in the stress distribution exists for even and uneven TGO.

KW - Plasma spraying

KW - Thermal barrier coating

KW - Thermally grown oxide

UR - https://www.scopus.com/pages/publications/67349187936

U2 - 10.1016/j.surfcoat.2009.03.031

DO - 10.1016/j.surfcoat.2009.03.031

M3 - 文章

AN - SCOPUS:67349187936

SN - 0257-8972

VL - 203

SP - 3088

EP - 3091

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 20-21

ER -

Uneven growth of thermally grown oxide and stress distribution in plasma-sprayed thermal barrier coatings

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Keywords

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