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HomeMaterials Science ForumMaterials Science Forum Vols. 546-549Numerical Analysis of EB-PVD Thermal Barrier...

Numerical Analysis of EB-PVD Thermal Barrier Coatings under Thermal-Mechanical Coupled Environment

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Abstract:

Numerical method was used to simulate the stress state of thermal barrier coatings (TBCs) under thermal-mechanical coupled environment. The finite element (FE) model was built as hollow tube and boundary conditions including heating rate, cooling air convection and mechanical loadings were considered. The maximum stress locates where maximum temperature gradients is formed. This failure mode is consistent with the experimental results.

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Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Pages:

1795-1799

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.546-549.1795

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Online since:

May 2007

Authors:

Hui Peng, Hong Bo Guo, Chun Xia Zhang, Sheng Kai Gong

Keywords:

EB-PVD, Failure, Finite Element, Stress, Thermal Barrier Coating (TBC)

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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[7] -1. 0x10.

[7] -5. 0x10.

[6] 0. 0 5. 0x10.

[6] 1. 0x10.

[7] (a) Substrate/BC 5s 10s 20s 40s 70s 102. 5s 105s 110s 120s σxy (Pa) y (mm).

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[7] -1. 0x10.

[7] -5. 0x10.

[6] 0. 0 5. 0x10.

[6] 1. 0x10.

[7] 1. 5x10.

[7] 2. 0x10.

[7] (b) BC/TGO 5s 10s 20s 40s 70s 102. 5s 105s 110s 120s σxy (Pa) y (mm).

2 4 6 8 10 -5. 0x10.

[6] 0. 0 5. 0x10.

[6] 1. 0x10.

[7] 1. 5x10.

[7] 2. 0x10.

[7] 0. 007 5s 10s 20s 40s 70s 102. 5s 105s 110s 120s σxy (Pa) y (mm).

2 4 6 8 10 (c) TGO/YSZ -2. 0x10.

[6] 0. 0 2. 0x10.

[6] 4. 0x10.

[6] 6. 0x10.

[6] 8. 0x10.

[6] 1. 0x10.

[7] 1. 2x10.

[7] (d) in YSZ 5s 10s 20s 40s 70s 102. 5s 105s 110s 120s σxy (Pa) y (mm).

2 4 6 8 10.