Effect of thermal exposure on stress distribution in TGO layer of EB-PVD TBC

T. Tomimatsu; S. Zhu; Y. Kagawa

doi:10.1016/S1359-6454(03)00046-6

Effect of thermal exposure on stress distribution in TGO layer of EB-PVD TBC

T. Tomimatsu, S. Zhu, Y. Kagawa

SCI - Physics

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

88 Citations (Scopus)

Abstract

The stress distributions in thermally grown oxide (TGO) layer of electron beam enhanced physical vapor deposited thermal barrier coating (EB-PVD TBC) before and after thermal exposure are measured by photo-stimulated luminescence spectrum. It is found that the stress in the TGO layer in original state is an order of ∼3 GPa. It increases from 3.0-3.9 GPa with the increase of heat exposure time from 0-100 h. The stress distribution in the direction of thickness in the TGO layer is not uniform. The stress near ceramic top coat is smaller than that close to metal bond coat. The stress at thickness imperfections in the TGO near the bond coat is smaller than that in the regular TGO.

Original language	English
Pages (from-to)	2397-2405
Number of pages	9
Journal	Acta Materialia
Volume	51
Issue number	8
DOIs	https://doi.org/10.1016/S1359-6454(03)00046-6
Publication status	Published - 2003 May 7

Keywords

EB-PVD TBC
Luminescence spectroscopy
Stress distribution
TGO layer
Thermal barrier coating

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/S1359-6454(03)00046-6

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@article{b28c94b4f2d34a7792c35f8cd753751d,

title = "Effect of thermal exposure on stress distribution in TGO layer of EB-PVD TBC",

abstract = "The stress distributions in thermally grown oxide (TGO) layer of electron beam enhanced physical vapor deposited thermal barrier coating (EB-PVD TBC) before and after thermal exposure are measured by photo-stimulated luminescence spectrum. It is found that the stress in the TGO layer in original state is an order of ∼3 GPa. It increases from 3.0-3.9 GPa with the increase of heat exposure time from 0-100 h. The stress distribution in the direction of thickness in the TGO layer is not uniform. The stress near ceramic top coat is smaller than that close to metal bond coat. The stress at thickness imperfections in the TGO near the bond coat is smaller than that in the regular TGO.",

keywords = "EB-PVD TBC, Luminescence spectroscopy, Stress distribution, TGO layer, Thermal barrier coating",

author = "T. Tomimatsu and S. Zhu and Y. Kagawa",

note = "Funding Information: We are very grateful for the supply of the sample from Ishikawajima-Harima Heavy Industries Co. Ltd., Tokyo, Japan. The research work is partially supported by Nano-coating Project coordinated by NEDO, Japan. Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.",

year = "2003",

month = may,

day = "7",

doi = "10.1016/S1359-6454(03)00046-6",

language = "English",

volume = "51",

pages = "2397--2405",

journal = "Acta Materialia",

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publisher = "Elsevier Limited",

number = "8",

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TY - JOUR

T1 - Effect of thermal exposure on stress distribution in TGO layer of EB-PVD TBC

AU - Tomimatsu, T.

AU - Zhu, S.

AU - Kagawa, Y.

N1 - Funding Information: We are very grateful for the supply of the sample from Ishikawajima-Harima Heavy Industries Co. Ltd., Tokyo, Japan. The research work is partially supported by Nano-coating Project coordinated by NEDO, Japan. Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.

PY - 2003/5/7

Y1 - 2003/5/7

N2 - The stress distributions in thermally grown oxide (TGO) layer of electron beam enhanced physical vapor deposited thermal barrier coating (EB-PVD TBC) before and after thermal exposure are measured by photo-stimulated luminescence spectrum. It is found that the stress in the TGO layer in original state is an order of ∼3 GPa. It increases from 3.0-3.9 GPa with the increase of heat exposure time from 0-100 h. The stress distribution in the direction of thickness in the TGO layer is not uniform. The stress near ceramic top coat is smaller than that close to metal bond coat. The stress at thickness imperfections in the TGO near the bond coat is smaller than that in the regular TGO.

AB - The stress distributions in thermally grown oxide (TGO) layer of electron beam enhanced physical vapor deposited thermal barrier coating (EB-PVD TBC) before and after thermal exposure are measured by photo-stimulated luminescence spectrum. It is found that the stress in the TGO layer in original state is an order of ∼3 GPa. It increases from 3.0-3.9 GPa with the increase of heat exposure time from 0-100 h. The stress distribution in the direction of thickness in the TGO layer is not uniform. The stress near ceramic top coat is smaller than that close to metal bond coat. The stress at thickness imperfections in the TGO near the bond coat is smaller than that in the regular TGO.

KW - EB-PVD TBC

KW - Luminescence spectroscopy

KW - Stress distribution

KW - TGO layer

KW - Thermal barrier coating

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U2 - 10.1016/S1359-6454(03)00046-6

DO - 10.1016/S1359-6454(03)00046-6

M3 - Article

AN - SCOPUS:0037425395

VL - 51

SP - 2397

EP - 2405

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

IS - 8

ER -

Effect of thermal exposure on stress distribution in TGO layer of EB-PVD TBC

Abstract

Keywords

ASJC Scopus subject areas

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