Paper Titles
Effect of HVOF Sprayed MCrAlY Coating on Thermomechanical and Isothermal Fatigue Life of Superalloy M963
p.23
Performance Study of Erosion Wear of Nanostructured WC-12Co Coatings Sprayed by HVOF
p.27
Fabrication and Evaluation of Plasma-Sprayed Functionally Gradient W/Cu Coatings as Plasma Facing Materials in Fusion Devices
p.31
Microstructure and Abrasion Resistance Mechanism of CrB Particles Reinforced MMC Coating
p.35
Micro-Damage Evolution and Residual Stress in Thermally Grown Oxides of Detonation Gun Sprayed Thermal Barrier Coatings
p.39
Plasma Transferred Arc Powder Surfacing Technology of Thrust Face
p.43
Microstructure and Performance Analysis of Cr3C2-25%NiCr Coating Prepared by Plasma Spraying Process
p.47
Microstructure and Properties of Multi-Function Micro-Plasma Sprayed Al2O3 Coatings
p.51
Effect of Heat Treatment on Microstructures and Properties of Zinc-Aluminum Coating on AZ91D Magnesium Alloy
p.55

Micro-Damage Evolution and Residual Stress in Thermally Grown Oxides of Detonation Gun Sprayed Thermal Barrier Coatings

Article Preview

Abstract:

Thermal barrier coatings (TBCs) were prepared by the recently-developed detonation gun spray process. The oxide scale formation and micro-damage evolution of these coatings during oxidation in air at 1100 °C were investigated. It was found that duplex oxide scales, the upper oxide mixture scale and α-Al2O3 subscale, form at the interface between bond coat (BC) and top coat (TC) during the oxidation. Microcracks usually nucleate within the porous oxide mixture layer. With the increase of oxidation time, some microcracks coalesce to form a long crack. Residual stress in the thermally grown oxides (TGO) was measured using photo-stimulated luminescence spectroscopy. It was found that compressive residual stress exhibits a fast increase at the beginning of oxidation up to maximum value for about 10h. Then, the compressive stress begins to decline up to 100h. Local stress distribution showed that the micro-damage in the TGO causes a remarkable decrease in the magnitude of compressive residual stress.

You might also be interested in these eBooks
Surface Engineering View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 373-374)

Pages:

39-42

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.373-374.39

Citation:

Cite this paper

Online since:

March 2008

Authors:

Z.X. Chen, Shijie Zhu, Z.G. Wang, F.H. Yuan

Keywords:

Damage, Detonation Gun (D-Gun) Spraying, Oxidation, Residual Stress, Thermal Barrier Coating (TBC)

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2008 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] N.P. Padture, M. Gell and E.H. Jordan: Science Vol. 296 (2002), p.280.

Google Scholar

[2] Y.N. Wu, F.H. Wang, W.G. Hua, J. Gong, C. Sun and L.S. Wen: Surf. Coat. Technol. Vol. 166 (2003) p.189.

Google Scholar

[3] F.H. Yuan, Z.W. Huang, Z.G. Wang, C. Sun and S.J. Zhu: J. Mater. Sci. Technol. Vol. 20 (2004) p.85.

Google Scholar

[4] Z.X. Chen, Z.G. Wang, F.H. Yuan and S.J. Zhu: Mater. Sci. Eng. A (2007), in press.

Google Scholar

[5] A.G. Evans, D.R. Mumm, J.W. Hutchinson, G.H. Meier and F.S. Pettit: Prog. Mater. Sci. Vol. 46 (2001) p.505.

Google Scholar

[6] T. Tomimastu, S.J. Zhu and Y. Kagawa: Acta. Mater. Vol. 51 (2003), p.2397.

Google Scholar

[7] D.R. Clarke, J.R. Christensen and V.K. Tolpygo: Surf. Coat. Technol. Vol. 94 (1997), p.89.

Google Scholar

[8] H. Choi, B. Yoon, H. Kim and C. Lee: Surf. Coat. Technol. Vol. 150 (2002), p.297.

Google Scholar

[9] K.W. Schlichting, N.P. Padture, E.H. Jordan and M. Gell: Mater. Sci. Eng. A Vol. 342 (2003), p.120.

Google Scholar

[10] W.R. Chen, X. Wu, B.R. Marple and P.C. Patnaik: Surf. Coat. Technol. Vol. 201 (2006), p.1074.

Google Scholar

[11] X.C. Zhang, B.S. Xu, H.D. Wang and Y.X. Wu: Mater. Design Vol. 27 (2006), p.989.

Google Scholar

[12] M. Baker, J. Rosler and G. Heinze: Acta. Mater. Vol. 53 (2005), p.469.

Google Scholar

[13] G. Lee, A. Atkinson and A. Selcuk: Surf. Coat. Technol. Vol. 201 (2006), p.3931.

Google Scholar