Pulsed-terahertz reflectometry for health monitoring of ceramic thermal barrier coatings

doi:10.1364/OE.18.003477

Pulsed-terahertz reflectometry for health monitoring of ceramic thermal barrier coatings

Chia-Chu Chen, Dong-Joon Lee, Tresa Pollock, and John F. Whitaker »View Author Affiliations

Optics Express, Vol. 18, Issue 4, pp. 3477-3486 (2010)
http://dx.doi.org/10.1364/OE.18.003477

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Abstract

Terahertz time-domain reflectometry was used to monitor the progress of a thermally grown oxide layer and stress-induced, air-filled voids at the interface of an Yttria-stabilized-zirconia ceramic thermal-barrier coating and a metal surface. The thicknesses of these internal layers, observed in scanning-electron-microscope images to increase with thermal-exposure time, have been resolved – even when changing on the order of only a few micrometers – by distinguishing not only increased delays in the arrival times of terahertz pulses reflected from this multilayer structure, but also changes in the width and shape of the pulses. These unique features can be used to predict the lifetime of thermal-barrier coatings and to indicate or warn of spallation conditions. The trends of the experimental results are also confirmed through Fresnel-reflection time-domain simulations.

OCIS Codes
(320.7100) Ultrafast optics : Ultrafast measurements
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Imaging Systems

History
Original Manuscript: December 18, 2009
Revised Manuscript: January 29, 2010
Manuscript Accepted: January 29, 2010
Published: February 3, 2010

Citation
Chia-Chu Chen, Dong-Joon Lee, Tresa Pollock, and John F. Whitaker, "Pulsed-terahertz reflectometry for health monitoring of ceramic thermal barrier coatings," Opt. Express 18, 3477-3486 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-4-3477

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References

R. A. Cheville, M. T. Reiten, J. O'Hara, and D. R. Grischkowsky, “THz time domain sensing and imaging,” R. J. Hwu, and L. W. Dwight, eds. (SPIE, 2004), pp. 196–206.
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L. Duvillaret, F. Garet, and J.-L. Coutaz, “Highly precise determination of optical constants and sample thickness in terahertz time-domain spectroscopy,” Appl. Opt. 38(2), 409–415 (1999). [CrossRef]
T. Yasui, T. Yasuda, K.-i. Sawanaka, and T. Araki, “Terahertz paintmeter for noncontact monitoring of thickness and drying progress in paint film,” Appl. Opt. 44(32), 6849–6856 (2005). [CrossRef] [PubMed]
O. Trunova, T. Beck, R. Herzog, R. W. Steinbrech, and L. Singheiser, “Damage mechanisms and lifetime behavior of plasma sprayed thermal barrier coating systems for gas turbines–Part I: Experiments,” Surf. Coat. Tech. 202(20), 5027–5032 (2008). [CrossRef]
V. K. Tolpygo and D. R. Clarke, “The effect of oxidation pre-treatment on the cyclic life of EB-PVD thermal barrier coatings with platinum-aluminide bond coats,” Surf. Coat. Tech. 200(5-6), 1276–1281 (2005). [CrossRef]
S. R. Choi, D. Zhu, and R. A. Miller, “Database of Plasma-Sprayed ZrO2-8wt% Y2O3 Thermal Barrier Coatings,” JInt. J. . Appl. Ceram Technol. 1, 330–342 (2004). [CrossRef]
M. Y. He, J. W. Hutchinson, and A. G. Evans, “Simulation of stresses and delamination in a plasma-sprayed thermal barrier system upon thermal cycling,” Mater. Sci. Eng. A 345(1-2), 172–178 (2003). [CrossRef]
W. A. Ellingson, R. J. Visher, R. S. Lipanovich, and C. M. Deemer, “Optical NDT Methods for Ceramic Thermal Barrier Coatings,” Mater. Eval. 64, 45–51 (2006).
S. Song and P. Xiao, “An impedance spectroscopy study of high-temperature oxidation of thermal barrier coatings,” Mater. Sci. Eng. B 97(1), 46–53 (2003). [CrossRef]
K. W. Schlichting, K. Vaidyanathan, Y. H. Sohn, E. H. Jordan, M. Gell, and N. P. Padture, “Application of Cr3+ photoluminescence piezo-spectroscopy to plasma-sprayed thermal barrier coatings for residual stress measurement,” Mater. Sci. Eng. A 291(1-2), 68–77 (2000). [CrossRef]
L. Hess, and R. A. Cheville, “Nondestructive evaluation of ceramic bearings using THz impulse ranging,” in Conference on Lasers and Electro-Optics (2004), p. 2, vol.1.
J. I. Eldridge and T. J. Bencic, “Monitoring delamination of plasma-sprayed thermal barrier coatings by reflectance-enhanced luminescence,” Surf. Coat. Tech. 201(7), 3926–3930 (2006). [CrossRef]
D.J. Lee and J.F. Whitaker, “Spectro-temporal and echo-response analysis of arbitrary optical multilayer systems,” submitted to Appl. Optics, Nov. 2009.
N. Matsumoto, T. Nakagawa, A. Ando, Y. Sakabe, S. Kirihara, and Y. Miyamoto, “Study of Multilayer Ceramic Photonic Crystals in THz Region,” Jpn. J. Appl. Phys. 44(No. 9B), 7111–7114 (2005). [CrossRef]

Ando, A.
Araki, T.
Beck, T.
Bencic, T. J.
Choi, S. R.
Clarke, D. R.
Coutaz, J.-L.
Deemer, C. M.
Duvillaret, L.
Eldridge, J. I.
Ellingson, W. A.
Evans, A. G.
Garet, F.
Gell, M.
He, M. Y.
Herzog, R.
Hutchinson, J. W.
Jacobsen, R. H.
Jordan, E. H.
Kirihara, S.
Lipanovich, R. S.
Matsumoto, N.
Miller, R. A.
Mittleman, D. M.
Miyamoto, Y.
Nakagawa, T.
Nuss, M. C.
Padture, N. P.
Sakabe, Y.
Sawanaka, K.-i.
Schlichting, K. W.
Singheiser, L.
Sohn, Y. H.
Song, S.
Steinbrech, R. W.
Tolpygo, V. K.
Trunova, O.
Vaidyanathan, K.
Visher, R. J.
Xiao, P.
Yasuda, T.
Yasui, T.
Zhu, D.

Appl. Opt.

IEEE J.Sel. Tops. Quantum

D. M. Mittleman, R. H. Jacobsen, and M. C. Nuss, “T-ray imaging,” IEEE J.Sel. Tops. Quantum 2(3), 679–692 (1996). [CrossRef]

JInt. J. . Appl. Ceram Technol.

S. R. Choi, D. Zhu, and R. A. Miller, “Database of Plasma-Sprayed ZrO2-8wt% Y2O3 Thermal Barrier Coatings,” JInt. J. . Appl. Ceram Technol. 1, 330–342 (2004). [CrossRef]

Jpn. J. Appl. Phys.

N. Matsumoto, T. Nakagawa, A. Ando, Y. Sakabe, S. Kirihara, and Y. Miyamoto, “Study of Multilayer Ceramic Photonic Crystals in THz Region,” Jpn. J. Appl. Phys. 44(No. 9B), 7111–7114 (2005). [CrossRef]

Mater. Eval.

W. A. Ellingson, R. J. Visher, R. S. Lipanovich, and C. M. Deemer, “Optical NDT Methods for Ceramic Thermal Barrier Coatings,” Mater. Eval. 64, 45–51 (2006).

Mater. Sci. Eng. A

K. W. Schlichting, K. Vaidyanathan, Y. H. Sohn, E. H. Jordan, M. Gell, and N. P. Padture, “Application of Cr3+ photoluminescence piezo-spectroscopy to plasma-sprayed thermal barrier coatings for residual stress measurement,” Mater. Sci. Eng. A 291(1-2), 68–77 (2000). [CrossRef]
M. Y. He, J. W. Hutchinson, and A. G. Evans, “Simulation of stresses and delamination in a plasma-sprayed thermal barrier system upon thermal cycling,” Mater. Sci. Eng. A 345(1-2), 172–178 (2003). [CrossRef]

Mater. Sci. Eng. B

S. Song and P. Xiao, “An impedance spectroscopy study of high-temperature oxidation of thermal barrier coatings,” Mater. Sci. Eng. B 97(1), 46–53 (2003). [CrossRef]

Surf. Coat. Tech.

J. I. Eldridge and T. J. Bencic, “Monitoring delamination of plasma-sprayed thermal barrier coatings by reflectance-enhanced luminescence,” Surf. Coat. Tech. 201(7), 3926–3930 (2006). [CrossRef]
O. Trunova, T. Beck, R. Herzog, R. W. Steinbrech, and L. Singheiser, “Damage mechanisms and lifetime behavior of plasma sprayed thermal barrier coating systems for gas turbines–Part I: Experiments,” Surf. Coat. Tech. 202(20), 5027–5032 (2008). [CrossRef]
V. K. Tolpygo and D. R. Clarke, “The effect of oxidation pre-treatment on the cyclic life of EB-PVD thermal barrier coatings with platinum-aluminide bond coats,” Surf. Coat. Tech. 200(5-6), 1276–1281 (2005). [CrossRef]

Other

R. A. Cheville, M. T. Reiten, J. O'Hara, and D. R. Grischkowsky, “THz time domain sensing and imaging,” R. J. Hwu, and L. W. Dwight, eds. (SPIE, 2004), pp. 196–206.
D.J. Lee and J.F. Whitaker, “Spectro-temporal and echo-response analysis of arbitrary optical multilayer systems,” submitted to Appl. Optics, Nov. 2009.
L. Hess, and R. A. Cheville, “Nondestructive evaluation of ceramic bearings using THz impulse ranging,” in Conference on Lasers and Electro-Optics (2004), p. 2, vol.1.

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