DOI: 10.1111/j.1151-2916.1998.tb02761.x. Observation of Subcritical Spall Propagation of a Thermal Barrier Coating

Observation of Subcritical Spall Propagation of a Thermal Barrier Coating

10.1111/j.1151-2916.1998.tb02761.x

Crossref journal-article

Wiley

Journal of the American Ceramic Society (311)

Abstract

Observations are reported of the room‐temperature propagation of a spalling failure mode of a thermal barrier coating (TBC) from its bond coat after oxidation. The coating is a Y2O3‐stabilized ZrO2 coating formed by electron‐beam deposition on a Ni‐Co‐Cr‐Al‐Y bond coat. The spall shape evolution and stress redistribution as the spall propagates are reported. The failure propagates primarily as an interface crack between the bond coat and the thermally grown aluminum oxide (TGO) formed on the underside of the TBC during oxidation. The observations are consistent with subcritical propagation of an interface crack between the TGO and bond coat assisted by the presence of moisture. An estimate of 9 J/m2 is made of the fracture resistance in air of the interface.

Bibliography

Sergo, V., & Clarke, D. R. (1998). Observation of Subcritical Spall Propagation of a Thermal Barrier Coating. Journal of the American Ceramic Society, 81(12), 3237â3242. Portico.

Authors 2

Valter Sergo (first)
David R. Clarke (additional)

References 16 Referenced 89

{'key': 'e_1_2_1_2_2', 'volume-title': 'Coatings for High Temperature Structural Materials', 'year': '1996'} / Coatings for High Temperature Structural Materials (1996)
10.1111/j.1151-2916.1993.tb03922.x
10.1111/j.1151-2916.1994.tb06996.x
10.1063/1.358885
10.1007/BF01046985
10.1063/1.117182
10.1111/j.1151-2916.1995.tb08493.x
P.Heydt M.S. Thesis University of California Santa Barbara CA to be published.
{'key': 'e_1_2_1_10_2', 'first-page': '420', 'volume-title': 'Current Topics in Materials Science', 'author': 'Gille G.', 'year': '1985'} / Current Topics in Materials Science by Gille G. (1985)
10.1016/0040-6090(84)90500-5
10.1016/0020-7683(84)90012-X
10.1016/S0065-2156(08)70164-9
10.1016/0956-7151(92)90333-A
10.1111/j.1151-2916.1993.tb04044.x
{'key': 'e_1_2_1_16_2', 'first-page': 'S1', 'article-title': 'Proceedings of the International Symposium on Metal/Ceramic Interfaces', 'volume': '40', 'author': 'Stolken J.', 'year': '1992', 'journal-title': 'Acta Metall. Mater.'} / Acta Metall. Mater. / Proceedings of the International Symposium on Metal/Ceramic Interfaces by Stolken J. (1992)
10.1111/j.1151-2916.1987.tb04917.x

Dates

Type	When
Created	17 years, 6 months ago (Feb. 28, 2008, 1:13 p.m.)
Deposited	1 year, 9 months ago (Nov. 23, 2023, 2:35 p.m.)
Indexed	3 weeks, 4 days ago (Aug. 6, 2025, 8:12 a.m.)
Issued	26 years, 8 months ago (Dec. 1, 1998)
Published	26 years, 8 months ago (Dec. 1, 1998)
Published Online	20 years, 7 months ago (Jan. 20, 2005)
Published Print	26 years, 8 months ago (Dec. 1, 1998)

Funders 0

None

BibTeX

@article{Sergo_1998, title={Observation of Subcritical Spall Propagation of a Thermal Barrier Coating}, volume={81}, ISSN={1551-2916}, url={http://dx.doi.org/10.1111/j.1151-2916.1998.tb02761.x}, DOI={10.1111/j.1151-2916.1998.tb02761.x}, number={12}, journal={Journal of the American Ceramic Society}, publisher={Wiley}, author={Sergo, Valter and Clarke, David R.}, year={1998}, month=dec, pages={3237–3242} }

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