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http://dx.doi.org/10.4191/kcers.2011.48.5.396

Mechanical Behavior of Layered YSZ Thermal Barrier Coatings using Indentation Test  

Lee, Dong-Heon (School of Mechanical Systems Engineering, Kookmin University)
Lee, Kee-Sung (School of Mechanical Systems Engineering, Kookmin University)
Publication Information
Journal of the Korean Ceramic Society / v.48, no.5, 2011 , pp. 396-403 More about this Journal
Abstract
In this study, we investigated the mechanical behaviors of layered thermal barrier coatings by indentations. Various single and double-layered thermal barrier coatings were deposited by air plasma spray process using different type of commercialized YSZ (Yttria stabilized zirconia) starting powders. Indentation stress-strain curve, load-displacement curve and hardness of the single and the double-layered thermal barrier coatings were obtained experimentally and analyzed. The indentation damages at the same loads were compared, and thus, the results depend on the structure of each coating. The result indicates improvement in damage resistances from tailoring of layered structures in the component of gas turbine system is expected.
Keywords
Thermal barrier coatings; Gas turbine; Hertzian contact; Indentation;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
Times Cited By SCOPUS : 0
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