Analysis of Thermal Oxide Behavior with Isothermal Degradation of TBC Systems Applied to Single Crystal Superalloy 


Vol. 34,  No. 4, pp. 1-5, Aug.  2019
10.14346/JKOSOS.2019.34.4.1


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  Abstract

In the field of combined cycle power generation, thermal barrier coating(TBC) protects the super-heat-resistant alloy, which forms the core component of the gas turbine, from high temperature exposure. As the turbine inlet temperature(TIT) increases, TBC is more important and durability performance is also important when considering maintenance cost and safety. Therefore, studies have been made on the fabrication method of TBC and super-heat-resistant alloy in order to improve the performance of the TBC. In recent years, due to excellent properties such as high temperature creep resistance and high temperature strength, turbine blade material have been replaced by a single crystal superalloy, however there is a lack of research on TBC applied to single crystal superalloy. In this study, to understand the isothermal degradation performance of the TBC applied to the single crystal superalloy, isothermal exposure test was conducted at various temperature to derive the delamination life. The growth curve of thermally grown oxide(TGO) layer was predicted to evaluate the isothermal degradation performance. Also, microstructural analysis was performed by scanning electron microscope(SEM) and energy dispersive X-ray spectroscopy (EDS) to determine the effect of mixed oxide formation on the delamination life.

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  Cite this article

[IEEE Style]

김기근, 위성욱, 최재구, 김담현, 송현우, 이정민, 석창성, 정의석, 권석환, "Analysis of Thermal Oxide Behavior with Isothermal Degradation of TBC Systems Applied to Single Crystal Superalloy," Journal of the Korean Society of Safety, vol. 34, no. 4, pp. 1-5, 2019. DOI: 10.14346/JKOSOS.2019.34.4.1.

[ACM Style]

김기근, 위성욱, 최재구, 김담현, 송현우, 이정민, 석창성, 정의석, and 권석환. 2019. Analysis of Thermal Oxide Behavior with Isothermal Degradation of TBC Systems Applied to Single Crystal Superalloy. Journal of the Korean Society of Safety, 34, 4, (2019), 1-5. DOI: 10.14346/JKOSOS.2019.34.4.1.

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