Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지
DOI QR코드

DOI QR Code

Evaluation of Effect on Thermal Fatigue Life Considering TGO Growth

TGO 성장이 열피로 수명에 미치는 영향 평가

  • Song, Hyunwoo (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Lee, Jeong-Min (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Yongseok (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Oh, Chang-Seo (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Han, Kyu Chul (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Lee, Young-Ze (Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Koo, Jae-Mean (Department of Mechanical Engineering, Sungkyunkwan University) ;
  • Seok, Chang-Sung (Department of Mechanical Engineering, Sungkyunkwan University)
  • 송현우 (성균관대학교 기계공학과) ;
  • 이정민 (성균관대학교 기계공학과) ;
  • 김용석 (성균관대학교 기계공학과) ;
  • 오창서 (성균관대학교 기계공학과) ;
  • 한규철 (성균관대학교 기계공학과) ;
  • 이영제 (성균관대학교 기계공학부) ;
  • 구재민 (성균관대학교 기계공학부) ;
  • 석창성 (성균관대학교 기계공학부)
  • Received : 2014.05.19
  • Accepted : 2014.10.27
  • Published : 2014.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

Thermal barrier coating (TBC) which is used to protect the substrate of gas turbine is exposed to high temperature environment. Because of high temperature environment, thermally grown oxide (TGO) is grown at the interface of thermal barrier coating in operation of gas turbine. The growth of TGO critically affects to durability of TBC, so the evaluation about durability of TBC with TGOs of various thickness is needed. In this research, TGO was inserted by aging of TBC specimen to evaluate the effect of the TGO growth. Then thickness of TGO was defined by microstructure analysis, and thermal fatigue test was performed with these aging specimens. Finally, the relation between thermal fatigue life and the TGO growth according to aging time was obtained.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

  1. Moon, Y. K., Sang, Y. P., Sung, H. Y., Hee, S. C., Won, K., and Kuk, H. S., "Analysis of Damage Trend for Gas Turbine 1st Bucket Related to the Change of Models," Trans. Korean Soc. Mech. Eng. A, Vol. 31, No. 6, pp. 718-724, 2007. https://doi.org/10.3795/KSME-A.2007.31.6.718
  2. Shi, J., Karlsson, A. M., Baufeld, B., and Bartsch, M., "Evolution of Surface Morphology of Thermo-Mechanically Cycled NiCoCrAlY Bond Coats," Materials Science and Engineering: A, Vol. 434, No. 1, pp. 39-52, 2006. https://doi.org/10.1016/j.msea.2006.07.048
  3. Quadakkers, W. J., Shemet, V., Sebold, D., Anton, R., Wessel, E., and Singheiser, L., "Oxidation Characteristics of a Platinized MCrAlY Bond Coat for TBC Systems during Cyclic Oxidation at $1000{^{\circ}C}$," Surface and Coatings Technology, Vol. 199, No. 1, pp. 77-82, 2005. https://doi.org/10.1016/j.surfcoat.2004.11.038
  4. Koo, J. M. and Seok, C. S. "Design Technique for Improving the Durability of Top Coating for Thermal Barrier of Gas Turbine," J. Korean Soc. Precis. Eng., Vol. 31, No. 1, pp. 15-20, 2014. https://doi.org/10.7736/KSPE.2014.31.1.15
  5. Tomimatsu, T., Zhu, S., and Kagawa, Y., "Effect of Thermal Exposure on Stress Distribution in TGO Layer of EB-PVD TBC," Acta Materialia, Vol. 51, No. 8, pp. 2397-2405, 2003. https://doi.org/10.1016/S1359-6454(03)00046-6
  6. Evans, A. G., He, M. Y., and Hutchinson, J. W., "Mechanics-Based Scaling Laws for the Durability of Thermal Barrier Coatings," Progress in Materials Science, Vol. 46, No. 3-4, pp. 249-271, 2001.
  7. Swadzba, R., Wiedermann, J., Hetmanczyk, M., Swadzba, L., Mendala, B., et al., "Microstructure Degradation of EB-PVD TBCs on Pd-Pt Modified Aluminide Coatings under Cyclic Oxidation," Surface and Coatings Technology, Vol. 237, No. 16-22, pp. 16-22, 2013. https://doi.org/10.1016/j.surfcoat.2013.09.022
  8. Shin, I. H., Koo, J. M., Seok, C. S., Yang, S. H., Lee, T. W., and Kim, B. S., "Estimation of Spallation Life of Thermal Barrier Coating of Gas Turbine Blade by Thermal Fatigue Test," Surface and Coating Technology, Vol. 205, pp. 157-160, 2010.
  9. Poza, P., Gomez-Garcia, J., and Munez, C. J., "TEM Analysis of the Microstructure of Thermal Barrier Coatings after Isothermal Oxidation," Acta Materialia, Vol. 60, No. 20, pp. 7197-7206, 2012. https://doi.org/10.1016/j.actamat.2012.09.028
  10. Kim, D. J., Lee, D. H., Koo, J. M., Song, S. J., Seok, C. S., and Kim, M. Y., "Evaluation of Bond Strength of Isothermally Aged Plasma Sprayed Thermal Barrier Coating," Trans. Korean Soc. Mech. Eng. A, Vol. 32, No. 7, pp. 569-575, 2008. https://doi.org/10.3795/KSME-A.2008.32.7.569
  11. Moridi, A., Azadi, M., and Farrahi, G. H., "Thermo-Mechanical Stress Analysis of Thermal Barrier Coating System considering Thickness and Roughness Effects," Surface and Coatings Technology, Vol. 243, pp. 91-99, 2014. https://doi.org/10.1016/j.surfcoat.2012.02.019
  12. Kim, Y. S., Lee, D. K., Lee, J. M., Song, H. W., Kim, S. H., et al., "A Study on Thermal Fatigue Life Variation according to Thermal Exposure Time," Applied Mechanics and Materials, Vol. 598, pp. 276-280, 2014. https://doi.org/10.4028/www.scientific.net/AMM.598.276

Cited by

  1. Life prediction of thermal barrier coating considering degradation and thermal fatigue vol.17, pp.2, 2016, https://doi.org/10.1007/s12541-016-0031-y
  2. Life Prediction Method for Thermal Barrier Coating of High-Efficiency Eco-Friendly Combined Cycle Power Plant pp.2198-0810, 2019, https://doi.org/10.1007/s40684-019-00066-9