Durability Evaluation of Thermal Barrier Coating (TBC) According to Growth of Thermally Grown Oxide (TGO)

TGO 성장을 고려한 열차폐코팅의 내구성평가

  • Received : 2014.03.19
  • Accepted : 2014.10.21
  • Published : 2014.12.01


The thermal barrier coating (TBC) applied to a gas turbine can be damaged by repeated thermal fatigue during operation, so an evaluation of its durability is needed. Thermally grown oxide (TGO) is generated inside the TBC in a high-temperature environment. The growth of TGO is known to be the main cause of damage to the TBC. Therefore, the durability of TBC should be evaluated according to the growth of TGO. In this research, Kim et al.'s work on the growth of TGO with aging was used as a basis for finite element analysis. The relationship between stress and aging was derived from the finite element analysis results. The durability of the TBC with aging was evaluated through a comparison between the results of the finite element analysis and a bond strength test.


Thermal Barrier Coating;Thermally Grown Oxide;Durability Evaluation;Finite Element Analysis


  1. Yanar, N.M., Meier, G.H. and Pettit, F.S., 2002, "The Influence of Platinum on the Failure of EBPVD YSZ TBCs on NiCoCrAlY Bond Coats," Scripta Materialia, Vol. 46, pp. 325-330.
  2. Pindera, M. J., Aboudi, J. and Arnold, S. M., 2000, "The Effect of Interface Roughness and Oxide Film Thickness on the Inelastic Response of Thermal Barrier Coatings to Thermal Cycling," Materials Science and Engineering: A, Vol. 284, pp. 158-175.
  3. Koo, J.-M., Lee, S.-Y. and Seok, C.-S., 2013, "Top Coating Design Technique for Thermal Barrier of Gas Turbine," J. Korean Soc. Precis. Eng., Vol. 30, No. 8, pp. 802-808.
  4. Song, H., Kim, Y., Koo, J.-M. and Seok, C.-S., 2014, "Durability Evaluation of Thermal Barrier Coating (TBC) at High Temperature," Applied Mechanics and Materials, Vol. 467, pp.29-34.
  5. Kim, D.-J., Lee, D.-H., Koo, J.-M., Seok, C.-S. and Kim, M.-Y., 2008, "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.
  6. Kim, D.-J., Shin, I.-H., Koo, J.-M., Seok, C.-S. and Kim, M.-Y., 2009, "Evaluation on the Delamination Life of Isothermally Aged Plasma Sprayed Thermal Barrier Coating," Trans. Korean Soc. Mech. Eng. A, Vol. 33, No. 2, pp. 162-168.
  7. Toscano, J., Vassen, R., Gil, A., Subanovic, M., Naumenko, D., Singheiser, L. and Quadakkers, W.J., 2006, "Parameters Affecting TGO Growth and Adherence on MCrAlY-bond Coats for TBC's," Surface & Coatings Technology, Vol. 201, Issue 7, pp. 3906-3910.
  8. Baig, M. N., Khalid, F.A., Khan, F.N. and Rehman, K., 2014, "Properties and Residual Stress Distribution of Plasma Sprayed Magnesia Stabilized Zirconia Thermal Barrier Coatings," Ceramic International, Vol. 40, Issue 3, pp. 4853-4868.
  9. Quadakkers, W.J., Shemet, V., Sebold, D., Anton, R., Wessel, E. and Singhesier, L., 2005, "Oxidation Characteristics of a platinized MCrAlY Bond Coat for TBC Systems During Cyclic Oxidation at 1000," Surface & Coatings Technology, Vol. 199, pp. 77-82.
  10. Koo, J.-M., Seok, C.-S., Kang, M.-S., Kim, D.-J., Lee, D.-H. and Kim, M.-Y., 2010, "Evaluation of Degradation of Isothermally Aged Plasma-Sprayed Thermal Barrier Coating," Trans. Korean Soc. Mech. Eng. A, Vol. 34, No. 4, pp. 475-480.


Supported by : National Research Foundation of Korea (NRF)