Failure Mechanism of D-Gun Sprayed Thermal Barrier Coatings Subjected to Thermal Shock Cycling


Article Preview

Thermal barrier coatings (TBCs) with the ceramic coats of hollow spherical ZrO2-8%Y2O3 powder (HSP-YSZ) were obtained on Ni-base superalloy by detonation gun (D-gun) spraying. Thermal shock cyclic tests were performed by holding samples at 1100°C for 10 min and then water quenching to room temperature repeatedly. The D-gun sprayed TBCs didn’t fail up to 300 cycles and exhibited excellent resistance to thermal shock. Failure mechanism of D-gun sprayed TBCs subjected to thermal shock cycling was discussed.



Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie




P.L. Ke et al., "Failure Mechanism of D-Gun Sprayed Thermal Barrier Coatings Subjected to Thermal Shock Cycling", Materials Science Forum, Vols. 475-479, pp. 3977-3980, 2005

Online since:

January 2005




[1] K. Jamarani, M. Korotkin, R.V. Lang, M.F. Ouellette, K.L. Yan, and R.W. Bertram, Surf. Coat. Technol. 54-55 (1993) p.58.

[2] K.S. Fancey, and A. Matthews, J. Vac. Sci. Technol. A4 (1986) p.2656.

[3] M. Koizumi and K. Urabe, Funct. Gradient Compos. 75(6) (1989) p.887.

[4] Y.A. Kharlamov, Mater. Sci. Eng. 93 (1987) p.1.

[5] E. Kadyrov and V. Kadyrov, Adv. Mater. Process. 8 (1995) p.21.

[6] X.Q. Ma, Y.M. Rhyim, HW. Jin and C.G. Park, Mater. Manu. Proc, 14 (1999) p.195.

[7] Y.N. Wu, F.H. Wang, W.G. Hua, J. Gong, C. Sun and L.S. Wen, Surf. Coat. Technol, 166 (2003) p.189.

[8] H. Toraya, M. Yoshimura and S. Somiya, J. Amer. Ceram. Soc, 67 (1984) p.183.

[9] N. Iwamoto, N. Umesaki and S. Endo, Thin Solid Films, 127 (1985) pp.129-137.

[10] M. Matsui, T. Soma and I. Oda, J. Am. Ceram. Soc, 12 (1984) p.198.

[11] W.L. Worrell: Topics in Applied Physics (Springer, Germany 1977).