Optimisation of FGM TBC and Their Thermal Cycling Stability

Article Preview

Abstract:

Application of FGM concept for thermal barrier coatings (TBC) provides a superior thermal stress relaxation over homogeneous or duplex coatings. It was demonstrated that FGM TBC have better oxidation resistance and longer lifetime during test conditions. In this work, new FGM TBC system was designed using high-velocity oxygen flame (HVOF) coating process. After coatings optimisation, coating layer was subjected to a hot burner test for thermal fatigue cycling with increasing heat load. It was found that FGM TBC has successfully withstood thermal cycling and prevented visible delamination or transverse cracks. New coating design may give an opportunity to develop a cost-effective FGM TBC system for gas turbine applications.

You might also be interested in these eBooks

Info:

Periodical:

Materials Science Forum (Volumes 492-493)

Pages:

9-14

Citation:

Online since:

August 2005

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2005 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] J. C. Zink: Power Eng. Vol. 3 (1998), p.20.

Google Scholar

[2] K. S. Chan, N. S. Cheruvu, G. R. Leverant: J. Eng. Gas Turbines and Power (1998), p.609.

Google Scholar

[3] P. W. Schilke, A. D. Foster, J. J. Pepe, A. M. Beltran: Adv. Mater. & Processes Vol. 4 (1992), p.22.

Google Scholar

[4] K. J. Pallos: Gas Turbine Repair Technology, GER-3957B, GE Power (2001), 25 pp.

Google Scholar

[5] T. Hirai: Materials Science and Technology: A Comprehensive Treatment, Ed. R. J. Brook (VCH Verlags GmbH, Germany, 1996), 17B, p.293.

Google Scholar

[6] Functionally Graded Materials: Design, Processing and Applications, Eds. Y. Miyamoto, W.A. Kaysser, B.H. Rabin, A. Kawasaki, and R.G. Ford. (Kluwer Academic Publishers, Bosten/ Dordrecht/ London, 1999), 320 pp.

DOI: 10.1007/978-1-4615-5301-4_7

Google Scholar

[7] S. Suresh and A. Mortensen: Fundamentals of Functionally Graded Materials, (IOM Communications Ltd., London, 1998), 166 pp.

Google Scholar

[8] A. Kawasaki and R. Watanabe: Mater. Sci. Forum Vol. 308-311 (1999), p.402.

Google Scholar

[9] M. Willert-Porada, R. Rorchert: Mater. Sci. Forum Vol. 308-311 (1999), p.422.

Google Scholar

[10] H. Fujikawa, H. Makiura, Y. Nishiyama: Materials and Corrosion Vol. 50 (1999), p.154.

Google Scholar

[11] M. Gasik: FGM - Technology Leveraged Applications, Denver (MPIF, 2002), p.88.

Google Scholar

[12] S. Ueda and M. Gasik: J. Thermal Stresses Vol. 23 (2000), p.395.

Google Scholar

[13] S. Ueda and M. Gasik: Theor. and Appl. Mech. Vol. 50 (2001), p.41.

Google Scholar

[14] N. Nomura, M. Gasik, A. Kawasaki, R. Watanabe: Functionally Graded Materials 2000, Ceramic Trans. Vol. 114 (Amer. Ceram. Soc., USA, 2001), p.223.

Google Scholar

[15] N. Nomura, M. Gasik, K. Korpiola, E. Rajamäki, A. Kawasaki, R. Watanabe, S. Hanada: Proc. 4th Pacific Rim Conf., Hawaii, 2 (Publ. Japan Institute of Metals, 2001), p.2235.

Google Scholar

[16] Y. Itoh, M. Saitoh, M. Tamura: J. Eng. Gas Turbines & Power Vol. 122 (2000), p.43.

Google Scholar

[17] A. Kawasaki, R. Watanabe: Functionally Graded Materials 1996, Eds. I. Shoita, Y. Miyamoto (Elsevier Science Publ., 1997), p.143.

Google Scholar