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Hot corrosion behavior of Pt-Ir modified aluminide coatings on the nickel-base single crystal superalloy TMS-82+

Published online by Cambridge University Press:  03 March 2011

Y.N. Wu ,
A. Yamaguchi ,
H. Murakami  and
S. Kuroda
Y.N. Wu*
Affiliation:
Coating Materials Group, Composites and Coatings Center, National Institute for Materials Science (NIMS), Tsukuba 305-0047, Japan
A. Yamaguchi
Affiliation:
Coating Materials Group, Composites and Coatings Center, National Institute for Materials Science (NIMS), Tsukuba 305-0047, Japan; and Graduate School of Engineering, Division of Materials Science and Engineering, Shibaura Institute of Technology, Tokyo 135-8548, Japan
H. Murakami
Affiliation:
Coating Materials Group, Composites and Coatings Center, National Institute for Materials Science (NIMS), Tsukuba 305-0047, Japan
S. Kuroda
Affiliation:
Coating Materials Group, Composites and Coatings Center, National Institute for Materials Science (NIMS), Tsukuba 305-0047, Japan
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Platinum-iridium films (Ir = 0, 32, 46, 83, 100 at.%) were deposited on the nickel-base single crystal superalloy through magnetron sputtering. After annealing and aluminizing, the Pt-Ir modified aluminide coatings mainly consisted of PtAl2 and β-(Ni,Pt,Ir)Al phases. Hot corrosion resistance of Pt-Ir modified aluminide coatings with the different Ir contents were evaluated by exposure at 1173 K in the presence of the 90%Na2SO4 + 10%NaCl (wt%) salt deposits. The corrosion kinetics curves of the specimens were plotted up to 100 h heating time. The phase constitution, morphology of corrosion products, and element concentrations along the cross section were also measured. The lowest mass gain (0.299 mg/cm2, after 100 h) was observed for Pt-46Ir aluminide coating because the dense and continuous protective Al2O3 scale formed. Phase transformation from β-(Ni,Pt)Al to γ′-(Ni,Pt)3Al, characteristics of the scale, and protection by Pt/Ir enriched layer had the important effects on the hot corrosion behavior of modified aluminide coatings.

Keywords

CoatingCorrosionPt
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 1 , January 2007 , pp. 206 - 216
Copyright
Copyright © Materials Research Society 2007

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References

REFERENCES

1Gobel, M., Rahmel, A., and Schutze, M.: The cyclic-oxidation behavior of several nickel-base single-crystal superalloys without and with coatings. Oxid. Met. 41, 271 (1994).CrossRefGoogle Scholar
2Sun, J.H., Jang, H.C., and Chang, E.: Effects of pretreatments on structure and oxidation behaviour of d.c.-sputtered platinum aluminide coatings. Surf. Coat. Technol. 64, 195 (1994).CrossRefGoogle Scholar
3Benoist, J., Badawi, K.F., Malié, A., and Ramade, C.: Microstructure of Pt-modified aluminide coatings on Ni-based superalloys. Surf. Coat. Technol. 182, 14 (2004).Google Scholar
4Fountain, J.G., Golightly, F.A., Scott, F.H., and Wood, G.C.: The influence of platinum on the maintenance of α-Al2O3 as a protective scale. Oxid. Met. 10, 341 (1976).CrossRefGoogle Scholar
5Tawancy, H.M., Abbas, N.M., and Rhys-Jones, T.N.: Role of platinum in aluminide coatings. Surf. Coat. Technol. 49, 1 (1991).Google Scholar
6Niu, Y., Wu, W., Boone, D., Smith, J., Zhang, J., and Chen, C.: Oxidation behavior of simple and Pt-modified aluminide coatings on IN738 at 1100 °C. J. Phys. E 3, 511 (1993).Google Scholar
7Felten, E.J.: Use of platinum and rhodium to improve oxide adherence on Ni-8Cr-6Al alloys. Oxid. Met. 10, 23 (1976).CrossRefGoogle Scholar
8Felten, E.J. and Pettit, F.S.: Development, growth, and adhesion of Al2O3 on platinum-aluminum alloys. Oxid. Met. 10, 189 (1976).CrossRefGoogle Scholar
9Chen, J.H. and Little, J.A.: Degradation of the platinum aluminide coating on CMSX4 at 1100 °C. Surf. Coat. Technol. 92, 69 (1997).CrossRefGoogle Scholar
10Zhang, Y., Haynes, J.A., Lee, W.Y., Wright, I.G., Pint, B.A., Cooley, K.M., and Liaw, P.K.: Effects of Pt incorporation on the isothermal oxidation behavior of chemical vapor deposition aluminide coatings. Metall. Mater. Trans. A 32, 1727 (2001).CrossRefGoogle Scholar
11Deb, P., Boone, D.H., and Manley, T.F.: Surface instability of platinum modified aluminide coatings during 1100 °C cyclic testing. J. Vac. Sci. Technol., A 5, 3366 (1987).CrossRefGoogle Scholar
12He, D., Guan, H., Sun, X., and Jiang, X.: Manufacturing, structure and high temperature corrosion of palladium-modified aluminide coatings on nickel-base superalloy M38. Thin Solid Films 376, 144 (2000).CrossRefGoogle Scholar
13Strangman, T.E. and Solfest, P.A.: U.S. Patent No. 4880614, 14 Nov 1989.Google Scholar
14Murakami, H., Yano, T., and Sodeoka, S.: Process dependence of Ir-based bond coatings. Mater. Trans. 45, 2886 (2004).CrossRefGoogle Scholar
15Hosoda, H., Miyazaki, S., and Hanada, S.: Potential of IrAl base alloys as ultrahigh-temperature smart coatings. Intermetallics 8, 1081 (2000).CrossRefGoogle Scholar
16Karunaratne, M.S.A. and Reed, R.C.: Interdiffusion of the platinumgroup metals in nickel at elevated temperatures. Acta Mater. 51, 2905 (2003).CrossRefGoogle Scholar
17Lee, K.N. and Worrell, W.L.: The oxidation of iridium-aluminum and iridium-hafnium intermetallics at temperatures above 1550 °C. Oxid. Met. 32, 357 (1989).CrossRefGoogle Scholar
18Chou, T.C.: The formation of discontinuous Al2O3 layers during high-temperature oxidation of IrAl alloys. J. Mater. Res. 5, 378 (1990).Google Scholar
19Yamabe-Mitarai, Y. and Aoki, H.: Solid-solution hardening of Ir by Pt and Ni. Mater. Lett. 56, 781 (2002).CrossRefGoogle Scholar
20Bharadwaj, S.R., Tripathi, S.N., and Chandrasekharaiah, M.S.: The Ir-Pt (iridium-platinum) system. J. Phase Equilib. 16, 460 (1995).CrossRefGoogle Scholar
21Wu, Y.N., Suzuki, A., Murakami, H., and Kuroda, S.: Characterization of electroplated platinum–iridium alloys on the nickel-base single crystal superalloy. Mater. Trans. 46, 2176 (2005).CrossRefGoogle Scholar
22Suzuki, A., Harada, M., Wu, Y.N., and Murakami, H.: Microstructual characterization of sputtered Pt-Ir coatings on Ni-base single crystal superalloy. Mater. Trans. 46, 1760 (2005).CrossRefGoogle Scholar
23Fisher, G., Datta, P.K., and Burnell-Gray, J.S.: An assessment of the oxidation resistance of an iridium and an iridium/platinum low-activity aluminide/MarM002 system at 1100 °C. Surf. Coat. Technol. 113, 259 (1999).Google Scholar
24Wu, F., Murakami, H., and Harada, H.: Cyclic oxidation behavior of iridium-modified aluminide coatings for nickel-base single crystal superalloy TMS-75. Mater. Trans. 44, 1675 (2003).Google Scholar
25Kuppusami, P. and Murakami, H.: A comparative study of cyclic oxidized Ir aluminide and aluminized nickel base single crystal superalloy. Surf. Coat. Technol. 186, 377 (2004).CrossRefGoogle Scholar
26Bucher, E., Brinkman, W.F., Maita, J.P., and Cooper, A.S.: Properties of the Ni-Ir alloy system. Phys. Rev. B 1, 274 (1970).CrossRefGoogle Scholar
27Gurrappa, I.: Hot corrosion behavior of CM 247 LC alloy in Na2SO4 and NaCl environments. Oxid. Met. 51, 353 (1999).CrossRefGoogle Scholar
28Goebel, J.A., Pettit, F.S., and Goward, G.W.: Mechanisms for the hot corrosion of nickel-base alloys. Metall. Trans. 4, 261 (1973).CrossRefGoogle Scholar
29Tolpygo, V.K. and Clarke, D.R.: Surface rumpling of a (Ni, Pt)Al bond coat induced by cyclic oxidation. Acta Mater. 48, 3283 (2000).CrossRefGoogle Scholar
30Pint, B.A., Martin, J.R., and Hobbs, L.W.: The oxidation mechanism of θ-Al2O3 scales. Solid State Ionics 78, 99 (1995).CrossRefGoogle Scholar
31Hancock, P.: Vanadic and chloride attack of superalloys. Mater. Sci. Technol. 3, 536 (1987).Google Scholar
32Wu, W.T., Rahmel, A., and Schrorr, M.: Role of platinum in the Na2SO4-induced hot corrosion resistance of aluminum diffusion coatings. Oxid. Met. 22, 59 (1984).CrossRefGoogle Scholar
33Deb, P. and Boone, D.H.: Platinum aluminide coating structural effects on hot corrosion resistance at 900 °C. J. Vac. Sci. Technol., A 3, 2578 (1985).Google Scholar
34Abe, T., Ode, M., Yamabe-Mitarai, Y., and Murakami, H.: to be published.Google Scholar
35Gleeson, B., Wang, W., Hayashi, S., and Sordelet, D.: Effects of platinum on the interdiffusion and oxidation behavior of Ni-Al-based alloys. Mater. Sci. Forum 461–464, 213 (2004).CrossRefGoogle Scholar
36Murakami, H., Honma, T., Koizumi, Y., and Harada, H.: Distribution of platinum group metals in Ni- base single-crystal superalloys. Proceedings of the International Symposium on Superalloys (2000).CrossRefGoogle Scholar