Aluminide Coating Prepared on Ni-Base Superalloy by Pack Cementation

Abstract:

Alumincoating was prepared on a Ni-Cr-W-Al nickel-base superalloy by pack cementation, the effects of Al content and aluminizing temperature on coating formation were investigated. Coating microstructures were investigated using optical and scanning electron microscopes, EDS and X-ray diffraction (XRD) techniques. The results showed that the coatings prepared at 800°C in the powders with 15%, 30% and 99% Al were different. NiAl₃ coating was obtained in the conditions of aluminizing temperature of 700°C, 750°C, 850°C and of Al content of 99%.

• Periodical: Advanced Materials Research (Volume 848)
• Pages: 11-17
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.848.11
• Online since: November 2013
• Authors: Feng Zhou, Ming Gao, Gan Feng Tu, Kui Liu, Ke Wu Peng*
• Keywords: Aluminizing Coating, Microstructure, Nickel-Base Superalloy, Pack Cementation, Phase Composition

References

[1] Goward, G.W., D.H. Boone and C.S. giggins. Formation and degradation mechanisms of aluminide coatings on nickel-base superalloys. Asm Transactions Quarterly, 1967. 60(2): p.228.

[2] Goward, G.W. Current research on surface protection of superalloys for gas turbine engines. Journal of Metals, 1970. 22(10): p.31.

DOI: 10.1007/bf03355665

[3] Goward, G.W. and D.H. Boone. Mechanisms of formation of diffusion aluminide coatings on nickel-base superalloys. Oxidation of Metals, 1971. 3(5): p.475.

DOI: 10.1007/bf00604047

[4] Janssen, M. and G.D. Rieck. Reaction diffusion and kirkendall-effect in nickel-aluminum system. Transactions of the Metallurgical Society of Aime, 1967. 239(9): p.1372.

[5] Redden, T.K. Ni-al coating-base metal interactions in several nickel-base alloys. Transactions of the Metallurgical Society of Aime, 1968. 242(8): p.1695.

[6] Goward, G.W. Progress in coatings for gas turbine airfoils. Surface & Coatings Technology, 1998. 108(1-3): pp.73-79.

DOI: 10.1016/s0257-8972(98)00667-7

[7] SHen, P., M.J. Tsai and D. Gan. Microstructures of a 1st-stage aluminized coating on rene-80. Materials Science and Engineering, 1986. 82(1-2): pp.197-202.

DOI: 10.1016/0025-5416(86)90107-2

[8] Liao, F. S, etal. Microstructures of 1st-stage aluminized coatings on nickel-based superalloys. Materials Science and Engineering a-Structural MaterialsProperties Microstructure and Processing, 1990. 125(2): pp.215-221.

DOI: 10.1016/0921-5093(90)90171-x

[9] Chien, A., D. Gan and P. Shen. Microstructures of two-stage aluminized coatings on Inconel 600. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, 1996. 206(2): pp.215-224.

DOI: 10.1016/0921-5093(95)09899-2

[10] Chien, A., D. Gan and P. Shen. Microstructures of two-stage aluminized coatings on pure Ni. materials science and engineering a-structural materials properties microstructure and processing, 1999. 272(1): pp.207-214.

DOI: 10.1016/s0921-5093(99)00454-2

[11] Huang, H.L., Y.Z. Chen and D. Gan. Microstructure of first-stage aluminized coating on a Ni-Cr alloy. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, 2002. 328(1-2): pp.238-244.

DOI: 10.1016/s0921-5093(01)01699-9

[12] Huang, H.L. and D. Gan. Microstructure of aluminized coating on a Ni-Cr alloy after annealing treatment. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, 2008. 485(1-2): pp.550-557.

DOI: 10.1016/j.msea.2007.09.017

[13] Lu Tong, Yao Dengzun, Zhou Chungen. low-temperature formation of aluminide coatings on ni-baswe superalloys by pack cementation process. Chines Journal of Aeronautics, 2010. 23(1): pp.381-385.

DOI: 10.1016/s1000-9361(09)60231-4