Behavior of aluminum coating by CVD-FBR in steam oxidation at 700°C
Keywords:
Aluminum coatings, Chemical Vapor Deposition in Fluidized Bed Reactors (CVD-FBR), High-temperature corrosion, Steam oxidation, Austenitic stainless steels
Abstract
Aluminum coatings have been obtained using the Chemical Vapor Deposition of Fluidized Bed Reactor technique (CVD-FBR), on austenitic stainless steels (AISI 304, AISI 316 and AISI 317), in order to evaluate resistance to steam oxidation at 700ºC. The coatings were characterized in their morphology/composition and crystalline phases using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Analysis (EDAX) and X-ray Diffraction (XRD). In addition, thermodynamic simulation was performed using Thermo-Calc® software to make the deposition of the coating on said steels similar to optimal conditions. All specimens -with and without aluminum coating by CVD-FBR- were oxidized at 700ºC, in a steam atmosphere of nearly 100% for 1000 h. The aluminum coating prevented the formation of oxide islands or crust, and reduced steel mass gain. Coated AISI steel showed a 25% reduction in mass gain compared to the same steel uncoated and oxidized under the same conditions. AISI 316 and AISI 317 steels underwent loss of mass because the brittle oxide that was formed came loose.
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Asteman, H., Svensson, J. & Johansson, L. (2002). Oxidation of 310 steel in H2O/O2 mixtures at 600°C: The effect of water-vapour-enhanced chromium evaporation. Corros. Sci., 44(11), 2635-2649.
https://doi.org/10.1016/S0010-938X(02)00056-2
Bolívar, F. (2007). Evaluación del comportamiento a elevadas temperaturas de recubrimientos de Al, Si y de A1 modificados con Si y Hf depositados mediante CVD-FBR sobre aceros ferritico-martensiticos (9-12Cr). Tesis Doctoral Facultad de Ciencias Físicas, Universidad Complutense de Madrid, España, 365pp.
Castañeda, S., Bolívar, F. & Pérez, F. (2010). Study of oxyhydroxides formation on P91 ferritic steel and CVD- FBR coated by Al in contact with Ar + 40% H2O at 650°C by TG-Mass spectrometry. Oxid. Met., 74(1-2), 61-78.
https://doi.org/10.1007/s11085-010-9200-z
Cheng, S., Kuan, S. & Tsai, W. (2006). Effect of water vapor on annealing scale formation on 316 SS. Corros. Sci., 48(3), 634-649.
https://doi.org/10.1016/j.corsci.2005.02.014
Ebbinghaus, B. (1993). Thermodynamics of gas phase chromium species: The chromium oxides, the chromium oxyhydroxides, and volatility calculations in waste incineration processes. Combust. Flame, 93(1-2), 119-137.
https://doi.org/10.1016/0010-2180(93)90087-J
Ehlers, J., Young, D., Smaardijk, E., Tyagi, A., Penkalla, H., Singheiser. L. & Quadakkers, W. (2006). Enhanced oxidation of the 9% Cr steel P91 in water vapour containing environments. Corros. Sci., 48(11), 3428-3454.
https://doi.org/10.1016/j.corsci.2006.02.002
Ennis, P. & Czyrska-Filemonowicz, A. (2003). Recent advances in creep-resistant steels for power plant applications. Sadhana, 28(3-4), 709-730.
https://doi.org/10.1007/BF02706455
Lau, K. H., Sanjurjo, A. & Wood, B. J. (1992). Aluminum and alumina coatings on copper by chemical vapor deposition in fluidized bed reactors. Surf. Coat. Technol., 54-55(1), 234-240.
https://doi.org/10.1016/0257-8972(92)90168-A
Maitra, T. & Gupta, S. (2003). Intermetallic compound formation in Fe-Al-Si ternary system: Part II. Mater. Charact., 49(4), 293-311.
https://doi.org/10.1016/S1044-5803(03)00005-6
Marulanda, J. L. (2013). Estudio de la resistencia a la oxidación en vapor de aceros inoxidables austeníticos recubiertos con aluminio y silicio mediante deposición química de vapor en lecho fluidizado. Tesis Doctoral Facultad de Ciencias Químicas, Universidad Complutense de Madrid. España, 256pp.
Marulanda, J. L, Castañeda, S. I. & Remolina, A. (2013). Recubrimientos depositados por CVD-FBR para protección a alta temperatura. Dyna, 80(181), 181-191.
Nasution, I., Velasco, A. & Kim, H. (2009). Atmospheric pressure chemical vapor deposition mechanism of Al2O3 film from AlCl3 and O2. J. Crystal Growth, 311(2), 429-434.
https://doi.org/10.1016/j.jcrysgro.2008.11.061
Pérez, F. J. & Castañeda, S. (2007). Study of oxyhydroxides formation on P91 ferritic steel and slurry coated by Al in contact with Ar + 80% H O at 650°C by TG-Mass spectrometry. Surf. Coat. Technol., 201(14), 6239-6246.
https://doi.org/10.1016/j.surfcoat.2006.11.029
Pérez, F. J., Hierro, M. P., Pedraza, F., Carpintero, M. C., Gómez, C. & Tarin, R. (2001). Effect of fluidized bed CVD aluminide coatings on the cyclic oxidation of austenitic AISI 304 stainless steel. Surf. Coat. Technol., 145(1-3), 1-7.
https://doi.org/10.1016/S0257-8972(01)01019-2
Pierson, H. O. (1999). Handbook of Chemical Vapor Deposition (CVD). Principles, technology and applications. 2ª ed. Norwich: William Andrew Publishing. Noyes.
Sánchez, L., Bolívar, F., Hierro, M. & Pérez, F. (2009). Temperature dependence of the oxide growth on aluminized 9-12% Cr ferritic-martensitic steels exposed to water vapour oxidation. Thin Solid Films, 517(11), 3292-3298.
https://doi.org/10.1016/j.tsf.2009.01.031
Stoloff, N. S., Liu, C. T. & Deevi, S. C. (2000). Emerging applications of intermetallics. Intermetallics, 8(9-11), 1313-1320.
https://doi.org/10.1016/S0966-9795(00)00077-7
Thermo-Calc Software. (2003). AB. Version P. foundation of computational thermodynamics. Stockholm, Sweden.
How to Cite
Marulanda Arévalo, J. L., Pérez Trujillo, F. J., & Castañeda Quintana, S. I. (2014). Behavior of aluminum coating by CVD-FBR in steam oxidation at 700°C. CT&F - Ciencia, Tecnología Y Futuro, 5(4), 75–84. https://doi.org/10.29047/01225383.42
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Published
2014-06-15
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Section
Scientific and Technological Research Articles
