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INFLUENCE OF STEAM CONTENT ON OXIDATION OF SA213T91 STEEL AT 650 ℃ |
ZHANG Duqing1; XU Jingjun2 |
1. Shandong Electric Research Institute; Jinan 250013
2. Shenyang National Laboratory for Materials Science; Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110016 |
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Abstract The steam oxidation of T91 steel exposed to the Ar+H2O mixed atmosphere at 650 ℃ was investigated. The formed scales were successively composed of Fe2O3,Fe3O4 and (Fe,Cr)3O4 from the outer surface. The steam oxidation kinetics of T91 steel followed the parabolic law at the atmosphere with 5% steam and partially followed the parabolic law at the atmosphere with 7% and 10% steam. Increasing the steam content remarkably accelerated the steam oxidation rate of T91 steel. It was observed that the multilayer oxidation scales formed on the surface of T91 steel after exposed to the mixed atmosphere with 5\%、7% and 10% steam (vol.%) for 10 h. The effect of the steam contents in the mixed atmosphere on the oxidation mechanism of T91 steel was discussed.
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Received: 04 January 2009
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Corresponding Authors:
ZHANG Duqing
E-mail: zhangduqing@163.com
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[1] Yang H. Study on performance of corrosion preventing and wear resisting coatings on “tubes of four kinds ”in the boiler [J]. Therm. Power Gener., 2005, 11: 96-98
(杨晖. 锅炉“四管”防腐耐磨涂层性能研究 [J]. 热力发电, 2005, 11: 96-98)
[2] Li X G, Qi H B, Wang X G. High temperature corrosion of TP304H boiler re-heater tubes [J]. Mater. Prot., 2003, 36(6): 9-11
(李辛庚, 齐慧滨, 王学刚. 火电厂锅炉再热器管高温腐蚀研究 [J]. 材料保护, 2003, 36(6): 9-11)
[3] Cumino G, Cuonzo S D, Gianfrancesco A D. Advanced high chromium ferritic steels for boiler components operating at high temperature [J]. Latin Am. Appl. Res., 2002, 32(3): 1-5
[4] Otguro Y, Matsubara M. Creep rupture strength of heat affected zone for 9Cr ferritic heat resisting steels [J]. Nucl.Eng. Des., 2000, 196: 51-61
[5] Minami Y, Tooyama A,Seki M. Steam-oxidation resistance of shot blasted stainless steel tubing after 10 year service [J]. NKK Technol. Rev., 1996, 75(1): 10-14
[6] Nickel H, Wouters T, Thiele M. The effect of water vapor on the oxidation behavior of 9% Cr steels combustion gases [J]. Fresenius J. Anal. Chem., 1998, 361: 540-544
[7] Kofstand P. High Temperature Corrosion [M]. Essex,UK: Elsevier Applied Science,1988
[8] Ennis P J, Quadakkers W J.Mechanisms of steam oxidation in high strength martensitic steels [J]. Int. J. Pressure Vessels Piping, 2007,84(1-2): 75-81
[9] Rodr'guez R, Mart'n-Meizoso A, Ocana I, et al. Standard surface defects produced by water vapour oxidation in steels used in fossil fuel fired power plants [J]. Mater. Sci.Eng., 2003, A 342: 1-10
[10] Sundararajan T, Kuroda S. High temperature of nanoceria coated 9Cr-1Mo ferritic steel in air and steam [J].Surf. Coat. Technol., 2006, 201(6): 2124-2130
[11] Chen Y, Sridharan K, Allen T. Corrosin behavior of ferritic-martensitic steel T91 in super critical water [J]. Corros.Sci., 2006, 48: 2843-2854
[12] Laverde D, Gomez-Acebo T, Castro F. Continuous and cyclic oxidation of T91 ferritic steel under steam [J]. Corros.Sci., 2004, 46: 613-631
[13] Zurek J, wessel E, Niewolak L, et al. Anomalous temperature dependence of oxidation kinetics during steam oxidation of ferritic steels in the temperature range 550-650 ℃ [J]. Corros. Sci., 2004, 46: 2301-2317 |
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