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High-temperature Corrosion of T22 Steel in N2/H2S-mixed Gas

MinJung Kim


ASTM T22 steel (Fe-2.25Cr-1Mo in wt.%) was corroded at 600 and 700 oC for 5-70 h under an atmospheric pressure that consisted of N2-(0.5. 2.5)%H2S-mixed gas. T22 steel corroded rapidly, forming outer FeS scales and inner (FeS, FeCr2O4)-mixed scale. The formation of the outer FeS scale facilitated the oxidation of Cr to FeCr2O4 in the inner scales. Since the nonprotective FeS scale was present over the whole scale, T22 steel displayed poor corrosion resistance.


Fe-Cr-Mo alloy, T22 steel, Corrosion, H2S gas, Sulfidation

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R. A. Meyers, Encyclopedia of physical science and technology, 3rd ed., USA; Academic press, 2001.

N. Birks, G. H. Meier, and F. S. Pettit, Introduction to high temperature oxidation of metals, 2nd ed., USA: Cambridge University, 2006.

D. Young, High temperature oxidation and corrosion of metals, UK: Elsevier, 2008.

A. M. Mebel, and D. Y. Hwang, “Theoretical study of the reaction mechanism of fe atoms with H2O, H2S, O2 and H+,” The Journal of Physical Chemistry A, vol. 105, pp. 7460-7467, 2001.

S. Mrowec and K. Przybylski, “Transport properties of sulfide scales and sulfidation of metals and alloys,” Oxidation of Metals, vol. 23, pp. 107-139, 1985.

S. Mrowec, T. Walec, T. Werber, “High-temperature sulfur corrosion of iron-chromium alloys,” Oxidation of Metals, vol. 1, pp. 93-120, 1969.

S. Mrowec and M. Wedrychowska, “Kinetics and mechanism of high-temperature sulfur corrosion of Fe-Cr-Al alloys,” Oxidation of Metals, vol. 13, pp. 481-504, 1979.

T. Liu, C. Wang, H. Shen, W. Chou, N. Y. Iwata, and A. Kimura, “The effect of Cr and Al concentration on the oxidation behavior of oxide dispersion strengthened ferritic alloys,” Corrosion Science, vol. 76, pp. 310-316, 2013.

M. Danielewski, S. Mrowec, and A. Stołosa, “Sulfidation of iron at high temperatures and diffusion kinetics in ferrous sulfide,” Oxidation of Metals, vol. 17, pp. 77-97, 1982.

D. B. Lee, M. A. Abro, P. yadav, S. H. Bak, Y. Shi, and M. J. Kim, “Corrosion of Fe-9%Cr-1%Mo steel at 600 and 700 oC in N2/(0.5, 0.25)%H2S-mixed gas,” Journal of the Korea institute of surface engineering, vol. 47, pp. 147-151, 2016.

J. Purbolaksono, J. Ahmad, A. Khinani, A. Ali, and A. Z. Rashid, “Failure case studies of SA213-T22 steel tubes of boiler through computer simulations,” Journal of Loss Prevention in the process Industries, vol. 23, pp. 98-105, 2010.

B. S. Sidhu and S. Prakash, “High-Temperature Oxidation Behavior of NiCrA1Y Bond Coats and Stellite-6 Plasma-Sprayed Coatings,” Oxidation of Metals, vol. 63, pp. 241-259, 2005.

K. Nagata, R. Nishiwaki, Y. Nakamura, and T. Maruyama, “Kinetic mechanisms of the formations of MgCr2O4 and FeCr2O4 spinels from their metal oxides metals oxides,” Solid state Ionics, vol. 49, pp. 161-166, 1991.


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