High Temperature Oxidation Behavior of T91 Steel in Dry and Humid Condition

Yonghao Leong, Farah Alia, Tedi Kurniawan

Abstract


High temperature oxidation behavior of T91 ferritic/martensitic steel was examined over the temperature range of 500 to 700°C in dry and humid environments.  The weight gain result revealed that oxidation occurs at all range of temperatures and its rate is accelerated by increasing the temperature. The weight gain of the oxidized steel at 700°C in steam condition was six times bigger than the dry oxidation.. SEM/EDX of the cross-sectional image showed that under dry condition, a protective and steady growth of the chromium oxide (Cr2O3) layer was formed on the steel with the thickness of 2.39±0.34 µm. Meanwhile for the humid environment, it is found that the iron oxide layer, which consists of the hematite (Fe2O3) and magnetite (Fe3O4) was formed as the outer scale, and spinnel as inner scale. This result indicated that the oxidation behavior of T91 steel was affected by its oxidation environment. The existence of water vapor in steam condition may prevent the formation of chromium oxide as protective layer.

Keywords


High temperature oxidation T91 steel; Dry and steam condition; Protective oxide

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References


Agüero, A., González, V., Gutiérrez, M., & Muelas, R. (2013). Oxidation under pure steam: Cr based protective oxides and coatings. Surface and coatings technology, 237, 30-38.

Holcomb, G. R., Covino Jr, B. S., Bullard, S. J., Cramer, S. D., Ziomek-Moroz, M., & Alman, D. E. (2004). Ultra supercritical turbines--steam oxidation (No. DOE/ARC-2004-064). Albany Research Center (ARC), Albany, OR.

http://www.ucsusa.org/clean_energy/coalvswind/c02c.html (accessed on August 12, 2016].

Kurniawan, T., Fauzi, F. A. B., & Asmara, Y. P. (2016). High-temperature Oxidation of Fe-Cr Steels in Steam Condition–A Review. Indonesian Journal of Science and Technology, 1(1), 107-114.

Laverde, D., Gomez-Acebo, T., & Castro, F. (2004). Continuous and cyclic oxidation of T91 ferritic steel under steam. Corrosion science, 46(3), 613-631.

Lepingle, V., Louis, G., Petelot, D., Lefebvre, B., & Vaillant, J. C. (2001). High temperature corrosion behaviour of some boiler steels in pure water vapour. Materials science forum, 369, 239-246.

Nandiyanto, A. B. D., Munawaroh, H. S. H., Kurniawan, T., & Mudzakir, A. (2016). Influences of Temperature on the Conversion of Ammonium Tungstate Pentahydrate to Tungsten Oxide Particles with Controllable Sizes, Crystallinities, and Physical Properties. Indonesian journal of chemistry, 16(2), 124-129.

Nakagawa, K., Y. Matsunaga, and T. Yanagisawa (2003). Corrosion behavior of ferritic steels on the air sides of boiler tubes in a steam/air dual environment, Materials at high temperatures, 2003, 67-73.

Viswanathan, R., & Bakker, W. (2001). Materials for ultrasupercritical coal power plants—Boiler materials: Part 1. Journal of materials engineering and performance, 10(1), 81-95.

Viswanathan, R., Coleman, K., & Rao, U. (2006). Materials for ultra-supercritical coal-fired power plant boilers. International journal of pressure vessels and piping, 83(11), 778-783.




DOI: http://dx.doi.org/10.17509/ijost.v1i2.3806

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