Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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High Temperature SO2-gas Corrosion of Fe-18%Cr-10%Ni Steels for Coal-fired Power Plant

화력발전소용 Fe-18%Cr-10%Ni 강의 고온 SO2 가스 부식

  • Lee, Dong-Bok (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
  • 이동복 (성균관대학교 신소재공학부)
  • Published : 2007.10.31
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Abstract

The corrosion characteristics of Fe-18Cr-10Ni steels were studied between $600^{\circ}C$ and $1000^{\circ}C$ in Ar+(0.2, 1)%$SG_2$ gas for up to 300 hr in order to employ Fe-18Cr-10Ni steels in the coal-fired power plants. The corrosion resistance of Fe-18Cr-10Ni steels was good due mainly to the high amount of Cr, which formed $Cr_2O_3$ from the initial corrosion stage. Fe in the steels corroded to mainly $Fe_2O_3$ and $Fe_3O_4$. Ni was not susceptible to corrosion under the current corrosion condition. Relatively thin, single-layered scales formed.

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References

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