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http://dx.doi.org/10.5695/JKISE.2007.40.5.219

High Temperature SO2-gas Corrosion of Fe-18%Cr-10%Ni Steels for Coal-fired Power Plant  

Lee, Dong-Bok (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
Publication Information
Journal of the Korean institute of surface engineering / v.40, no.5, 2007 , pp. 219-224 More about this Journal
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.
Keywords
$SO_2-gas$ corrosion; Steel; Chromium; Nickel; Sulfidation; Oxidation;
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