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http://dx.doi.org/10.5695/JKISE.2019.52.5.251

Study of High Temperature Corrosion of Fe-Cr-W Steel in Coal-Biomass Co-firing Power Plant Environment  

Kim, Min Jung (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
Xiao, Xiao (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
Lee, Dong Bok (School of Advanced Materials Science and Engineering, Sungkyunkwan University)
Publication Information
Journal of the Korean institute of surface engineering / v.52, no.5, 2019 , pp. 251-257 More about this Journal
Abstract
Fe-9Cr-2W steels were corroded at $600-800^{\circ}C$ for up to 100 hr in ($Na_2SO_4-K_2SO_4-Fe_2O_3$)-($CO_2-0.3%SO_2-6%O_2$) mixed gas. The poor condition samples formed thick oxide scales that consisted primarily of $Fe_2O_3$ as the major oxide and $Fe_3O_4$, FeO as the minor one through preferential oxidation of Fe. Fe-9Cr-2W steels corroded fast, forming thick and non-protective scale. The scale divided into the outer and inner layer, which consisted of the outer Fe-O layer and the inner (Fe,Cr)-O layer containing some (Fe,Cr)-S.
Keywords
High Temperature corrosion; $CO_2$; $SO_2$; Oxidation; Sulfidation;
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Times Cited By KSCI : 2  (Citation Analysis)
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