High-Temperature Corrosion of T92 Steel in N2/H2O/H2S-Mixed Gas
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The ASTM T92 steel was corroded at 600 oC and 800 oC at 1 atm of N2/3.1%H2O/2.42%H2S-mixed gas. The formed scales were thick and fragile. They consisted primarily of the outer FeS scale and the inner(FeS, FeCr2S4)-mixed scale containing a small amount of the Cr2O3 scale. This indicated that corrosionoccurred mainly via sulfidation rather than oxidation due to the H2S gas. Since FeS was present throughoutthe whole scale, T92 steel was non-protective, displaying high corrosion rates.
Abstract
The ASTM T92 steel was corroded at 600 oC and 800 oC at 1 atm of N2/3.1%H2O/2.42%H2S-mixed gas. The formed scales were thick and fragile. They consisted primarily of the outer FeS scale and the inner(FeS, FeCr2S4)-mixed scale containing a small amount of the Cr2O3 scale. This indicated that corrosionoccurred mainly via sulfidation rather than oxidation due to the H2S gas. Since FeS was present throughoutthe whole scale, T92 steel was non-protective, displaying high corrosion rates.
참고문헌 (7)
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