The Effect of Flue Gas Environment on the Corrosion Behavior of the Sulfuric Acid Dew-Point Corrosion Resistant Steel

Byoung Ho Lee; Min Ho Jo; Yun Ha Yoo

doi:10.4028/www.scientific.net/MSF.941.1705

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HomeMaterials Science ForumMaterials Science Forum Vol. 941The Effect of Flue Gas Environment on the...

The Effect of Flue Gas Environment on the Corrosion Behavior of the Sulfuric Acid Dew-Point Corrosion Resistant Steel

Abstract:

In order to compare the corrosion resistance of conventional low carbon steel, Cu containing low carbon steel for sulfuric acid dew-point corrosion inhibition, and stainless 409L, immersion tests were carried out in 50 wt.% sulfuric acid. The effects of HCl concentraion on the corrosion behavior in a fixed sulfuric acid concentration (16.9 vol.%) was also investigated by immersion test. In addition to immersion test, field test in a thermal plant was carried out for 10 months. As a result, it was confirmed that Cu-containing dew-point corrosion resistent steel has the highest corrosion resistance compared with other materials. To verify superior corrosion resistence of dew-point corrosion resistant steel, surface morpology after various test was observed by SEM. It was found that surface corroded product of the dew-point corrosion resistant steel was much denser and thicker compared with the other steel.

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Periodical:

Materials Science Forum (Volume 941)

Pages:

1705-1709

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.941.1705

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Online since:

December 2018

Authors:

Byoung Ho Lee*, Min Ho Jo, Yun Ha Yoo

Keywords:

Acid Dew Point Corrosion, Corrosion, Corrosion Resistant Steel, Thermal Power Plant

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References

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