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Corrosion of Fe-9%Cr-1%Mo Steel at 600 and 700oC in N2/(0.5, 2.5)%H2S-mixed Gas

김민정|박상환|이동복|Poonam Yadav|Muhammad Ali Abro|Yuke Shi
한국표면공학회 (The Korean Society of Surface Science and Engineering)|2016.04|한국표면공학회지 (Journal of Surface Science and Engineering)|제49권 제2호|pp. 147-151|DOI http://dx.doi.org/10.5695/JKISE.2016.49.2.147

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키워드

CorrosionOxidationSulfidationH2S gasT91 steel
주제분류기계공학

초록

The T91 steel (Fe-9%Cr-1%Mo) was corroded at 600 and 700oC for 5 - 70 h in the N2/(0.5, 2.5)%H2Smixed gas at one atm. It was corroded fast, forming the outer FeS layer and the inner (FeS, FeCr2O4)-mixed layer. The formation of the outer FeS layer facilitated the oxidation of Cr to FeCr2O4 in the inner layer. Since the nonprotective FeS scale was present over the whole scale, T91 steel displayed poor corrosion resistance.

Abstract

The T91 steel (Fe-9%Cr-1%Mo) was corroded at 600 and 700oC for 5 - 70 h in the N2/(0.5, 2.5)%H2Smixed gas at one atm. It was corroded fast, forming the outer FeS layer and the inner (FeS, FeCr2O4)-mixed layer. The formation of the outer FeS layer facilitated the oxidation of Cr to FeCr2O4 in the inner layer. Since the nonprotective FeS scale was present over the whole scale, T91 steel displayed poor corrosion resistance.

참고문헌 (19)

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