High-Temperature Sulfidation of Crofer 22APU in Atmospheres Containing H₂S and H₂O

Abstract:

The work presents analyses of Crofer 22APU steel oxidation in hydrogen atmosphere containing 300 ppm H₂S and in hydrogen atmosphere containing 300 ppm and 1% H₂O. The oxidation process was conducted on two kinds of samples: pre-oxidized (pre-oxidation process was carried out in the air at a temperature of 800°C during 100 h), and not pre-oxidized at a temperature of 600 and 800°C using periodic method during 500 h. It was established that oxidation rate may be described by means of parabolic law. Determined parabolic rate constants indicate that not pre-oxidized samples undergo sulphurization in H₂/300ppm H₂S atmosphere, while in H₂/300ppm H₂S + 1%H₂O atmosphere they undergo oxidation 3-4 orders of magnitude slower.

• Periodical: Advanced Materials Research (Volumes 347-353)
• Pages: 3321-3324
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.347-353.3321
• Online since: October 2011
• Authors: Zbigniew Żurek, Artur Jaron, Aleksander Gil
• Keywords: Crofer 22APU, H₂S+h₂O, Sulfidation Rate

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