Corrosion behavior of three iron-based model alloys in reducing atmospheres containing HCl and H2S at 600°C

Pan, T.J.; Gesmundo, F.; Niu, Yaran

doi:10.1016/j.corsci.2006.06.014

Cited by 22 publications

(16 citation statements)

References 36 publications

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“…Thus, the oxides of the three metals are the compounds stable in contact with the gas and very likely also within the scale. However, sulfides and chlorides of the three metals could also form within the scales at places of sufficiently low oxygen pressures, if chlorine and sulfur are able to penetrate through the scale along fast-diffusion paths such as cracks, pores and fissures, a behavior frequently reported for the case of corrosion of metallic materials in environments containing chlorine [15][16][17][18][19]. The corresponding scales are rather porous, not protective and may also allow easy penetration of sulfur from the gas phase.…”

Section: Discussionmentioning

confidence: 97%

“…2b, 4c, 5b and 6. In connection with this aspect, it is recalled that even in the case of corrosion by O 2 -Cl 2 mixtures chlorine was always present only in small amounts, and particularly concentrated close to the alloy/scale interface, even if its effects on the corrosion kinetics were quite strong [15][16][17][18][19]. The internal attack of Cr + Al differed for the four alloys.…”

Section: Scale Microstructure and Compositionmentioning

confidence: 95%

“…The addition of H 2 S to H 2 -HCl-CO 2 mixtures further accelerated the corrosion of Fe-Cr alloys [16]. Moreover, an increase of the H 2 S level in the H 2 -HCl-H 2 S-CO 2 mixture accelerated the corrosion of three Fe-Cr alloys with a chromium content ranging from 8 mass% to 18 mass%.…”

Section: Introductionmentioning

confidence: 97%

“…Previous investigations of the corrosion of Fe-Cr alloys in gaseous mixtures of H 2 -HCl-CO 2 [15] and H 2 -HCl-H 2 S-CO 2 [16] at 600°C indicated that the addition of HCl to H 2 -CO 2 mixtures accelerated the corrosion of Fe-Cr alloys and produced an increase in the thickness of the external scales, except for Fe-18Cr at 600°C [15]. The addition of H 2 S to H 2 -HCl-CO 2 mixtures further accelerated the corrosion of Fe-Cr alloys [16].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, an increase of the H 2 S level in the H 2 -HCl-H 2 S-CO 2 mixture accelerated the corrosion of three Fe-Cr alloys with a chromium content ranging from 8 mass% to 18 mass%. In particular, for Fe-18Cr an increase of the H 2 S content of the gas produced a change from the growth of chromia scales to the formation of mixtures of iron and chromium oxides [16].…”

Section: Introductionmentioning

confidence: 99%

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Accelerated Corrosion of Fe–xCr–10Al Alloys Containing 0–20 at.% Cr Induced by Sulfur and Chlorine in a Reducing Atmosphere at 600 °C

Pan

Niu

2007

Oxid Met

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The corrosion behavior of five Fe-xCr-Al alloys with a constant Al content of 10 at.% and Cr contents ranging from 0 at.% to 20 at.% was examined at 600°C in a H 2 -HCl-H 2 S-CO 2 gas mixture providing 3.7 9 10 -22 atm O 2 , 2.4 9 10 -14 atm Cl 2 and 3.9 9 10 -9 atm S 2 . All the alloys formed duplex scales containing an outermost layer of iron oxide plus an inner layer composed of mixtures of the oxides of all the alloy components. Besides, a region of internal attack of Al or Al + Cr, whose depth decreased with increasing Cr content, formed in all the alloys. The simultaneous presence of chlorine and sulfur in the gas mixture significantly accelerated the corrosion of all the alloys with respect to their oxidation in a simpler H 2 -CO 2 mixture providing the same oxygen pressure, by forming thick and cracked scales. The effect was particularly large for the high-Cr alloys due to their inability to form external protective alumina scales in the present gas mixture.

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Section: Discussionmentioning

confidence: 97%

Section: Scale Microstructure and Compositionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Accelerated Corrosion of Fe–xCr–10Al Alloys Containing 0–20 at.% Cr Induced by Sulfur and Chlorine in a Reducing Atmosphere at 600 °C

Pan

Niu

2007

Oxid Met

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Corrosion

Włodarczyk

Kobyłecki

Bis

2010

Handbook of Combustion

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The sections in this article are Introduction Corrosion Corrosion Processes Subsurface Corrosion Corrosion in the Power Industry Theory Effect of Deposition on Corrosion Rate Effect of Fuel Type on the Damage of Boiler Elements Mechanism of Corrosion in the Presence of Superheated Steam Sulfate–Sulfide Corrosion Mechanism Chloride Corrosion Mechanism Applications in Research and Industry Outlook Summary

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Behaviour of S31400 and S32205 steels in HCl‐ and H₂S‐containing gas atmospheres under a low oxygen partial pressure between 480 and 680 °C

Schmid

Mori

Haubner

et al. 2018

Materials & Corrosion

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The effects of gaseous hydrogen chloride and hydrogen sulphide on the hightemperature corrosion of the austenitic SS. S31400 and the duplex steel S32205 were investigated in an atmosphere without molecular O 2 . The testing gas atmosphere consisted of 3.8 vol% HCl, 1.9 vol% CO 2 , 0.3 vol% CO, 2.8 vol% H 2 , 0.02 vol% H 2 S, bal. N 2 . It showed a similar composition, which is present in the thermal cracking of anthropogenic resources. Tests were performed between 480 and 680°C for 1, 3 and 10 days. Mass loss measurements were done for all experiments. After the reaction times the samples showed non-adherent and porous layers of corrosion products, which were investigated by SEM/EDX and XRD. Metallographic cross sections of the corroded samples were prepared by water-free polishing to investigate the microstructure of the corrosion products. Both materials formed large chromium sulphide crystals on top of a chromium oxide layer and a chlorine-containing layer beneath the oxide. The ferrite phase of the duplex steel is selectively attacked, while the austenite phase remained without severe corrosion. Steel S31400 showed a uniform corrosion.

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Corrosion behavior of three iron-based model alloys in reducing atmospheres containing HCl and H2S at 600°C

Cited by 22 publications

References 36 publications

Accelerated Corrosion of Fe–xCr–10Al Alloys Containing 0–20 at.% Cr Induced by Sulfur and Chlorine in a Reducing Atmosphere at 600 °C

Accelerated Corrosion of Fe–xCr–10Al Alloys Containing 0–20 at.% Cr Induced by Sulfur and Chlorine in a Reducing Atmosphere at 600 °C

Corrosion

Behaviour of S31400 and S32205 steels in HCl‐ and H₂S‐containing gas atmospheres under a low oxygen partial pressure between 480 and 680 °C

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Corrosion behavior of three iron-based model alloys in reducing atmospheres containing HCl and H2S at 600°C

Cited by 22 publications

References 36 publications

Accelerated Corrosion of Fe–xCr–10Al Alloys Containing 0–20 at.% Cr Induced by Sulfur and Chlorine in a Reducing Atmosphere at 600 °C

Accelerated Corrosion of Fe–xCr–10Al Alloys Containing 0–20 at.% Cr Induced by Sulfur and Chlorine in a Reducing Atmosphere at 600 °C

Corrosion

Behaviour of S31400 and S32205 steels in HCl‐ and H2S‐containing gas atmospheres under a low oxygen partial pressure between 480 and 680 °C

Contact Info

Product

Resources

About

Behaviour of S31400 and S32205 steels in HCl‐ and H₂S‐containing gas atmospheres under a low oxygen partial pressure between 480 and 680 °C