Comparison of the high-temperature chloride-induced corrosion between duplex steel and Ni based alloy in presence of H2S

Schmid, Alexander; Mori, Gregor; Hönig, Stefan; Weil, Mat­thias; Strobl, Susanne; Haubner, Roland

doi:10.1016/j.corsci.2018.04.042

Cited by 26 publications

(19 citation statements)

References 13 publications

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“…During earlier experiments, corrosion resistance of several steels and nickelbased alloys was investigated in H 2 S-and HCl-containing atmosphere at high temperatures [4][5][6]. The potential for oxidation in the gas mixture was low because CO 2 and no O 2 were present.…”

Section: Introductionmentioning

confidence: 99%

Model About the Course of Corrosion Reactions of Austenitic Steels in H2S-, HCl- and CO2-Containing Atmospheres at 680 °C

et al. 2018

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Material selection for thermal cracking processes of anthropogenic resources is challenging. H 2 S and HCl are formed, and corrosion occurs at high temperatures. Several steels were investigated in the past. In all cases, corrosion layers were characteristically structured. On top, large chromium sulfide crystals are located, followed by a Cr 2 O 3 layer, followed by a layer enriched in chlorine and nickel. In this paper, we propose a model on the course of the corrosion reactions. By considering the water-gas shift reaction as well as the influence of H 2 S, the layer formation can be explained. As an example S31400, 240 h corrosion time at 680 °C was chosen.

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Section: Introductionmentioning

confidence: 99%

Model About the Course of Corrosion Reactions of Austenitic Steels in H2S-, HCl- and CO2-Containing Atmospheres at 680 °C

et al. 2018

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“…Grabke et al have shown that the values of ΔG for chromium chloride (CrCl 2 ), iron chloride (FeCl 2 ) and nickel chloride (NiCl 2 ) are −286 kJ mol −1 , −232 kJ mol −1 , and −174 kJ mol −1 at 600 °C . Hence Ni is an important element to protect an alloy against chloride bearing environments, which has also been confirmed by other studies . As already mentioned, the volatility of nickel chloride is lower than that of chromium chloride or chromium oxychloride .…”

Section: Discussionmentioning

confidence: 55%

The influence of NaCl and CaCl₂ induced high temperature corrosion on the aqueous corrosion resistance of stainless steels

Mori

Vidic

Bucher

et al. 2019

Materials & Corrosion

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The corrosion resistance of the steel grades 1.4509 and 1.4301 against sodium and calcium chloride, at 650 and 750 °C is investigated by means of cyclic exposure tests (CETs) in dry air. The formation of chromates as well as volatile metal chlorides and oxychlorides leads to non‐protective oxide scales on both steel grades. At 650 and 750 °C and in presence of a salt layer the alloy 1.4301 shows a higher corrosion resistance than the material 1.4509. At 750 °C and in presence of salt, the surface of the steel grade 1.4301 is transformed from a face centered cubic (fcc) to a body centered cubic (bcc) lattice, due to corrosion induced de‐alloying. The surfaces of both tested materials deplete in chromium, especially at 750 °C. Consequently, the corrosion resistance of the materials exposed to CET decreases sharply in aqueous corrodants.

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“…The corrosion resistance testing of duplex steels has become the subject of many research programs. Various research computational methods were used and led to the exploration of possible applications [4][5][6][7][8][9][10][11][12][13][14][15][16]. However, the knowledge, despite its extensive discussion in the scientific community, has not always been effectively translated into practical recommendations for investors and designers.…”

Section: Introductionmentioning

confidence: 99%

“…Figure11. Pitting corrosion mechanism of duplex steel when exposed to chloride attack (according to[21]).…”

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Duplex Steels Used in Building Structures and Their Resistance to Chloride Corrosion

Maślak

Stankiewicz

Ślązak³

2021

Materials

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Welded structures made of duplex steels are used in building applications due to their resistance to local corrosion attack initiated by chlorides. In this paper, the material and technological factors determining the corrosion resistance are discussed in detail. Furthermore, recommendations are formulated that allow, in the opinion of the authors, to obtain a maximum corrosion resistance for welded joints. The practical aspects of corrosion resistance testing are also discussed, based on the results of qualification tests. This work is of a review character. The conclusions and practical recommendations are intended for contractors and investors of various types of structures made of the duplex steel. The recommendations concern the selection and use of duplex steels, including the issues of metallurgy, welding techniques, and corrosion protection.

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Comparison of the high-temperature chloride-induced corrosion between duplex steel and Ni based alloy in presence of H2S

Cited by 26 publications

References 13 publications

Model About the Course of Corrosion Reactions of Austenitic Steels in H2S-, HCl- and CO2-Containing Atmospheres at 680 °C

Model About the Course of Corrosion Reactions of Austenitic Steels in H2S-, HCl- and CO2-Containing Atmospheres at 680 °C

The influence of NaCl and CaCl₂ induced high temperature corrosion on the aqueous corrosion resistance of stainless steels

Duplex Steels Used in Building Structures and Their Resistance to Chloride Corrosion

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Comparison of the high-temperature chloride-induced corrosion between duplex steel and Ni based alloy in presence of H2S

Cited by 26 publications

References 13 publications

Model About the Course of Corrosion Reactions of Austenitic Steels in H2S-, HCl- and CO2-Containing Atmospheres at 680 °C

Model About the Course of Corrosion Reactions of Austenitic Steels in H2S-, HCl- and CO2-Containing Atmospheres at 680 °C

The influence of NaCl and CaCl2 induced high temperature corrosion on the aqueous corrosion resistance of stainless steels

Duplex Steels Used in Building Structures and Their Resistance to Chloride Corrosion

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The influence of NaCl and CaCl₂ induced high temperature corrosion on the aqueous corrosion resistance of stainless steels