Evaluation of the corrosion resistance of SA-543 and X65 steels in emulsions containing H2S and CO2 using a novel emulsion flow loop

Zafar, Muhammad Nauman; Rihan, Rihan; Al‐Hadhrami, Luai M.

doi:10.1016/j.corsci.2015.02.013

Cited by 42 publications

(21 citation statements)

References 25 publications

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“…For H 2 S/CO 2 corrosion, the domination of H 2 S corrosion or CO 2 corrosion relies on the ratio of P CO2 /P H2S . In our study, H 2 S corrosion controls the corrosion process because the ratio of P CO2 /P H2S is low …”

Section: Discussionmentioning

confidence: 80%

“…Many scholars demonstrate that the ratio of P CO2 /P H2S influences corrosion behavior. Corrosion behavior of low‐alloy steel in H 2 S/CO 2 conditions is controlled by H 2 S corrosion when that ratio is low …”

Section: Resultsmentioning

confidence: 99%

“…The corrosion behavior of low‐alloy pipeline steel in H 2 S/CO 2 brine condition is different from the corrosion behavior of low‐alloy pipeline steel exposed to single CO 2 or H 2 S brine condition because of their mutual effect. Many studies reveal that the corrosion behavior of low‐alloy pipeline steel in H 2 S/CO 2 brine condition depends on several factors such as chemical compositions, temperature, total pressure, partial pressure and microstructure …”

Section: Introductionmentioning

confidence: 99%

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Corrosion mechanism of low‐alloy steel used for flexible pipe in vapor‐saturated H₂S/CO₂ and H₂S/CO₂‐saturated brine conditions

Liu

Gao

et al. 2018

Materials & Corrosion

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Immersion experiment was used to elucidate the corrosion mechanism of low‐alloy pipeline steel exposed to vapor‐saturated H2S/CO2 and H2S/CO2‐saturated brine conditions in terms of microstructure, corrosion kinetics, corrosion products, surface/cross‐sectional morphology, and elemental distribution. The experimental results demonstrate that the microstructure of designed steel is tempered martensite, and the corrosion rate in H2S/CO2‐saturated brine condition is larger than that in vapor‐saturated H2S/CO2 condition. The main corrosion product in two corrosion conditions is FeS, which shows various crystal structures. The size of corrosion products formed in vapor‐saturated H2S/CO2 condition is smaller than that of corrosion products formed in H2S/CO2‐saturated brine condition, which contributes to the difference of water chemistry in two corrosion conditions. Cr‐rich compounds are primarily formed on the coupons surface of two corrosion conditions. The schematic models of corrosion mechanism in vapor‐saturated H2S/CO2 condition and H2S/CO2‐saturated brine condition are proposed based on experimental results.

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Section: Discussionmentioning

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Corrosion mechanism of low‐alloy steel used for flexible pipe in vapor‐saturated H₂S/CO₂ and H₂S/CO₂‐saturated brine conditions

Liu

Gao

et al. 2018

Materials & Corrosion

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“…The formation kinetics of mackinawite was higher than other FeS species. Mackinawite crystals of H 2 S/CO 2 ‐saturated brine environment are loose, less adherent, and rich in defects . The corrosion ions diffuse through defects, deteriorating corrosion resistance.…”

Section: Corrosion Processesmentioning

confidence: 99%

Comparison of corrosion behaviors of low‐alloy steel exposed to vapor‐saturated H₂S/CO₂ and H₂S/CO₂‐saturated brine environments

Liu

Gao

et al. 2016

Materials & Corrosion

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In this paper, immersion experiments were carried out to compare corrosion behaviors of low‐alloy steel exposed to both H2S/CO2 environments in terms of corrosion kinetics, corrosion products, macroscopic/microscopic surface morphology, cross‐section morphology, and elemental distribution. The experimental results demonstrated that the corrosion kinetics of both the corrosion environments was similar. The distinctive corrosion environment accelerated the formation of different corrosion products. The corrosion products of vapor‐saturated H2S/CO2 environment were mackinawite, cubic iron sulfide, and greigite, while, the ones of H2S/CO2‐saturated brine environment were mackinawite and cubic iron sulfide. The surface formation process was also similar. The vapor‐saturated H2S/CO2 environment promoted the formation of fine crystals compared with H2S/CO2‐saturated brine environment. Molybdenum accumulated in the inner layer in both the corrosion environments. Two schematic models of corrosion process are proposed based on the experimental data.

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“…9 As a countermeasure, replacement of the carbon steel with low Cr-bearing alloy steel, which boasts an excellent performance to price ratio and improved CO 2 corrosion resistance, has been suggested because trace amounts of Cr element can effectively prevent FAC. [10][11][12] Jiang et al 13,14 reported that the addition of Cr generates amorphous products in a rust layer, and Cr is suitable for improving the corrosion resistance of low alloy steel to ow-accelerated corrosion caused by the inhibition of a cathodic reaction in an O 2 -containing environment. A large number of studies have shown that the amorphous product lm will form on the surface of low Cr steel, with fewer pores and better protection.…”

Section: Introductionmentioning

confidence: 99%

Effect of chromium on the corrosion behaviour of low Cr-bearing alloy steel under an extremely high flow rate

Wang

Li³

et al. 2020

RSC Adv.

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Evaluation of the corrosion resistance of SA-543 and X65 steels in emulsions containing H2S and CO2 using a novel emulsion flow loop

Cited by 42 publications

References 25 publications

Corrosion mechanism of low‐alloy steel used for flexible pipe in vapor‐saturated H₂S/CO₂ and H₂S/CO₂‐saturated brine conditions

Corrosion mechanism of low‐alloy steel used for flexible pipe in vapor‐saturated H₂S/CO₂ and H₂S/CO₂‐saturated brine conditions

Comparison of corrosion behaviors of low‐alloy steel exposed to vapor‐saturated H₂S/CO₂ and H₂S/CO₂‐saturated brine environments

Effect of chromium on the corrosion behaviour of low Cr-bearing alloy steel under an extremely high flow rate

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Evaluation of the corrosion resistance of SA-543 and X65 steels in emulsions containing H2S and CO2 using a novel emulsion flow loop

Cited by 42 publications

References 25 publications

Corrosion mechanism of low‐alloy steel used for flexible pipe in vapor‐saturated H2S/CO2 and H2S/CO2‐saturated brine conditions

Corrosion mechanism of low‐alloy steel used for flexible pipe in vapor‐saturated H2S/CO2 and H2S/CO2‐saturated brine conditions

Comparison of corrosion behaviors of low‐alloy steel exposed to vapor‐saturated H2S/CO2 and H2S/CO2‐saturated brine environments

Effect of chromium on the corrosion behaviour of low Cr-bearing alloy steel under an extremely high flow rate

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Product

Resources

About

Corrosion mechanism of low‐alloy steel used for flexible pipe in vapor‐saturated H₂S/CO₂ and H₂S/CO₂‐saturated brine conditions

Corrosion mechanism of low‐alloy steel used for flexible pipe in vapor‐saturated H₂S/CO₂ and H₂S/CO₂‐saturated brine conditions

Comparison of corrosion behaviors of low‐alloy steel exposed to vapor‐saturated H₂S/CO₂ and H₂S/CO₂‐saturated brine environments