Investigations of the diverse corrosion products on steel in a hydrogen sulfide environment

Bai, Pengpeng; Zheng, Shuqi; Zhao, Hui; Ding, Yu; Wu, Jian; Chen, Changfeng

doi:10.1016/j.corsci.2014.06.048

Cited by 78 publications

(43 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These crystals grow further as a function of test duration, as seen after 28 days. Similar crystal structures were observed by Bai et al [25] in their corrosion products investigation on a carbon steel in a hydrogen sulfide environment.…”

Section: Surface Topology and X-ray Diffraction (Xrd) Measurementssupporting

confidence: 72%

“…Similar crystal structures were observed by Bai et al [25] in their corrosion products investigation on a carbon steel in a hydrogen sulfide environment. XRD measurements allowed further identification of the corrosion products.…”

Section: Surface Topology and X-ray Diffraction (Xrd) Measurementssupporting

confidence: 72%

“…In Figure 2, XRD patterns of the corrosion products that were formed after 14 and 28 days in the test solution on the low Mo (A) and high Mo materials are shown, as well as the XRD pattern of the corrosion product residue that was recovered from the bottom of the cell after the test. On the surfaces of both materials, similar corrosion products were found, namely mackinawite (FeS1−x), which was in agreement with the general assumption that mackinawite was the first formed corrosion product in an H2S environment under ambient conditions [5,25,26]. The increasing intensity of the major diffraction peak of mackinawite, the {001} reflection, as a function of the test duration, indicated that a larger degree of mackinawite is formed in a preferential orientation.…”

Section: Surface Topology and X-ray Diffraction (Xrd) Measurementssupporting

confidence: 71%

“…According to Bai et al [25], troilite is generated outside the iron-rich mackinawite, because the unbroken mackinawite layer prevents the diffusion of iron ions towards the solid-liquid interface. Since the troilite was generated at the outer surface of the material, this phase will easily be removed from the sample surface during the test and end up as residue at the bottom of the cell.…”

Section: Surface Topology and X-ray Diffraction (Xrd) Measurementsmentioning

confidence: 99%

See 3 more Smart Citations

FeS Corrosion Products Formation and Hydrogen Uptake in a Sour Environment for Quenched & Tempered Steel

Wallaert

Depover

Graeve

et al. 2018

Metals

View full text Add to dashboard Cite

Surface corrosion product formation is one of the important factors affecting the corrosion rate and hydrogen uptake in a H 2 S environment. However, it is still unclear how the base material composition will affect the corrosion products that are generated, and consequently their impact on the corrosion rate. In this paper, corrosion product formation and the impact of the Mo content of the base material on the composition of the corrosion products and hydrogen absorption in a sour environment was investigated. The corrosion layer was composed of a double layered mackinawite (FeS 1−x ) structure, which was enriched with molybdenum and chromium. The layers were formed via two different mechanisms, i.e., the inner layer was created via a general oxide film formation corrosion mechanism, whereas the upper layer was formed by a precipitation mechanism. The presence of this double corrosion layer had a large influence on the amount of diffusible hydrogen in the materials. This amount decreased as a function of contact time with the H 2 S saturated solution, while the corrosion rate of the materials shows no significant reduction. Therefore, the corrosion products are assumed to act as a physical barrier against hydrogen uptake. Mo addition caused a decrease in the maximal amount of diffusible hydrogen.

show abstract

Section: Surface Topology and X-ray Diffraction (Xrd) Measurementssupporting

confidence: 72%

Section: Surface Topology and X-ray Diffraction (Xrd) Measurementssupporting

confidence: 72%

Section: Surface Topology and X-ray Diffraction (Xrd) Measurementssupporting

confidence: 71%

Section: Surface Topology and X-ray Diffraction (Xrd) Measurementsmentioning

confidence: 99%

See 2 more Smart Citations

FeS Corrosion Products Formation and Hydrogen Uptake in a Sour Environment for Quenched & Tempered Steel

Wallaert

Depover

Graeve

et al. 2018

Metals

View full text Add to dashboard Cite

show abstract

“…Figure 3 shows the SEM images of corrosion product films formed under varying immersion time. After 24-hour immersion time, a uniform layer of corrosion product, consisting of small tetragonal mackinawite, covered the surface [29]. As shown in Figure 3(a), this thick corrosion layer is loose and full of blister and cracks, causing the corrosion rate to accelerate by increasing the diffusion of electrochemical reaction species such as Fe 2+ through the alloy surface.…”

Section: Effect Of Immersion Time On the Corrosion Mechanism Andmentioning

confidence: 93%

Electrochemical and Microstructural Analysis of FeS Films from Acidic Chemical Bath at Varying Temperatures, pH, and Immersion Time

Khaksar

Whelan

Shirokoff

2016

International Journal of Corrosion

View full text Add to dashboard Cite

The corrosion resistance and corrosion products of 4130 alloy steel have been investigated by depositing thin films of iron sulfide synthesized from an acidic chemical bath. Tests were conducted at varying temperatures (25 ∘ C-75 ∘ C), pH levels (2-4), and immersion time (24-72 hours). The corrosion behavior was monitored by linear polarization resistance (LPR) method. X-ray Diffraction (XRD), Energy Dispersive X-ray (EDX) spectroscopy, and Scanning Electron Microscopy (SEM) have been applied to characterize the corrosion products. The results show that, along with the formation of an iron sulfide protective film on the alloy surface, increasing temperature, increasing immersion time, and decreasing pH all directly increase the corrosion rate of steel in the tested experimental conditions. It was also concluded that increasing temperature causes an initial increase of the corrosion rate followed by a large decrease due to transformation of the iron sulfide crystalline structure.

show abstract

Corrosion Inhibitors for Sour Oilfield Environment (H₂SCorrosion)

Umoren

Solomon

Saji

2020

Corrosion Inhibitors in the Oil and Gas Industry

View full text Add to dashboard Cite

Lower-grade steel materials are the most commonly used construction materials for oil and gas wells due to their low cost and high performance. However, they are susceptible to corrosion when they come in contact with corrosive environments that are highly acidic. In oil wells, particularly deep oil wells, hydrogen sulfide (H2S) is commonly found. The dissolution of H2S gas in produced water makes the fluid corrosive. The use of corrosion inhibitors is perhaps the most practical and costeffective means of controlling corrosion of low carbon steels in the sour environment. In this chapter, typical corrosion inhibitors used in oil and gas fields to control the internal corrosion of oilfield equipment caused by H2S are being examined. The inhibitors found to be effective are polar functional compounds, with many being based on nitrogen-containing compounds, such as amines, imidazolines, and quaternary ammonium salts. Drawbacks of these compounds in practical applications and potentials of future developments are discussed.

show abstract

Investigations of the diverse corrosion products on steel in a hydrogen sulfide environment

Cited by 78 publications

References 43 publications

FeS Corrosion Products Formation and Hydrogen Uptake in a Sour Environment for Quenched & Tempered Steel

FeS Corrosion Products Formation and Hydrogen Uptake in a Sour Environment for Quenched & Tempered Steel

Electrochemical and Microstructural Analysis of FeS Films from Acidic Chemical Bath at Varying Temperatures, pH, and Immersion Time

Corrosion Inhibitors for Sour Oilfield Environment (H₂SCorrosion)

Contact Info

Product

Resources

About

Investigations of the diverse corrosion products on steel in a hydrogen sulfide environment

Cited by 78 publications

References 43 publications

FeS Corrosion Products Formation and Hydrogen Uptake in a Sour Environment for Quenched & Tempered Steel

FeS Corrosion Products Formation and Hydrogen Uptake in a Sour Environment for Quenched & Tempered Steel

Electrochemical and Microstructural Analysis of FeS Films from Acidic Chemical Bath at Varying Temperatures, pH, and Immersion Time

Corrosion Inhibitors for Sour Oilfield Environment (H2SCorrosion)

Contact Info

Product

Resources

About

Corrosion Inhibitors for Sour Oilfield Environment (H₂SCorrosion)