Investigation of Erosion-corrosion of Carbon Steel Elbow in 3.5% Sodium Chloride Containing Quartz

2022 ◽  
pp. ArticleID:220139
Author(s):  
Zongwu Hu ◽  
Keyword(s):  
Sodium Chloride ◽  
Carbon Steel ◽  
Erosion Corrosion

Mechanistic modeling of erosion–corrosion for carbon steel

2017 ◽  
pp. 749-763
Author(s):  
Faisal Mutahhar ◽  
Gusai Aithan ◽  
Erin V. Iski ◽  
Michael W. Keller ◽  
Siamack Shirazi ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Mechanistic Modeling ◽  
Erosion Corrosion

THE INHIBITION EFFECT OF ZINC AND SILICATE IONS ON PITTING CORROSION INDUCED BY CERIUM(III) IONS OF CARBON STEEL IN SODIUM CHLORIDE SOLUTION

2020 ◽  
pp. 2050038
Author(s):  
QIONGWEI LI
Keyword(s):  
Sodium Chloride ◽  
Carbon Steel ◽  
Pitting Corrosion ◽  
Chloride Solution ◽  
Sodium Chloride Solution ◽  
Corrosion Potential ◽  
In Situ Observation ◽  
Inhibition Effect ◽  
Synergistic Inhibition

Pitting corrosion of carbon steel in sodium chloride solution induced by Ce[Formula: see text] and the synergistic inhibition effects of Ce[Formula: see text] and Zn[Formula: see text]/SiO[Formula: see text] were investigated using in-situ observation and electrochemical methods. The results showed that the presence of Ce[Formula: see text] could result in severe pitting corrosion and a positive shift in the corrosion potential. It was found that individual Ce[Formula: see text], Zn[Formula: see text], or SiO[Formula: see text] had low inhibition efficiencies, whereas the combination of Ce[Formula: see text] and Zn[Formula: see text] or SiO[Formula: see text] proved to be highly effective in inhibiting the development of pits in two different ways and in enhancing the corrosion resistance. The pitting corrosion and inhibition mechanisms were discussed based on the results.

scholarly journals Erosion–Corrosion of 30°, 60°, and 90° Carbon Steel Elbows in a Multiphase Flow Containing Sand Particles

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3898 ◽  
Author(s):  
Rehan Khan ◽  
Hamdan H. Ya ◽  
William Pao ◽  
Armaghan Khan
Keyword(s):  
Carbon Steel ◽  
Slug Flow ◽  
Surface Characterization ◽  
Corrosion Mechanism ◽  
Surface Imaging ◽  
Flow Loop ◽  
Erosion Corrosion ◽  
Inner Diameter ◽  
Corrosion Pits ◽  
Microscopic Surface

Erosion–corrosion in flow changing devices as a result of sand transportation is a serious concern in the hydrocarbon and mineral processing industry. In this work, the flow accelerated erosion–corrosion mechanism of 90°, 60°, and 30° long radius horizontal–horizontal (H–H) carbon steel elbows with an inner diameter of 50.8 mm were investigated in an experimental closed-flow loop. For these geometrical configurations, erosion–corrosion was elucidated for erosive slug flow regimes and the extent of material degradation is reported in detail. Qualitative techniques such as multilayer paint modeling and microscopic surface imaging were used to scrutinize the flow accelerated erosion–corrosion mechanism. The 3D roughness characterization of the surface indicates that maximum roughness appears in downstream adjacent to the outlet of the 90° elbow. Microscopic surface imaging of eroded elbow surfaces disseminates the presence of corrosion pits on the exit regions of the 90° and 60° elbows, but erosion scars were formed on the entry regions of the 30° elbow. Surface characterization and mass loss results indicated that changing the elbow geometrical configuration from a small angle to wide angle significantly changed the mechanical wear mechanism of the tested elbows. Moreover, the maximum erosive location was identified at the top of the horizontally-oriented elbow for slug flow.

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