Influence of Soil Moisture Content on the Corrosion Behavior of X60 Steel in Different Soils

Noor, Ehteram A.; Al-Moubaraki, Aisha H.

doi:10.1007/s13369-014-1135-2

Cited by 51 publications

(34 citation statements)

References 14 publications

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“…Among the various factors, the acidity (pH) and moisture contents of soil are stated as the most important key factors influencing corrosion of buried pipes as per the latest comprehensive reviews [5][6][7]. The influence of soil chemical properties such as pH on the buried pipes has been investigated by using the simulated soil solutions by many researchers to avoid the complex and heterogeneous soil structure by using varying quantities of acid [11][12][13]. Most studies on real soils are on the effect of moisture content and corresponding corrosion of buried pipes in laboratories [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Influence of Chemical Properties of Soil on the Corrosion Morphology of Carbon Steel Pipes

Wasim¹,

Shoaib²

2019

Metals in Soil - Contamination and Remediation

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Corrosive soils are responsible for the deterioration of buried underground utilities such as buried steel pipes. Frequent pipe failures are reported due to corrosive soil globally. Although soil's corrosion phenomenon has been understood and identified long time ago, pipe failures due to corrosive soil are uncontrollable and unavoidable despite the use of protective coatings and techniques such as cathodic protection. Therefore, it is essential to review the causes of soil's corrosivity for the protection of steel pipes. This chapter demonstrates the influence of varying moisture and chloride contents of soils on the corrosion of coated and uncoated steel pipes. Carbon steel specimens (coated and uncoated) were buried in soils of 20, 40, 60, and 80 wt.% moisture content, respectively, while the chloride concentration introduced in soil was 0, 5, and 10 wt.%, respectively. Through the analysis of experiments, it is revealed that the corrosion rate of pipes buried in soil increases with increase in moisture content up to critical moisture and chloride values. The influence of soil's moisture and chloride on the corrosion products formed on steel pipes was investigated and comprehensively explained in this chapter. Authors believe that the knowledge presented in this chapter can be applied to other structures or utilities buried in corrosive soils.

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Section: Introductionmentioning

confidence: 99%

Influence of Chemical Properties of Soil on the Corrosion Morphology of Carbon Steel Pipes

Wasim¹,

Shoaib²

2019

Metals in Soil - Contamination and Remediation

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“…During mild steel dissolution reaction, FeOH and [FeClOH]are formed as intermediates. These intermediates are con verted to γ Fe 2 O 3 and γ FeOOH and form oxide layer [65][66][67]. The intensity of oxygen molecules is higher than the carbon (Table 7) atom indicating presence of higher amount of iron oxides in the inhibitor film.…”

Section: The Results Of Surface Analysis (Sem Edx)mentioning

confidence: 99%

Corrosion inhibition of st37 steel in geothermal fluid by Quercus robur and pomegranate peels extracts

Büyüksağiş

Dilek

Kargıoğlu

2015

Prot Met Phys Chem Surf

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Plant extracts have become important as an environmentally acceptable, readily available and renewable source of wide range of inhibitors. Tannins, a class of natural, non toxic and biodegradable polyphenolic compounds, extracted from plant sources are already used as corrosion inhibitors in aqueous media. This study investigates the inhibiting effect of Quercus robur and pomegranate peels extracts on st37 steel corrosion in geothermal fluid using the Tafel polarization method. It was found that the extracts act as good corrosion inhibitors for geothermal fluid. 250 ppm of Quercus robur oak extract was seen to have 90% corrosion inhibition efficiency. The values of pH, potential, conductivity, total hardness and Ca 2+ hardness, dissolved solid substance (TDS) and salinity of geothermal fluid were analyzed before and after the addition of extract into it. According to these analyses, increasing pH level more than 5 indicates that corrosion con structive aggressive ions (H + ) decrease. Furthermore the decrease of conductivity values as a result of the decrease of inhibitor concentration shows that corrosion slows down. Ryznar and Langelier Indexes are cal culated for AF11 well, reinjection and collected pools. The values of indexes show that geothermal fluid is corrosive and scale properties.

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“…The results show that VA modified both the anodic and cathodic reactions, and displaced the corrosion potential (E corr ) slightly towards cathodic values in 1 M HCl and slightly towards the anodic values in 0.5 M H 2 SO 4 while reducing both the cathodic and anodic current densities as well as the reaction current density (i corr ). VA thus functioned as a mixedtype corrosion inhibitor in both 1 M HCl and 0.5 M H 2 SO 4 [36][37]. The inhibition efficiency (IE) from the potentiodynamic polarization experiments was quantified as: (2) Where i corr(bl) and i corr(inh) represent the corrosion current density in the absence and presence of the inhibitor, respectively.…”

Section: Potentiodynamic Polarization Resultsmentioning

confidence: 99%

Exploiting the Anticorrosion Effects of <italic>Vernonia Amygdalina</italic> Extract for Protection of Mild Steel in Acidic Environments

Adindu

Ogukwe

Eze

et al. 2016

J. Electrochem. Sci. Technol

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The corrosion protection of mild steel in 1 M HCl and 0.5 M H 2 SO 4 solutions by ethanol extract of Vernonia amygdalina (VA) was studied using a combination of experimental and computational methods. The obtained results revealed that VA reduced the corrosion of mild steel in both environments and inhibition efficiency increased with VA concentration but decreased with prolonged exposure. Electrochemical results showed that the extract functioned via mixed corrosion inhibiting mechanism by adsorption of some organic constituents of the extract on the metal/acid interface. Findings from infrared spectroscopy and electron microscopy all confirmed that VA retarded mild steel corrosion in both 1 M HCl and 0.5 M H 2 SO 4 through an adsorption process. The adsorption behavior of selected constituents of the extract was modeled using density functional theory computations.

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Influence of Soil Moisture Content on the Corrosion Behavior of X60 Steel in Different Soils

Cited by 51 publications

References 14 publications

Influence of Chemical Properties of Soil on the Corrosion Morphology of Carbon Steel Pipes

Influence of Chemical Properties of Soil on the Corrosion Morphology of Carbon Steel Pipes

Corrosion inhibition of st37 steel in geothermal fluid by Quercus robur and pomegranate peels extracts

Exploiting the Anticorrosion Effects of <italic>Vernonia Amygdalina</italic> Extract for Protection of Mild Steel in Acidic Environments

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Influence of Soil Moisture Content on the Corrosion Behavior of X60 Steel in Different Soils

Cited by 51 publications

References 14 publications

Influence of Chemical Properties of Soil on the Corrosion Morphology of Carbon Steel Pipes

Influence of Chemical Properties of Soil on the Corrosion Morphology of Carbon Steel Pipes

Corrosion inhibition of st37 steel in geothermal fluid by Quercus robur and pomegranate peels extracts

Exploiting the Anticorrosion Effects of &lt;italic&gt;Vernonia Amygdalina&lt;/italic&gt; Extract for Protection of Mild Steel in Acidic Environments

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Exploiting the Anticorrosion Effects of <italic>Vernonia Amygdalina</italic> Extract for Protection of Mild Steel in Acidic Environments