Effect of hydrogen peroxide on crack growth rate in X70 pipeline steel in weak acid solution

Bogdanov, Roman; Маршаков, А. И.; Ignatenko, V. E.; Ryakhovskikh, I.V.; Bachurina, Diana

doi:10.1080/1478422x.2016.1277315

Cited by 5 publications

(6 citation statements)

References 22 publications

(53 reference statements)

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“…The repair by replacing even a small part of these pipes will lead to a reduction in the total volume of UGSS pipeline overhaul due to the specific increase in the individual sections repair cost [10][11][12]. At the same time, the degree of defects' danger, the depth of which is less than 10-15% of the wall thickness, under condition that access of corrosive medium to them is restricted, is determined by many researchers as insignificant [13][14][15][16]. At the present time, there are methods of repairing the pipelines polymer insulation, which do not allow the cracks to develop and threaten the reliability of pipelines for a long time [17,18].…”

Section: Introductionmentioning

confidence: 99%

The Analysis of the Influence of Various Factors on the Development of Stress Corrosion Defects in the Main Gas Pipeline Walls in the Conditions of the European Part of the Russian Federation

Afanasyev

Melnikov

Konovalov

et al. 2018

International Journal of Corrosion

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This paper considers the factors influencing the formation and development of stress corrosion defects detected during the inspection and overhaul of the main gas pipeline section. The surveyed gas pipeline is made of large diameter steel pipes made by controlled rolling, produced by various companies, with the predominance of pipes produced by the Khartsyzsk Pipe Plant (KhPP). The correlation between the geometric parameters of defects is described, which makes it possible to estimate the depth of cracks by external parameters. Mechanical tests by cyclic loading of samples containing cracks, based on the site operation data for the last 11 years, showed no crack growth in the absence of a corrosive medium. Micro-X-ray spectral analysis of metal and corrosion products showed no trace of the influence of hydrogen sulphide and nonmetallic inclusions (sulphides) on the development process of SCC. According to the results of the research, the process of development of stress corrosion on the main gas pipelines located in the European part of the Russian Federation is described. The organization operating the gas pipeline is recommended to take into consideration the results of this work during drawing up their repair plan.

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Section: Introductionmentioning

confidence: 99%

The Analysis of the Influence of Various Factors on the Development of Stress Corrosion Defects in the Main Gas Pipeline Walls in the Conditions of the European Part of the Russian Federation

Afanasyev

Melnikov

Konovalov

et al. 2018

International Journal of Corrosion

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“…(1) Static loading [31,32]. Beam samples with a size of 200 × 15 × 3 mm with a preliminarily grown fatigue crack with a depth of 7 mm [31] (Fig. 2), which were fixed in the electrochemical cell with the test solution, were used for static tests (Fig.…”

Section: Bis(triethoxysilyl)ethane (Btese)mentioning

confidence: 99%

Improving the Anticorrosion Characteristics of Polymer Coatings in the Case of Their Modification with Compositions Based on Organosilanes

Петрунин

Gladkikh

Малеева

et al. 2021

Prot Met Phys Chem Surf

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The effect of a series of organosilanes and their mixtures with corrosion inhibitors on the anticorrosion properties of polymer and paint coatings on steel, namely, on the adhesive characteristics of the coatings and corrosion behavior of the metal in the presence of coatings modified with organosilanes, corrosion inhibitors, and their mixtures, is studied. It is shown that mixtures of 1,2,3-benzotriazole (BTA) with vinyltrimethoxysilane (VTMS) or aminoethylaminopropyltrimethoxysilane—diaminosilane (DAS) inhibit the local dissolution and underfilm corrosion of carbon steel, and the potential of local depassivation shifts by 0.3–0.4 V. Here, compact polymer-like layers that are strongly bound to the metal surface are formed on the surface of steel. Corrosion and mechanical tests of the samples of pipe steels with different types of inhibiting compositions are conducted. The effect of the inhibitors on the crack growth under static loading in a model soil electrolyte (pH of 5.5) and on the crack resistance of steel under slow tension in an NS-4 model underfilm electrolyte (pH of 7.0) is evaluated. The tests are performed in media free from and containing hydrogen sulfide. It is shown that the best inhibiting properties are manifested by the mixtures of corrosion inhibitors with organosilanes. Comparative laboratory and bench tests for the adhesive strength, water resistance, and resistance to cathodic detachment of the adhesive junctions obtained upon applying the modified polymer and paint coatings onto the surface of steel are performed. It is found that introducing a mixture of organosilane and a corrosion inhibitor improves the adhesive properties of polymer and paint coatings.

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“…Most studies [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ] have been carried out on SCC in NS4 solutions. However, there is still no well-accepted mechanism for near-neutral-pH SCC.…”

Section: Introductionmentioning

confidence: 99%

“…Mao and Li [ 36 ] proposed that hydrogen plays an important role in the process of SCC for pipeline steel by promoting stress corrosion cracking and anodic dissolution. However, some researchers still believe that the local anodic dissolution of the metal has more effect on crack growth in weakly acidic and neutral electrolytes [ 32 , 33 ]. Bogdanov et al [ 32 ] proposed that the crack growth that occurs in a weakly acidic electrolyte is determined by the metal dissolution process.…”

Section: Introductionmentioning

confidence: 99%

“…However, some researchers still believe that the local anodic dissolution of the metal has more effect on crack growth in weakly acidic and neutral electrolytes [ 32 , 33 ]. Bogdanov et al [ 32 ] proposed that the crack growth that occurs in a weakly acidic electrolyte is determined by the metal dissolution process. Hydrogen indirectly affects crack growth [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Temperature and Applied Potential on the Stress Corrosion Cracking of X80 Steel in a Xinzhou Simulated Soil Solution

2022

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In this research, the stress corrosion cracking (SCC) behavior of X80 pipeline steel in a Xinzhou soil environment at different temperatures and applied potentials was studied with a slow strain rate test (SSRT), potentiodynamic polarization curve measurements, and scanning electron microscopy (SEM). When a higher anodic potential was applied, anodic dissolution occurred at the crack tip and on the crack wall. The cracking mechanism of X80 steel in Xinzhou soil solution is anodic dissolution (AD). At positive cathodic potentials, X80 steel is under an anodic polarization state at the crack tip and under a cathodic polarization state at the crack wall. The SCC of X80 steel is affected by the combined effects of anodic dissolution (AD) and hydrogen embrittlement (HE). At more negative cathodic potentials, both crack tips and crack walls are under cathodic polarization. The SCC of X80 steel is dominated by hydrogen embrittlement (HE). SCC susceptibility has the same variation trend with potentials at different temperatures. The susceptibility to SCC increases notably as the temperature increases at weak cathodic potentials and open circuit potential due to the effect of temperature on the corrosion potential and the diffusion of atoms.

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Effect of hydrogen peroxide on crack growth rate in X70 pipeline steel in weak acid solution

Cited by 5 publications

References 22 publications

The Analysis of the Influence of Various Factors on the Development of Stress Corrosion Defects in the Main Gas Pipeline Walls in the Conditions of the European Part of the Russian Federation

The Analysis of the Influence of Various Factors on the Development of Stress Corrosion Defects in the Main Gas Pipeline Walls in the Conditions of the European Part of the Russian Federation

Improving the Anticorrosion Characteristics of Polymer Coatings in the Case of Their Modification with Compositions Based on Organosilanes

Effects of Temperature and Applied Potential on the Stress Corrosion Cracking of X80 Steel in a Xinzhou Simulated Soil Solution

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