Effect of chloride ion content on pitting corrosion of dispersion-strengthened-high-strength steel

Li, Ping; Du, Min

doi:10.1016/j.corcom.2022.03.005

Cited by 43 publications

(7 citation statements)

References 40 publications

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“…The oxygen content of the specimens decreased in the order WEC (49.849%) > MX/WEC (31.124%) > PMPF/WEC (29.805%) > RMPF/WEC (23.584%) > VMPF/WEC (7.360%), which highlights the outstanding corrosion resistance of VMPF/WEC. The presence of Cl – ions promoted the corrosion reaction, therefore accelerating the dissolution of the substrate. , The steel protected by VMPF/WEC possessed a low chlorine content (0.043%), thereby representing an 88.22% reduction compared with the steel protected by WEC (0.365%). This decrease was attributed to the labyrinth effect resulting from parallel-arranged MPF and the repulsion of chloride ions of PDDA. , In summary, the parallel-arranged MPF in WEC effectively inhibited the penetration of corrosive media (H 2 O, Cl – ), which led to exceptional corrosion resistance of the nanocomposite coating.…”

Section: Resultsmentioning

confidence: 99%

Self-Oriented Functionalized MXene with Excellent Antioxidant Properties for Enhancing Anticorrosion Properties of Waterborne Epoxy Resin

Fan,

Wu,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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A MXene/poly(dimethyl diallyl ammonium chloride) (PDDA)/Fe 3 O 4 (MPF) hybrid with exceptional oxidation resistance was synthesized via electrostatic self-assembly. Subsequently, a magnetic field was utilized to construct the parallelaligned MPF within the waterborne epoxy coating (WEC). This parallel-aligned hybrid could significantly hinder the penetration of the corrosive ions. The electrochemical impedance spectroscopy (EIS) results revealed that the WEC containing parallel-aligned MPF (VMPF/WEC) exhibited the highest low-frequency impedance modulus (|Z 0.01 Hz |) among all coatings, which was 3 orders of magnitude higher than that of WEC in the initial stage of corrosion. After 42 days of the corrosion, the |Z 0.01 Hz | of VMPF/ WEC surpassed that of WEC by more than 2 orders of magnitude, thereby indicating the exceptional long-term corrosion resistance of VMPF/WEC. This work proposed novel ideas for constructing high-performance anticorrosion WECs.

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Section: Resultsmentioning

confidence: 99%

Self-Oriented Functionalized MXene with Excellent Antioxidant Properties for Enhancing Anticorrosion Properties of Waterborne Epoxy Resin

Fan,

Wu,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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“…However, when the chloride concentration surpasses D2, the weight loss rate begins to rise again, which may be attributed to the protective effect of the rust layer. Previous studies [14][15][16] have indicated the presence of a critical concentration of chloride ions. Once the chloride ion concentration reaches a certain level, it causes a shift in the weight loss rate.…”

Section: Weightlessness Rate and Surface Morphology Analysismentioning

confidence: 96%

Corrosion and wear behavior of slag cleaning chain and influence of Cr, Ni and Mo under different chloride ion concentration

Bai,

Ma,

Wang

et al. 2024

Matéria (Rio J.)

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To address the issue of corrosive wear resulting from the addition of desulphurization wastewater into the wet slag removal system, this study investigated the corrosive wear behavior of chain steel (specifically 17NiCrMo6 steel) in desulphurization wastewater with varying chloride concentrations. Weight loss, microphase characterization, and electrochemical testing methods were employed for analysis. The findings indicate that as the chloride concentration increases, the weight loss rates for both pure corrosion and corrosive wear exhibit a pattern of initial increase, followed by a decrease, and then another increase. This trend can be attributed to the fact that as the chloride concentration rises, the corrosion products become denser, thereby increasing the difficulty of the corrosion reaction.

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“…Once the primary cell is formed, the dissolved chloride forms in the hole, and the passive film formed on the metal surface cannot be exchanged. As a result, the concentration of chloride in the hole is increasing, the acidity is gradually enhanced, and the pitting holes are deepening, eventually forming multiple small and deep pitting holes [17] . H 2 S can accelerate the anodic dissolution of 316L stainless steel, destroy the passive film, and cause pitting corrosion.…”

Section: Corrosion Perforation Mechanism Analysismentioning

confidence: 99%

Failure analysis of 316L stainless steel corrugated pipe

Tao,

Hu,

Dai

2024

J. Phys.: Conf. Ser.

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316L stainless steel is a kind of austenitic stainless steel with good corrosion resistance, widely used in power plants, refineries, chemical plants, etc. However, the metal bellows manufactured by 316L stainless steel have caused a corrosion perforation phenomenon in the Cl−environment, which will affect the safety of equipment operation. In this paper, by observing the corrosion morphology, examining and analyzing the material composition, corrosion products, working conditions, and production process of the metal bellows of a power generation company. The results show that the main cause of failure of stainless steel corrugated pipe is pitting corrosion perforation caused by high concentration chloride aqueous solution in the medium.

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Effect of chloride ion content on pitting corrosion of dispersion-strengthened-high-strength steel

Cited by 43 publications

References 40 publications

Self-Oriented Functionalized MXene with Excellent Antioxidant Properties for Enhancing Anticorrosion Properties of Waterborne Epoxy Resin

Self-Oriented Functionalized MXene with Excellent Antioxidant Properties for Enhancing Anticorrosion Properties of Waterborne Epoxy Resin

Corrosion and wear behavior of slag cleaning chain and influence of Cr, Ni and Mo under different chloride ion concentration

Failure analysis of 316L stainless steel corrugated pipe

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