Characterization of the passive properties of 254SMO stainless steel in simulated desulfurized flue gas condensates by electrochemical analysis, XPS and ToF-SIMS

Dou, Yunpeng; Han, Sike; Wang, Liwei; Wang, Xin; Cui, Zhongyu

doi:10.1016/j.corsci.2019.108405

Cited by 87 publications

(19 citation statements)

References 52 publications

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“…This could be due to the presence of Fe 2 O 3 or a Fe-containing spinel. 5,24 Since E CORR is dependent on the kinetics of the anodic and cathodic half-reactions, this trend could indicate either increased anodic or decreased cathodic reaction kinetics.…”

Section: Resultsmentioning

confidence: 99%

“…7C) the lower passive current in higher-Mo(W) alloys demonstrates that the Mo(W) content is crucial in sustaining passivity and in suppressing the events which initiate localized film breakdown. 14,[20][21][22][23][24][25][26]29,[61][62][63] The ability of Mo to enhance the passivity of Fe-based alloys has been explained in terms of a bipolar model 29 with an outer layer Mooxide protecting an inner Cr III barrier layer. It was proposed that the outer layer contained anionic Mo species (e.g.…”

Section: Discussionmentioning

confidence: 99%

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Investigating the Influence of Cr and Mo Additions to Commercial Ni-Based Alloys Exposed to Neutral and Acidic Chloride Solutions

Henderson

Almusned

Momeni

et al. 2020

J. Electrochem. Soc.

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The corrosion behaviour of four commercially available Ni-based alloys is presented for both natural and potential-controlled corrosion in chloride solutions. Electrochemical evidence suggests a balance of Cr and Mo is essential to maintaining passive film stability in chloride solutions, especially those in which acidic conditions may develop. In near-neutral solutions, increased Cr content results in lower corrosion rates and improved passive properties; however, an increase in Cr content above 15 wt.% provided only minor additional benefits. In acidic solutions, Mo content is essential to corrosion resistance and imparts two major benefits: increased film stability and rapid repassivation of breakdown events. Since localized corrosion and the critical chemistry which accompanies these processes are of concern in many chloride-containing applications, a delicate balance of Cr and Mo must be considered; although optimal concentrations have yet to be determined.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Investigating the Influence of Cr and Mo Additions to Commercial Ni-Based Alloys Exposed to Neutral and Acidic Chloride Solutions

Henderson

Almusned

Momeni

et al. 2020

J. Electrochem. Soc.

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“…The CoCrFeNi alloy was reported to have good anti-corrosion properties due to the formation of a protective oxide film rich in Cr species [18]. Generally, for conventional alloys containing chromium, such as stainless steel and Ni-base alloys, a high corrosion resistance is provided by the Cr-rich oxide layer playing the role of a barrier against the attack of aggressive ions from the environment [21][22][23][24][25]. The impact of other elements at high contents (Co and Mn) in the bulk alloys has been rarely studied.…”

Section: Introductionmentioning

confidence: 99%

Study of the surface oxides and corrosion behaviour of an equiatomic CoCrFeMnNi high entropy alloy by XPS and ToF-SIMS

et al. 2020

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XPS and ToF-SIMS analysis have been combined with electrochemical measurements to determine the corrosion behavior of the equiatomic CoCrFeMnNi high entropy alloy. An XPS methodology based on analysis of the 3p core level spectra was developed to determine the composition and thickness of oxide films. Both native oxide (∼1.4nm) and passive films (∼ 1.6nm) formed in acidic medium are duplex, comprising Cr and Mn inner layer and Cr/Fe/Co mixture outer layer. No nickel is observed in the oxide layer. The effects of exposure of the native film to sulfuric acid and passivation under anodic polarization have been investigated.

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“…Fe oxides/hydroxides and Cr oxides/hydroxides are the main compounds that constitute the HEA passive film. In general, the increase of Fe 2+ /Fe 3+ ratio is not conducive to the stability of the passive film ( Dou et al, 2020 ; Wang et al, 2021 ). As shown in Figures 8A – A1 , the proportions of Fe 2+ and Fe 3+ in the sterile medium were ~9% and ~77%, while the proportions of Fe 2+ and Fe 3+ in the P. aeruginosa -inoculated medium were ~13% and ~62%, respectively, indicating that the presence of P. aeruginosa promoted the significant increase of Fe 2+ content.…”

Section: Resultsmentioning

confidence: 99%

Microbiologically influenced corrosion of FeCoNiCrMn high-entropy alloys by Pseudomonas aeruginosa biofilm

et al. 2022

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Pseudomonas aeruginosa is widely found in industrial water and seawater. Microbiologically influenced corrosion (MIC) caused by P. aeruginosa is a serious threat and damage to the safe service of steel materials. In this study, the MIC behavior of FeCoNiCrMn high-entropy alloy (HEA) by P. aeruginosa biofilm was investigated in the simulated marine medium. The maximum pitting depth of the HEA coupons in the P. aeruginosa-inoculated medium was ~4.77 μm, which was 1.5 times that in the sterile medium. EIS and potentiodynamic polarization results indicated that P. aeruginosa biofilm reduced the corrosion resistance of the passive film of HEA coupons and promoted its anodic dissolution process. XPS and AES results further demonstrated that P. aeruginosa interfered with the distribution of elements in the passive film and significantly promoted the dissolution of Fe.

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Characterization of the passive properties of 254SMO stainless steel in simulated desulfurized flue gas condensates by electrochemical analysis, XPS and ToF-SIMS

Cited by 87 publications

References 52 publications

Investigating the Influence of Cr and Mo Additions to Commercial Ni-Based Alloys Exposed to Neutral and Acidic Chloride Solutions

Investigating the Influence of Cr and Mo Additions to Commercial Ni-Based Alloys Exposed to Neutral and Acidic Chloride Solutions

Study of the surface oxides and corrosion behaviour of an equiatomic CoCrFeMnNi high entropy alloy by XPS and ToF-SIMS

Microbiologically influenced corrosion of FeCoNiCrMn high-entropy alloys by Pseudomonas aeruginosa biofilm

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