Corrosion behaviour of electrodeposited nanocrystalline nickel-iron (NiFe) alloys in dilute H2SO4

Monaco, L. Lo; Avramovic-Cingara, G.; Palumbo, G.; Erb, U.

doi:10.1016/j.corsci.2017.10.018

Cited by 17 publications

(4 citation statements)

References 42 publications

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“…Firstly, the open circuit potential (E ocp ) was monitored in 3.5 wt% NaCl solution for 30 min, as shown in Figure 7, in order to get a stable potential with time before conducting the corrosion tests. 42 Since E ocp represented the corrosion susceptibility, it could be seen that the E ocp values for the pure Zn layer decreased by about 60mV over times, while that of the Zn-Gr composite layers only decreased by about 20mV. These results indicated that the incorporation of graphene in the Zn plating layer improved its corrosion stability.…”

Section: Resultsmentioning

confidence: 88%

Influence of Graphene Oxide Content on the Zn-Gr Composite Layer Prepared by Pulse Reverse Electro-plating

Song

Liu

et al. 2018

J. Electrochem. Soc.

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The Zinc (Zn)-graphene (Gr) composite layer was prepared successfully by using a pulse reverse electro-plating method on the iron substrate. Effect of GO content in the electrolyte on the microstructures of the composite layer and the corrosion behaviors in the 3.5 wt% NaCl solution were also investigated in detail by using scanning electron microscope (SEM), X-Ray Diffraction (XRD) and a series of electrochemical measurements. The results revealed that: 1) GO can be reduced into Gr during the co-deposition of electro-plating; 2) adding GO in the electrolyte changed the Zn growth mechanism in the composite layer, i.e., gradually transforming from the main preferred orientations of ( 112) and ( 101) crystal planes into ( 103), ( 102) and ( 110) planes 3) there is an optimal GO adding amount in a range 0.3-0.5g/L in the electrolyte, at which the Zn-Gr composite layer exhibited the highest corrosion resistance and corrosion current density just be a hundredth comparing with that of pure Zn layer in simulated seawater environment; 4) the Zn-Gr composite layer is of a strong adhesion with the substrate. The present work is expected to provide basic data for future practical applications in galvanized steel used for corrosion environment.

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Section: Resultsmentioning

confidence: 88%

Influence of Graphene Oxide Content on the Zn-Gr Composite Layer Prepared by Pulse Reverse Electro-plating

Song

Liu

et al. 2018

J. Electrochem. Soc.

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“…When SS316L has both a strong corrosion resistance and low corrosion rate. This is a result of the synergic effect of Mo, Fe, Cr and S. Because of the synergic effect of Mo, Fe, Cr and S in SS316L, the synergic effect of Cr and Fe was less effective than the effect of adding 16 wt% Cr in SS304 [11]. The passive layer stability of stainless steels decreases in the presence of less than 1% of Mo by weight of material and increases sequentially when Mo >1% to 3% by weight [12].…”

Section: Polarization Curves (Icorr Ecorr and Corrosion Rate)mentioning

confidence: 99%

“…A schematic drawing of the SS316L specimen exposed in the concentrated H2SO4 acid solution is shown in Figure 3(c). The reactions that occurred can be represented by Equations (3)(4)(5)(6)(7)(8)(9)(10)(11) and Equation (12), respectively [3]: 2Mo + 3H2O → Mo2O3 + 3H2 Passive film formation (12) The acid solution of the SS316L specimen has no precipitation and is clear throughout the experiment. In dynamic equilibrium, the passive film interface on the SS316L is formed and decomposed competitively all the time.…”

Section: Corrosion Mechanismmentioning

confidence: 99%

Study of corrosion properties of carbon steel, 304 and 316L stainless steels in sulfuric acid and their degradation products

KHAMME,

SAKDANUPHAB

2023

J Met Mater Miner

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In this study, corrosion properties of carbon steel and stainless steels, and degradation of sulfuric acid by the corrosion mechanism are presented. Carbon steel (CS), 304 stainless steel (SS304), and 316L stainless steel (SS316L) specimens were analyzed through their electrochemical response by using a potentiostat measurement. The specimens were submerged in concentrated 98 wt.% of H2SO4 acid for 0 day to 60 day. The degradation of H2SO4 was determined by its volume change, turbidity, and color due to the corrosion mechanism. Corrosion rate of CS, SS304 and SS316L specimens are 43.237 mm/year, 0.420 mm/year and 0.086 mm/year, respectively. After 60 days, the weight-loss of CS, SS304 and SS316L specimens are 48 wt%, 33 wt% and 0.1 wt%, respectively. Corrosion resistance of the materials are influenced by the passive oxide layer that forms on its surface and associated with electrochemical activity or semiconductive composition. The degradation of H2SO4 acid was observed due to the corrosion process of specimens and related to the turbidity and volume increase while the wt% concentration of H2SO4 acid decreases. In order to make material choices that enable continuous and safe operation of the process, it is important to understand the corrosion mechanism changes.

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“…The formation of passive films is one of the key controlling factors of the corrosion resistance in materials. For example, corrosion resistance can be compromised because of unstable passive films in NC Ni [93], whereas Ni-Fe alloys show similar corrosion resistance in both nanoscale and coarse-grained microstructures because of the formation of stable homogenous passive films [94]. There have been few studies on the comparison of corrosion performance between bulk and NC HEAs, but the investigation of specific nanostructures and their effect on corrosion are much more common.…”

Section: Corrosion Resistancementioning

confidence: 99%

Nanostructured high-entropy materials

2020

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Corrosion behaviour of electrodeposited nanocrystalline nickel-iron (NiFe) alloys in dilute H2SO4

Cited by 17 publications

References 42 publications

Influence of Graphene Oxide Content on the Zn-Gr Composite Layer Prepared by Pulse Reverse Electro-plating

Influence of Graphene Oxide Content on the Zn-Gr Composite Layer Prepared by Pulse Reverse Electro-plating

Study of corrosion properties of carbon steel, 304 and 316L stainless steels in sulfuric acid and their degradation products

Nanostructured high-entropy materials

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