Microstructure Characteristic and Electrochemical Corrosion Behavior of Surface Nano-crystallization Modified Carbon Steel

Cheng, Zhaojun; Song, Dandan; Jiang, Jinyang; Jiang, Jinghua; Ma, Xiaolong; You, Kai; Ma, Aibin

doi:10.1016/s1006-706x(16)30189-3

Cited by 12 publications

(6 citation statements)

References 28 publications

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“…R t describes the interfacial resistance between the steel and the corrosion product layer, which is the final barrier that prevents chlorine ions from reaching the metal surface [ 32 ]. A large capacitive arc diameter means that corrosion products have a strong protective ability, and the degree of metal dissolution reaction is weak [ 19 , 33 , 34 , 35 ]. Steel No.…”

Section: Resultsmentioning

confidence: 99%

Microstructure, Mechanical Properties, and Corrosion Behavior of Ultra-Low Carbon Bainite Steel with Different Niobium Content

Zong

Liu

2021

Materials

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Four types of ultra-low carbon bainite (ULCB) steels were obtained using unified production methods to investigate solely the effect of niobium content on the performance of ULCB steels. Tensile testing, low-temperature impact toughness testing, corrosion weight-loss method, polarization curves, electrochemical impedance spectroscopy (EIS), and the corresponding organizational observations were realized. The results indicate that the microstructure of the four steels comprise granular bainite and quite a few martensite/austenite (M/A) elements. The niobium content affects bainite morphology and the size, quantity, and distribution of M/A elements. The elongation, yield strength, and tensile strength of the four types of ULCB steels are above 20%, 500 MPa, and 650 MPa, respectively. The impact toughness of the four types of ULCB steels at −40 °C is lower than 10 J. Steel with Nb content of 0.0692% has better comprehensive property, and maximum charge transfer resistance in 3.5 wt.% NaCl solution at the initial corrosion stage. The corrosion products on the surface of steel with higher niobium content are much smoother and denser than those steel with lower niobium content after 240 h of corrosion. The degree of corrosion decreases gradually with the increase of niobium content at the later stage of corrosion.

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Section: Resultsmentioning

confidence: 99%

Microstructure, Mechanical Properties, and Corrosion Behavior of Ultra-Low Carbon Bainite Steel with Different Niobium Content

Zong

Liu

2021

Materials

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“…From Figure 11 b, it can be seen that the Nyquist impedance spectra of the corrosion product films formed in each corrosion stage show similar characteristics, which are capacitive arcs in the first quadrant. The size of the capacitive arc radius is generally considered to represent the charge transfer resistance of the corrosion process, and a larger radius indicates a higher charge transfer resistance [ 35 , 36 , 37 ]. The corrosion product film of the capacitive arc radius of resistance with the corrosion time extends the first decrease and then gradually increases, indicating that the reaction resistance of the corrosion process gradually increased and the corrosion rate decreased.…”

Section: Resultsmentioning

confidence: 99%

Corrosion Product Film of a Medium-Mn Steel Exposed to Simulated Marine Splash Zone Environment

Yan

Kang

et al. 2021

Materials

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The corrosion behavior of a medium-Mn steel in a simulated marine splash zone was studied by a dry–wet cyclic corrosion experiment and electrochemical experiment. The corrosion products were characterized by corrosion rate calculation, composition detection, morphology observation, element distribution detection, valence analysis, polarization curve, and electrochemical impedance test. The results show that the corrosion products of the sample mainly include γ-FeOOH, FexOy, MnxOy, and a small amount of (Fe,Mn)xOy, and the valence state of iron compounds and manganese compounds in different corrosion stages changed obviously. In the initial corrosion products, Mn is enriched significantly and facilitates the electrochemical reaction of corrosion process. The content of Ni in the inner rust layer is high. The semi-quantitative analysis of the corrosion product elements shows that the atomic concentrations of Cr and Mo increase significantly in later corrosion products, indicating that the dense isolation layer formed by alloy element compounds in the corroded layer is the main factor to improve the protection ability of the rust layer at the end corrosion stage of the sample. With the corrosion durations, the corrosion current density of the sample with the corrosion product film first increases and then decreases, and the corrosion potential first moves negative and then shifts in a positive direction subsequently, indicating that the protective effect of the corrosion product film is gradually significant.

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“…In this test frequency range, there are not only the charging and discharging process of surface electric double layer, but also the influence of substrate surface corrosion reaction on current density. The larger the radius of the reactance arc indicates the charge transfer resistance in the corrosion process, the larger the radius of the reactance arc indicates the greater the charge transfer resistance [41][42][43]. As shown in figure 9(d), the relationship between frequency and impedance mode of the EIS bode diagram shows, with the increase of dry and wet corrosion time, the total impedance modulus at low frequency decreases first and then increases gradually.…”

Section: Electrochemical Measurement Of Corrosion Productsmentioning

confidence: 87%

Corrosion behavior and electrochemical corrosion of a high manganese steel in simulated marine splash zone

Yan

Yan²,

Kang

et al. 2021

Mater. Res. Express

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The corrosion behavior of a high manganese steel in simulated marine splash zone environment was studied by dry-wet cyclic corrosion experiment and electrochemical experiment. Corrosion kinetics, composition, surface morphology, cross-section morphology, element distribution, valence state, polarization curve and electrochemical impedance spectroscopy were analyzed with the aim of characterizing the characteristics of corrosion product films. The results show that in chloride-containing environment, in the initial corrosion products, Mn oxides with porous structure lead to higher corrosion rate. As corrosion extends, the formation of alloy element oxides in corrosion products changes the corrosion properties of rust layers at different stages. Mo oxides form a stable passivation film, which reduces the influence of chloride ion on corrosion. Ni oxides in the inner rust layer facilitate the transformation of goethite, and Cr oxides in the outer rust layer increase the densification of the rust layer. The stability and compactness of Fe3O4, α-FeOOH and FeCr2O4 in the later corrosion products inhibit the corrosion action of manganese iron oxides and slow down the corrosion rate. With the corrosion durations, the corrosion current density of the sample with the corrosion product film first increases and then decreases, and the corrosion potential first moves negative and then shifts in a positive direction subsequently, indicating that the protective effect of the corrosion product film is gradually significant.

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Microstructure Characteristic and Electrochemical Corrosion Behavior of Surface Nano-crystallization Modified Carbon Steel

Cited by 12 publications

References 28 publications

Microstructure, Mechanical Properties, and Corrosion Behavior of Ultra-Low Carbon Bainite Steel with Different Niobium Content

Microstructure, Mechanical Properties, and Corrosion Behavior of Ultra-Low Carbon Bainite Steel with Different Niobium Content

Corrosion Product Film of a Medium-Mn Steel Exposed to Simulated Marine Splash Zone Environment

Corrosion behavior and electrochemical corrosion of a high manganese steel in simulated marine splash zone

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