First-principles study on corrosion resistance of copper-bearing hypereutectic high chromium cast iron

Liqiang, Gong; Fu, Hanguang; Xing, Zhi

doi:10.1016/j.mtcomm.2022.104345

Cited by 8 publications

(4 citation statements)

References 18 publications

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“…3c may possibly be caused by the corrosion passivation of zinc and the hydrogen evolution reaction in corrosive liquids. 37,38 The data in Table 1 was obtained by fitting the data to observe the corrosion of the metal anode and cathode. The corrosion inhibition efficiency is calculated with the following formula (eqn (1)): 39 where j corr 0 and j corr represent the corrosion current densities of pristine zinc foil and Zn-ZnO@C- X ( X = 500, 550, 600), respectively.…”

Section: Resultsmentioning

confidence: 99%

Construction of a self-supported dendrite-free zinc anode for high-performance zinc–air batteries

Mou

Bai²,

Zhao³

et al. 2023

Inorg. Chem. Front.

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Section: Resultsmentioning

confidence: 99%

Construction of a self-supported dendrite-free zinc anode for high-performance zinc–air batteries

Mou

Bai²,

Zhao³

et al. 2023

Inorg. Chem. Front.

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“…Δ G H + v is the adsorption energy difference between the activated particles Δ G act v and the reactants Δ G H + + μ e for HER. The transfer coefficients α of reactants can be approximately obtained via Marcus theory, and they are the same for the cathode and the anode. ,, Accordingly, the current density I v_a of Volmer reaction can be evaluated as, I normalv_a = 2 F v normalv_ad …”

Section: Corrosion Model and Calculation Methodsmentioning

confidence: 99%

“…It was also reported that the steel and copper exhibited higher anticorrosion performance in HCl solution with higher concentrations of 2-ethyl phenyl-2, 5-dithiohydrazodicarbonamide. However, the electrolyte solution characteristics are not considered in the conventional models for the prediction of corrosion, and thus it cannot accurately predict the corrosion behaviors of metals. , For example, the predicted I corr values (7.24 × 10 –3 A cm –2 @ pH = 1) of hypereutectic high chromium cast iron were much higher than the measured data (2.57 × 10 –6 A cm –2 @ pH = 1). Therefore, the models and the method should be further developed.…”

Section: Introductionmentioning

confidence: 97%

Theoretical Screening of Transition Metal Alloys with High Corrosion Resistance: The Case of Ta-Based Alloys as an Example

Lv,

Gao,

Luo

et al. 2024

J. Phys. Chem. C

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Proton exchange membrane water electrolysis (PEMWE) is one of the potential strategies to generate green hydrogen energy, and anticorrosive coatings are mandatory to protect the bipolar plates, an important component of PEMWE. However, it is still challenging to explore the high-corrosion-resistance coatings by trial and error. In this paper, the corrosion properties of Ta and its alloys as examples are studied theoretically; in particular, the influences of crystal planes and alloying elements on the corrosion resistance have been studied systematically. Four descriptors, surface energy density ξ, work function τ, electronic descriptor ψ, and d band center ς, are proposed to screen the high-corrosion-resistance coatings. It is found that the electronic descriptor ψ can well predict the atomic escape energy and thus the corrosion resistance of Ta-based binary alloys with the coefficient of determination R 2 of 0.804 and 0.949, respectively. Among them, TaW and TaCr alloys exhibit the most excellent corrosion resistance with the lowest I corr (<1.59 × 10 −7 A cm −2 ) and the highest U corr (> −0.011 V vs SHE) because of the largest −IpCOHP values and thus the strongest binding strength. The screening method is also applicable to the other alloys.

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“…The limited scope of application explains the small amount of research on iron-carbon alloys with a high copper content. Most of the works are related to the analysis of the structure and properties of alloys containing less than 2% copper [1][2][3][4][5][6][7][8][9][10][11][12][13][17][18][19][20][21][22][23][24][25] as well as its effect on corrosion resistance [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Structural transformations and their impact on the mechanical and antifriction properties in the process of alloying graphitized hypereutectoid steel with copper

Stepanova,

Lozhkina

2023

Chim.Tech.Acta

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The purpose of the work is to develop a cast antifriction material based on an iron-carbon alloy with a high copper content for use in large, heavy duty sliding friction units. Using the casting method in self-hardening liquid glass mixtures, two specimens of hypereutectoid graphitized steel with different copper contents (0.09 and 8.76 wt.%) were produced. To obtain graphite in the steel structure, modification with the silicocalcium (SiCa) was used. The microstructural examination was carried out using optical metallography, SEM and TEM methods. The impact of copper on the structure as well as the mechanical and antifriction properties of graphitized hypereutectoid steel was studied. It was found that adding 8.76 wt.% of copper to the steel composition leads to an increase in the Brinell hardness level of the material from 250 to 300 HB, ultimate tensile strength from 250 to 380 MPa and compressive strength from 1050 to 1200 MPa, which is associated with an increase in the microhardness of pearlite from 350 to 420 HV. To assess the impact of copper on the sliding friction coefficient of graphitized hypereutectoid steel, a curve of sliding friction coefficient vs applied load was plotted; the experiment was carried out according to the liner-on-disk scheme. The wear resistance of materials under sliding friction conditions was also assessed using this method. Copper alloying has a positive effect on the wear resistance of graphitized hypereutectoid steel by increasing the mechanical properties of the material and also by reducing the level of the sliding friction coefficient under boundary lubrication conditions.

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First-principles study on corrosion resistance of copper-bearing hypereutectic high chromium cast iron

Cited by 8 publications

References 18 publications

Construction of a self-supported dendrite-free zinc anode for high-performance zinc–air batteries

Construction of a self-supported dendrite-free zinc anode for high-performance zinc–air batteries

Theoretical Screening of Transition Metal Alloys with High Corrosion Resistance: The Case of Ta-Based Alloys as an Example

Structural transformations and their impact on the mechanical and antifriction properties in the process of alloying graphitized hypereutectoid steel with copper

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