Microstructure and corrosion behavior of FeNiCoCrCu and FeNiCoCrMn high entropy alloys manufactured by powder metallurgy in different acid media

Abolkassem, Shimaa A.; Mohamed, Lamiaa Z.; Elkady, Omayma A.

doi:10.1016/j.jmrt.2020.12.016

Cited by 29 publications

(8 citation statements)

References 37 publications

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“…Comparing the corrosion behaviours of FeNiCoCrCu and FeNiCoCrMn, it was found that FeNiCoCrCu tends to withstand corrosion in extremely aggressive solutions, like 5% and 10% HCl, HNO 3 , and H 2 SO 4 solutions. FeNiCoCrCu exhibits lower weight loss rates after 24–120 h of exposure and thus, lower corrosion rates [ 89 ].…”

Section: Corrosion Resistance Of Heasmentioning

confidence: 99%

A review on wear, corrosion, and wear-corrosion synergy of high entropy alloys

Zirari,

Trabadelo

2024

Heliyon

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Section: Corrosion Resistance Of Heasmentioning

confidence: 99%

A review on wear, corrosion, and wear-corrosion synergy of high entropy alloys

Zirari,

Trabadelo

2024

Heliyon

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“…Copper addition is reported to boost the corrosion resistance of HEAs 10 . Abolkassem et al 50 assessed the corrosion resistance of FeNiCoCr HEA with Cu addition in acidic solutions. The alloys were prepared by powder metallurgy.…”

Section: Alloy Composition and Passive Film Stabilitymentioning

confidence: 99%

A review on Corrosion of High Entropy Alloys: Exploring the Interplay Between Corrosion Properties, Alloy Composition, Passive Film Stability and Materials Selection

et al. 2022

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The corrosion resistance of high entropy alloys was reviewed in the present work. The main focus was to explore the correlation between alloy composition, passive film stability and corrosion properties and use this information to develop a materials selection procedure based on the Ashby approach. Corrosion current densities and pitting potentials were the main design parameters used to rank different alloys, based on a careful examination of data published in the literature, considering uniform and localized corrosion, respectively. The outputs of the selection process clearly indicated a strong dependence of the corrosion resistance on passive film stability, although microstructural homogeneity and uniform distribution of alloying elements should not be disregarded. Proper combinations of elements such as Co, Al, Ti, Mo and Cr, especially, are effective at enhancing the corrosion resistance of high entropy alloys.

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“…After that, the average corrosion rate (CR) can be calculated. 29 C:R: mm/y where K, T, A, DW, and D are a constant (8.76 9 10 4 ), time in h, section area (cm 2 ), loss of sample weight (grams), and density (g/cm 3 ), respectively.…”

Section: Electrochemical Corrosion Characterizationmentioning

confidence: 99%

“…The CR depends on the composition and the passive film structure produced in the solution. 29 At low concentrations, the CR of the Cr 5 HEA is good because of a formation of a stable passive film in the acid media. The corrosion current density values and CR for Cr 5 HEA reach the maximum values in 10% 3 acid with 0.3557 mA/cm 2 and 4.19 mm/y, respectively.…”

Section: Potentiodynamic Polarizationmentioning

confidence: 99%

Comparative Studies of Cr/Ti Additions for Cu40Mn25Al20Fe5Ni5 HEA on Microstructure and Corrosion Behavior in HNO3 Solution

2022

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The influence of Cr or Ti additions to Cu40Mn25Al20Fe5Ni5 high entropy alloy (HEA) on the microstructure and corrosion behavior in different concentrations of HNO3 solution were investigated. The microstructures of the Cu-rich HEAs are characterized and analyzed. Microstructural analysis of the HEAs indicates the formation of a dendritic structure. Also, the phases are identified by using X-ray diffraction (XRD). The corrosion behavior of the investigated HEAs in the HNO3 solution was studied. The corrosion rate (CR) for Cu40Mn25Al20Fe5Ni5Ti5 HEA (Ti5 HEA) has a lower value than Cu40Mn25Al20Fe5Ni5Cr5 HEA (Cr5 HEA). The morphology of the corroded HEAs was investigated by using SEM images, EDX analysis, and mapping for elemental distribution. Cr addition led to the formation of a Cr2O3 protective film on the dendrites. However, the Ti5 HEA has a good surface morphology with a homogenous distribution than Cr5 HEA which is associated with a decrease in the corrosion rate.

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Microstructure and corrosion behavior of FeNiCoCrCu and FeNiCoCrMn high entropy alloys manufactured by powder metallurgy in different acid media

Cited by 29 publications

References 37 publications

A review on wear, corrosion, and wear-corrosion synergy of high entropy alloys

A review on wear, corrosion, and wear-corrosion synergy of high entropy alloys

A review on Corrosion of High Entropy Alloys: Exploring the Interplay Between Corrosion Properties, Alloy Composition, Passive Film Stability and Materials Selection

Comparative Studies of Cr/Ti Additions for Cu40Mn25Al20Fe5Ni5 HEA on Microstructure and Corrosion Behavior in HNO3 Solution

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