Effect of titanium addition on the corrosion behavior of CoCuFeNiMn high entropy alloy

Öztürk, Sultan; Alptekin, Furkan; Önal, Suat; Sünbül, Sefa Emre; Şahin, Ömer; İçi̇n, Kürşat

doi:10.1016/j.jallcom.2022.163867

Cited by 40 publications

(7 citation statements)

References 69 publications

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“…The excessive addition of Mo in FeCoCrNiMo x HEA leads to the formation of enriched Cr–Mo phases and makes the matrix poor in Cr and Mo, thus FeCoCrNiMo x HEA with excessive Mo is susceptible to localized corrosion. [ 15 ] Similar behaviors were reported in Al 0.3 CoCrFeNi and CoCuFeNiMnTi x HEAs, [ 16,17 ] where the corrosion resistance of Al 0.3 CoCrFeNi and CoCuFeNiMnTi x alloys was decreased due to the formation of (Al, Ni)‐rich phase and Cr‐poor B2 phase in Al 0.3 CoCrFeNi HEA and Ti‐rich regions in CoCuFeNiMnTi x HEA. Shuang et al [ 18 ] prepared a nanostructured eutectic FeCrNiCoNb 0.5 HEA that overcomes the shortcomings of multiphase alloys and exhibits excellent corrosion resistance in a solution of sodium chloride.…”

Section: Introductionsupporting

confidence: 61%

A Comparative Study on Corrosion Behaviors of Fe35Mn10Cr20Ni35 High‐Entropy Alloy and 304 Stainless Steel in Sulfuric Acid Aqueous Solution

Zhou

Jiang²,

Liao

et al. 2022

Adv Eng Mater

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Herein, the corrosion behaviors of Fe35Mn10Cr20Ni35 high‐entropy alloy (HEA) and commercial 304 stainless steel (304 SS) in 0.5 M H2SO4 aqueous solutions are evaluated. Potentiodynamic polarization test results indicate that both the prepared HEA and 304 SS possess a large passive interval, illustrating that they have a strong capability to form passive films. The prepared HEA possesses higher corrosion potentials and lower corrosion current densities than that of 304 SS, thus it has more superior corrosion resistance. The electrochemical impedance spectroscopy and electrical equivalent circuits results indicate that the charge‐transfer resistance of HEA is higher than that of 304 SS and the passive films of the prepared HEA is thicker than that of 304 SS. These indicate that the passive film on the prepared HEA has an excellent protective ability to prevent further corrosion. X‐Ray photoelectron spectroscopy results indicate that the passive film of the prepared HEA samples is mainly composed of compacted metal oxides, especially Cr2O3‐dense oxides, while the passive film of 304 SS is mainly composed of loose hydroxides and compacted metal oxides. That is the key reason why the prepared HEA has better corrosion resistance than 304 SS.

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Section: Introductionsupporting

confidence: 61%

A Comparative Study on Corrosion Behaviors of Fe35Mn10Cr20Ni35 High‐Entropy Alloy and 304 Stainless Steel in Sulfuric Acid Aqueous Solution

Zhou

Jiang²,

Liao

et al. 2022

Adv Eng Mater

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“…This is indicated by the maximum corrosion current density ( I = 3.38 mA·cm −2 ), which was directly proportional to the corrosion rate according to the Faraday’s law [ 39 ]. In this case, the undesirable oxide Cu 2 O deteriorating the protective properties of the passivation layer was formed on the sample surface along with Cr 2 O 3 [ 40 ].…”

Section: Resultsmentioning

confidence: 99%

The Effect of Copper on the Microstructure, Wear and Corrosion Resistance of CoCrCuFeNi High-Entropy Alloys Manufactured by Powder Metallurgy

et al. 2023

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This paper focuses on the microstructure, phase composition, mechanical, tribological and corrosion properties of high-entropy alloys (HEAs) in the CoCrCuFeNi system depending on copper content, which was varied from 0 to 20 at. % with an increment of 5%. CoCrCuFeNi alloys were manufactured by powder metallurgy methods: mechanical alloying and hot pressing of element mixtures. The solubility limit of copper in CoCrFeNi solid solution was found to be 9 at. %. Segregation of irregularly shaped copper grains sized 1–30 μm is observed at concentrations above this solubility limit. As copper concentration increases, the phase composition of CoCrCuFeNi alloys changes from the single phase based on FCC1 solid solution (Cu = 0–5 at. %) to the dual-phase FCC1 + FCC2 alloy (Cu = 10–20 at. %), where FCC1 is the main phase and FCC2 is the secondary copper-rich phase. Tribological tests have shown that doping the CoCrFeNi alloy with copper increased wear resistance by 23% due to solid solution hardening. As copper content rises above 20%, the content of the secondary FCC2 phase increases, while wear resistance and alloy hardness decline. An analysis of wear tracks and wear products has shown that abrasion of CoCrCuFeNi alloys occurs via the abrasive-oxidative wear mechanism. The corrosion tests of CoCrCuFeNi HEAs in 3.5% NaCl solution had demonstrated that doping the alloy with copper at low concentrations (5–10%) leads to decreasing of corrosion resistance, possibly due to the formation of undesirable oxide Cu2O along with protective Cr2O3. At high copper concentrations (15–20%) galvanic corrosion is suppressed due to coarsening of FCC2 grains and thus decreasing the specific contact surface area between the cathode (FCC2) and the anode (FCC1).

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“…Due to HEAs outstanding mechanical qualities and biocompatibility, HEAs are a subclass of biomaterials which biomedical applications have recently undergone intensive exploration (Patil et al, 2022). Sputtered High Entropy Alloys are a potential material that can be used for medical applications due to their exceptional film qualities such as superior wear and corrosion resistance, biocompatibility, osseointegration, and remarkable polarization resistance (Öztürk et al, 2022;Patil et al, 2022;Shi et al, 2020a;Zhou et al, 2018). And, also the adhesion properties from the sputtering deposition techniques, owing to the strong bonding between the film and the substrate material (Aksoy et al, 2019;Chu et al, 2014;Gökmenoǧlu et al, 2016;Peighambardoust et al, 2021;Braic et al, 2012).…”

Section: Biomedical Applicationsmentioning

confidence: 99%

Sputtering of high entropy alloys thin films: An overview

Oladijo,

Akinlabi,

Mwema

et al. 2024

10.5267/j.esm

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For the past 19 years, high entropy alloys (denoted as HEAs) have piqued the interest of many researchers due to their unique properties. Sputtering High Entropy Alloys on bulk materials, on the other hand, have been widely utilized due to their low cost of manufacture. This paper reviews the most recent trends and advancements in sputtered HEA coatings, thin film research, and development. Firstly, HEA coating and thin films were introduced. Then, a look at sputtering technologies and procedures is presented, followed by a summary of recent research on sputtered HEA thin films, properties, and applications. From reviewed literature, it can be deduced that HEAs that include the full nitride element have greater mechanical and elastic properties, and HEAs generally have the potential for structural, industrial, biomedical, and energy applications. Finally, it is suggested that new stable HEA films and coating research initiatives with various materials be undertaken to widen its applications.

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Effect of titanium addition on the corrosion behavior of CoCuFeNiMn high entropy alloy

Cited by 40 publications

References 69 publications

A Comparative Study on Corrosion Behaviors of Fe35Mn10Cr20Ni35 High‐Entropy Alloy and 304 Stainless Steel in Sulfuric Acid Aqueous Solution

A Comparative Study on Corrosion Behaviors of Fe35Mn10Cr20Ni35 High‐Entropy Alloy and 304 Stainless Steel in Sulfuric Acid Aqueous Solution

The Effect of Copper on the Microstructure, Wear and Corrosion Resistance of CoCrCuFeNi High-Entropy Alloys Manufactured by Powder Metallurgy

Sputtering of high entropy alloys thin films: An overview

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