Electrochemical deposition and microstructural characterization of AlCrFeMnNi and AlCrCuFeMnNi high entropy alloy thin films

Soare, Vasile; Burada, Marian; Constantin, Ionuţ; Mitrică, Dumitru; Bădiliţă, Viorel; Caragea, A.; Tarcolea, Mihai

doi:10.1016/j.apsusc.2015.07.142

Cited by 119 publications

(35 citation statements)

References 25 publications

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“…Since it does not require the complex equipment and expensive raw materials, electrochemical deposition provides a possibility of the low-cost synthesis of HEA films. Furthermore, through altering the deposition parameters, electrodeposition can easily control the composition, morphology, and thickness of the films [59][60][61]. Yao et al [40] prepared the amorphous BiFeCoN-iMn HEA films by potentiostatic electrodeposition.…”

Section: Electrochemical Depositionmentioning

confidence: 99%

“…The as-deposited films show soft magnetic behavior, and the annealed films exhibit hard magnetic properties. Soare et al [60] prepared the AlCrFeMnNi and AlCrCuFeMnNi films by potentiostatic electrodeposition. The as-deposited films were amorphous, and the BCC structures were identified after the films were annealed at various temperatures under inert Ar atmosphere.…”

Section: Electrochemical Depositionmentioning

confidence: 99%

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Microstructures and properties of high-entropy alloy films and coatings: a review

Liu

Liaw

2018

Materials Research Letters

372

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In the past 14 years, as a branch of high-entropy alloy (HEA) materials, HEA films and coatings have exhibited the attractive and unique properties, relative to the conventional film and coating materials. The recent research and development of HEA films and coatings are reviewed in this paper. At first, the basic concept of HEAs films and coatings are introduced. Then, their preparation technologies, microstructures and appealing properties are summarized. Moreover, the possible reasons and design criteria for achieving the excellent properties are discussed. Finally, the suggested future research work for the HEA films and coatings are outlined. IMPACT STATEMENT Preparation technologies, microstructures, and properties of HEA films and coatings are reviewed in this paper. The design criteria and suggested research directions are further discussed and proposed.

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Section: Electrochemical Depositionmentioning

confidence: 99%

Section: Electrochemical Depositionmentioning

confidence: 99%

Microstructures and properties of high-entropy alloy films and coatings: a review

Liu

Liaw

2018

Materials Research Letters

372

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“…13,[26][27][28][29][30] However, the traditional method mainly produce bulk HEAs rather than nanostructures. 26,[31][32][33][34] Moreover, the preparation of uniform nanostructured HEAs with small size (< 10 nm) currently requires speci c equipment (fast heating/cooling rate, ~10 5 K per second), high temperature (~2000 kelvin), and high temperature resistant and conductive substrate (carbon nano ber), such as carbon-thermal shock method. 35 In this work, we synthesized the small size (~3.…”

Section: Introductionmentioning

confidence: 99%

Fast Site-to-site Electron Transfer of High-entropy Alloy Nanocatalyst Driving Redox Electrocatalysis

Han

Zhao

et al. 2020

Preprint

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Designing electrocatalysts with high-performance for both reduction and oxidation reactions faces severe challenges. Here, the uniform and small size (~3.4 nm) high-entropy alloys (HEAs) Pt18Ni26Fe15Co14Cu27 nanoparticles (NPs) are synthesized by a simple low-temperature (<250 oC) oil phase synthesis strategy at atmospheric pressure for the first time. The Pt18Ni26Fe15Co14Cu27/C catalyst exhibits excellent electrocatalytic performance for hydrogen evolution reaction (HER) and methanol oxidation reaction (MOR). The catalyst is one of the best performance achieved by state-of-the-art alkaline HER catalysts, which shows an ultrasmall overpotential of 11 mV at the current density of 10 mA cm-2, excellent activity (10.96 A mg-1Pt at -0.07 V vs. reversible hydrogen electrode) and stability in the alkaline medium. Furthermore, it is also the most efficient catalyst (15.04 A mg-1Pt) ever reported for MOR in alkaline solution. DFT calculations confirm the multi-active sites for both HER and MOR on the HEA surface as the key factor for both proton and intermediate transformation. Meanwhile, the construction of HEA surfaces supplies the fast site-to-site electron transfer for both reduction and oxidation processes.

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“…Among the large number of high-entropy alloys, some emphasis has been placed on the interesting of CoCrFeMnNi high-entropy alloy, the equiatomic CoCrFeMnNi high-entropy alloy demonstrates high thermodynamic stability, remarkable work hardening capacity, excellent ductility and superior corrosion resistance [10][11][12][13]. Until now, many methods were put forward to the preparation of CoCrFeMn-Ni bulk solids or coatings, such as arc-melting method, powder metallurgy, magnetron sputtering, laser cladding, electrochemical synthesis and so on [13][14][15][16][17][18][19][20][21][22]. To successfully fabricate homogenous bulk or coatings by powder metallurgy or laser cladding, it is especially important to synthesis high-entropy alloy powders with a good homogeneous microstructure.…”

Section: Introductionmentioning

confidence: 99%

CoCrFeMnNi high‐entropy alloy powder with excellent corrosion resistance and soft magnetic property prepared by gas atomization method

Jin¹,

Gu²,

Feng

et al. 2019

Materialwissenschaft Werkst

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To successfully fabricate high‐entropy alloys by powder metallurgy, laser cladding, or thermal sprayed method, the high‐entropy alloy powders possessing good homogeneous microstructure are very important. However, the study on the properties of the high‐entropy alloy powder has still been lacking. In this work, an equiatomic CoCrFeMnNi high‐entropy alloy powder with spherical shape was synthesized by gas atomization method. The as‐atomized CoCrFeMnNi high‐entropy alloy powder is composed of a single face‐centered cubic solid solution phase with the particle size of 34.0 μm. Furthermore, the as‐atomized powder exhibits excellent corrosion resistance in 10 % hydrochloric acid solution to 304 L stainless steel powder, and also shows an excellent soft magnetic behavior. Therefore, the gas atomization method can be used to generate other kinds of high‐entropy alloy powders for many challenging industrial applications.

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Electrochemical deposition and microstructural characterization of AlCrFeMnNi and AlCrCuFeMnNi high entropy alloy thin films

Cited by 119 publications

References 25 publications

Microstructures and properties of high-entropy alloy films and coatings: a review

Microstructures and properties of high-entropy alloy films and coatings: a review

Fast Site-to-site Electron Transfer of High-entropy Alloy Nanocatalyst Driving Redox Electrocatalysis

CoCrFeMnNi high‐entropy alloy powder with excellent corrosion resistance and soft magnetic property prepared by gas atomization method

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