Enhancement of the corrosion resistance of mild steel with femtosecond laser- nanostructuring and CrCoNi medium entropy alloy coating

Ahmad, Shahbaz; Ahmad, Waqas; Baker, Aya Abu; Egilmez, M.; Abuzaid, Wael; Orhan, Mehmet F.; Ibrahim, Taleb H.; Khamis, Mustafa; Alnaser, A. S.

doi:10.1016/j.apsadv.2022.100321

Cited by 16 publications

(7 citation statements)

References 56 publications

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“…Due to the utilization of multiple alloying elements at large percentages, the term Multi-principle Element alloys (MPE) is becoming widely accepted in the literature to describe the various alloys that fall into this category of materials [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. From a practical perspective, many of the developed MPE compositions have been shown to exhibit remarkable properties in terms of outstanding cryogenic strength and fracture toughness [ 13 ], thermal stability [ 14 ], and excellent wear and corrosion resistance [ 15 , 16 , 17 ]. Unlike traditional high-strength alloys, an increase in both the strength and ductility of the HEAs has been observed under cryogenic conditions [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Strange Metallicity and Magnetic Order in the CoNi(Cr/V) Medium-Entropy Alloy System

et al. 2023

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CoNiCr is a prototypical example of topical multi-principle element alloys with superior cryogenic and high-temperature mechanical strength, corrosion, oxidation resistance, and yet-to-be-explored magnetic and electronic functionalities. The remarkable properties of this transition metal ternary system are not only due to atomic radii, electronic configurational mismatch, and atomic volume misfit but are also dependent on the debated magnetically driven chemical short-range order. The current study focuses on the electric and magnetic properties of the single-phase face-centered cubic CoNi(Cr/V) system in which V is introduced to the system at the expense of Cr to fine-tune the volume misfit in the system. All the samples exhibited ultra-small magnetic moments due to the complex magnetic interactions of the constituent elements. The electric transport measurements revealed a strange metallicity evidenced through the observation of the linear temperature dependence of the resistivity. Our findings support the recent theoretical studies on the magnetically driven chemical short-range order of the CoNiCr system.

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Section: Introductionmentioning

confidence: 99%

Strange Metallicity and Magnetic Order in the CoNi(Cr/V) Medium-Entropy Alloy System

et al. 2023

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“…To study the relationship between corrosion resistance and wettability state, the corrosion rates for each laser‐structured sample were determined. The corrosion rate was calculated from the Faraday's law, described by Equation (): [ 67 ]

\begin{equation}CR\ = \ \frac{{{i}_{{\mathrm{corr}}}\ .\ M}}{{N\ .\ F\ .\ \rho }}\end{equation}

where i corr is the corrosion current density of the sample, M is the molecular weight of aluminum, N is the number of electrons involved in the oxidation process (for aluminum is 3), F is the constant of Faraday, and ρ the density of aluminum.…”

Section: Resultsmentioning

confidence: 99%

“…[65,66] To study the relationship between corrosion resistance and wettability state, the corrosion rates for each laser-structured sample were determined. The corrosion rate was calculated from the Faraday's law, described by Equation ( 2): [67]…”

Section: Corrosion Behaviormentioning

confidence: 99%

On the Corrosion Properties of Aluminum 2024 Laser‐Textured Surfaces with Superhydrophilic and Superhydrophobic Wettability States

Zschach,

Baumann,

Soldera

et al. 2023

Adv Materials Inter

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In this work, the mechanism of the corrosion behavior of laser‐treated aluminum is studied. Two different laser techniques are used to fabricate the samples, direct laser interference patterning (DLIP) and direct laser writing (DLW), using nanosecond laser sources. The DLIP treatment uses a two‐beam optical configuration producing line‐like periodic structures. The DLW technique is employed to produce non‐periodic structures on the Al‐surface with the same cumulated fluences as in DLIP. The surface topography is analyzed by confocal microscopy, and the formation of oxide layers is investigated by scanning electron microscopy of cross‐sections produced using a focused ion beam. Wetting measurements performed on the laser‐treated samples exhibit a contrasting behavior, leading to either superhydrophobic or superhydrophilic states. In the case of the DLIP treatment, the static water contact angle is increased from 81° up to 158°, while for DLW, it decreases to 3°. Electrochemical tests demonstrate a decreased corrosion rate after laser treatment. Additionally, findings indicate no correlation between wettability and corrosion reduction. Therefore, the improvement in corrosion resistance is mainly attributed to the oxide layer formed by laser treatment. Although similar corrosion rates are achieved for both treatments, surfaces produced with DLIP can be beneficial when additional surface properties are required.

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“…The properties of other MEA coatings are presented in Table 1 in comparison to those of the uncoated substrate. It is worth mentioning that choosing an appropriate surface treatment prior to the coating deposition could improve the film adhesion and thus the properties of the coated material [17,60].…”

Section: Coatings With Meamentioning

confidence: 99%

A Fresh Perspective on Medium Entropy Alloys Applications as Coating and Coating Substrate

Nartita¹,

Ioniță²,

Demetrescu³

et al. 2022

AnnalsARSciPhysChem

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In order to evolve as a society we need increasingly efficient technologies and implicitly materials with great performance that promote safety and sustainability. The discovery of high entropy alloys was received with much enthusiasm due to the possibility of designing new materials with improved properties, that could be used in applications that require extreme conditions or a very specific combination of properties. As the research in this area is continuously increasing and the results are very promising, this review focuses on the most recent investigations on medium entropy alloys (MEAs) applications, highlighting their properties, but taking into consideration other factors, such as economic and environmental factors. Additionally, considering the high cost associated with MEAs fabrication, MEA coatings are also explored, as they are nowadays regarded as a more convenient procedure to obtain the required properties for various substrate materials.

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Enhancement of the corrosion resistance of mild steel with femtosecond laser- nanostructuring and CrCoNi medium entropy alloy coating

Cited by 16 publications

References 56 publications

Strange Metallicity and Magnetic Order in the CoNi(Cr/V) Medium-Entropy Alloy System

Strange Metallicity and Magnetic Order in the CoNi(Cr/V) Medium-Entropy Alloy System

On the Corrosion Properties of Aluminum 2024 Laser‐Textured Surfaces with Superhydrophilic and Superhydrophobic Wettability States

A Fresh Perspective on Medium Entropy Alloys Applications as Coating and Coating Substrate

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