Pulse potentiostatic deposition of Fe Zn based intermetallic coatings and evaluation of its catalytic activity for hydrogen evolution reaction

Biswas, Srija; Das, Sourav; Jena, Sambedan; Mitra, Arijit; Das, Siddhartha; Das, Karabi

doi:10.1016/j.surfcoat.2020.126299

Cited by 6 publications

(3 citation statements)

References 35 publications

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“…These outbursts promote the formation of high-Fe-content intermetallic phases (Fe contents: δ (7-11 wt.%), Γ 1 (16-19 wt.%), and Γ (20-27 wt.%) at the interface [27]. The Γ 1 phase, which is a highly brittle IMC with a hardness of approximately 500 Hv [28], may be damaged due to physical stresses, such as cutting and/or polishing, during sample preparation for microstructural observation, leading to the formation of cracks. While the cutting method employed was consistent among all the specimens, the presence of visible cracks in sample S0 implied that such cracking was an inherent characteristic of the Zn-Al-Mg coating without Si.…”

Section: Resultsmentioning

confidence: 99%

Effects of Si Addition on Interfacial Microstructure and Corrosion Resistance of Hot-Dip Zn–Al–Mg–Si Alloy-Coated Steel

So,

Grandhi,

Kwon

et al. 2024

Crystals

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Alloy coatings protect steel from corrosion in various applications. We investigated the effects of Si addition on the microstructure, electrochemical behavior, and corrosion resistance of steel sheets coated with a hot-dip Zn–Mg–Al–Si alloy using a batch-type galvanization process. Microstructural analysis revealed that the Zn–Al–Mg alloy coating layer contained a significant amount of Fe that diffused from the substrate, leading to delamination due to the formation of brittle Fe–Zn intermetallic compounds. However, the introduction of Si resulted in the formation of a stable Fe2Al3Si inhibition layer at the substrate–coating interface; this layer prevented interdiffusion of Fe as well as enhanced the coating adhesion. Additionally, the formation of acicular Mg2Si phases on the coating surface improved the surface roughness. As the Si content increased, the corrosion resistance of the coating improved. Specifically, the Zn–Al–Mg coating layer with 0.5 wt.% Si exhibited excellent anti-corrosion performance, without red rust formation on its surface even after 2600 h, during a salt spray test.

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Section: Resultsmentioning

confidence: 99%

Effects of Si Addition on Interfacial Microstructure and Corrosion Resistance of Hot-Dip Zn–Al–Mg–Si Alloy-Coated Steel

So,

Grandhi,

Kwon

et al. 2024

Crystals

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“…Additionally, it was found that the presence of Ti in NiMo further increased the intrinsic activity for HER. 168 The comparably high surface area that maximizes the exposure of active sites was also observed in Ti–Ni, 196 Fe–Zn 155 Pd 2 Si, 125 Ni 2 Si, 125 GaPt 3 , 122 GaPd 2 , 123 and Pt–Dy 107 resulting in high HER performance. Jin et al ascribed their efficiency and durability for their np-AlNiCoIrMo HEA to the high-entropy stabilizing effect of the quinary compound.…”

Section: Insights Into the Active Structuresmentioning

confidence: 90%

“…The use of simple precursors such as sulfates or chlorides in an aqueous solution to achieve adherent and evenly distributed film at low temperatures makes this approach benign and feasible. 155,156 On the other end, an approach described by Ballesteros et al resulted in phase pure CuZn 5 films on a Ni foil. Using an aqueous solution of copper and zinc sulfate glycine and a conventional threeelectrode set-up, only the size of the spherical crystallites covering the electrode changed depending on the applied potential and the films tested for HER catalysis with moderate activity 154 Alternatively, Jovic et al synthesized phase pure NiSn films of varying morphology with varying the current density which showed remarkable activity for OER when tested in alkaline solution.…”

Section: Electrodepositionmentioning

confidence: 99%

Perspective on intermetallics towards efficient electrocatalytic water-splitting

2021

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Intermetallic Compounds: Liquid‐Phase Synthesis and Electrocatalytic Applications

Yuan

Yang

Lai

et al. 2021

Chemistry A European J

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Characterized by long-range atomic ordering, welldefined stoichiometry, and controlled crystal structure, intermetallics have attracted increasing attention in the area of chemical synthesis and catalytic applications. Liquid-phase synthesis of intermetallics has arisen as the promising methodology due to its precise control over size, shape, and resistance toward sintering compared with the traditional metallurgy. This short review tends to provide perspectives on the liquid-phase synthesis of intermetallics in terms of both thermodynamics and methodology, as well as its applications in various catalytic reactions. Specifically, basic thermodynamics and kinetics in the synthesis of intermetallics will be first discussed, followed by discussing the main factors that will affect the formation of intermetallics during synthesis. The application of intermetallics in electrocatalysis will be demonstrated case by case at last. We conclude the review with perspectives on the future developments with respect to both synthesis and catalytic applications.

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Pulse potentiostatic deposition of Fe Zn based intermetallic coatings and evaluation of its catalytic activity for hydrogen evolution reaction

Cited by 6 publications

References 35 publications

Effects of Si Addition on Interfacial Microstructure and Corrosion Resistance of Hot-Dip Zn–Al–Mg–Si Alloy-Coated Steel

Effects of Si Addition on Interfacial Microstructure and Corrosion Resistance of Hot-Dip Zn–Al–Mg–Si Alloy-Coated Steel

Perspective on intermetallics towards efficient electrocatalytic water-splitting

Intermetallic Compounds: Liquid‐Phase Synthesis and Electrocatalytic Applications

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