Establishing relationships between bath composition and the properties of amorphous Ni–Mo alloys obtained by electrodeposition

Almeida, Arthur Filgueira de; Souto, Joyce Ingrid Venceslau de; Santos, Mathews Lima dos; Santana, Renato Alexandre Costa de; Alves, José Jaílson Nicácio; Campos, Ana Regina Nascimento; Prasad, Shiva

doi:10.1016/j.jallcom.2021.161595

Cited by 14 publications

(6 citation statements)

References 65 publications

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“…Energy-Dispersive X-ray Spectroscopy performed chemical composition measurements with a spectrometer Shimadzu EDX-720. In addition, current efficiency was analyzed by Faraday's law using the equation expressed in a previous study [25].…”

Section: Chemical Composition and Current Efficiencymentioning

confidence: 99%

“…Li et al (2021) [24] employed 50 𝑚𝐴/𝑐𝑚² in a pulsed electrodeposition methodology and found deposits with a diverse region of amorphous and nanocrystalline solids. In a previous paper, we developed amorphous Ni-Mo by conducting experiments at 60 𝑚𝐴/𝑐𝑚² [25]. The authors found their results by setting the temperature at 30 ℃ [21], −20 ℃ [22], and 70 ℃ (our previous paper).…”

Section: Introductionmentioning

confidence: 99%

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Electrodeposition of crack-free and amorphous Ni-Mo alloys with high Mo content from gluconate baths

Filgueira de Almeida,

Dantas Costa,

Baía de Sousa

et al. 2023

Sci. Plena

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In this article, electroplated Ni-Mo alloys with high Mo content from gluconate baths are presented. Specifically, the influence of current density on the electrodeposition process, which produced crack-free Ni-Mo alloys with high Mo content, was evaluated. Commonly, Ni-Mo electrodeposition is performed in citrate solutions, as citrate ions promote coordination compounds with greater stability compared to mono and bivalent ligands. However, due to the high internal stress caused by Mo in the coating when its content is very high, microcracks are formed along the surface, causing defects in the deposit. Gluconate baths have been proven to produce crack-free alloys, even when current density is high. The deposits were evaluated for chemical composition by Energy-Dispersive X-ray Specrometry (EDS) and surface morphology by electron microscopy using a Scanning Electron Microscope (SEM). Furthermore, the deposition process was evaluated for current efficiency, and a reaction mechanism was proposed based on observations acquired by other authors. The highest Mo content obtained was 43% by weight. The highest current efficiency was 26%, obtained at 30 mA/cm².

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Section: Chemical Composition and Current Efficiencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrodeposition of crack-free and amorphous Ni-Mo alloys with high Mo content from gluconate baths

Filgueira de Almeida,

Dantas Costa,

Baía de Sousa

et al. 2023

Sci. Plena

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“…With the increase in the pH value, the current efficiency first increases and then decreases. Low pH (pH < 7) leads to high H + content, which is prone to a hydrogen evolution reaction [24], reducing current efficiency. When the pH value is too high, the current efficiency decreases due to a decline in the deposition quality.…”

Section: Effect Of the Ph Valuementioning

confidence: 99%

mentioning

confidence: 99%

Preparation and Electrochemical Behavior of an Amorphous Co–Mo Coating with a High Content of Mo

Tian

et al. 2022

Coatings

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At present, alloy materials are being widely used as wear-resistant coatings due to good mechanical properties. In this paper, electrodeposition was used to prepare a Co–Mo coating. The influence of parameters on the phase, morphology, composition, and property of the coating has been studied, and the electrochemical mechanism has been deeply studied. The study of process parameters found that when the concentration of Na2Mo4 is 0.05 mol/L, the concentration of C6H5Na3O7 is 0.15 mol/L, the pH of the solution is 7, and the temperature is 50 °C, the content of Mo in a Co–Mo coating is 39.56%, and the microhardness reaches the maximum value of 503 HV. The study of electrochemical behavior found that the optimization of process parameters bringsa positive shift in the reduction potential, an increase in the exchange current density, and a decrease in charge transfer impedance. The microhardness of a Co–Mo coating prepared with the leaching solution of Mo-containing waste after component control of the plating solution is 483.6 HV, which is valuable to the high-value recycling of Mo secondary resources.

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“…The general application of different alloying elements such as Si can be found in numerous research works. [ 26–75 ] It has been indicated that Si affects the ability to form amorphous more than P element, [ 76 ] Li et al [ 76 ] reported an increase in the Si/P ratio raises the amorphous formation ability(AFA). AddingSior P decreases the first crystallization onset temperature, while a reduction in the Si/P ratio leads to higher thermal stability in the second crystallization.…”

Section: Introductionmentioning

confidence: 99%

Fe‐Based Amorphous Alloy Coatings: A Review

Noorbakhsh,

Ostovan,

Toozandehjani

2024

Adv Eng Mater

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Fe‐based amorphous alloy coatings (Fe‐AACs) have exhibited appropriate corrosion and wear resistance and improve the performance of material surfaces. This study summarizes the advances related to Fe‐based amorphous alloys pertaining to their chemical compositions and manufacturing processes and their associated effect on the amorphous structure, microstructure and properties. In particular, Fe‐based amorphous alloy coatings produced by laser cladding are investigated in order to study the effect of amorphous structure, partial crystallization, and composition on the microstructure, hardness, corrosion and wear resistance of these coatings. In addition, the effect of laser parameters (power and scanning speed) on the geometric and metallurgical characteristics of produced amorphous coatings are also covered.This article is protected by copyright. All rights reserved.

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Establishing relationships between bath composition and the properties of amorphous Ni–Mo alloys obtained by electrodeposition

Cited by 14 publications

References 65 publications

Electrodeposition of crack-free and amorphous Ni-Mo alloys with high Mo content from gluconate baths

Electrodeposition of crack-free and amorphous Ni-Mo alloys with high Mo content from gluconate baths

Preparation and Electrochemical Behavior of an Amorphous Co–Mo Coating with a High Content of Mo

Fe‐Based Amorphous Alloy Coatings: A Review

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