Electrodeposition of High Entropy Alloy of Ni-Co-Cu-Mo-W from an Aqueous Bath

Ahmadkhaniha, D.; Kruemmling, J.; Zanella, Caterina

doi:10.1149/1945-7111/ac87d5

Cited by 10 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The addition of Ni, W, and Mo to the coating can increase the corrosion resistance in several environments. [30][31][32][33][34] In previous works, 19,[35][36][37] the compositions of W, Mo, and Ni were usually 10 ∼ 20%, 5 ∼ 15%, and 20 ∼ 25%, respectively. However, the price of Ni was much more expensive than that of Fe.…”

mentioning

confidence: 95%

Facile Preparation of Fe-Co-Ni-Mo-W High Entropy Alloy Coatings from An Aqueous Bath by Direct Current Electrodeposition: Microstructure and Performance

Zhang,

Zhong,

et al. 2024

J. Electrochem. Soc.

View full text Add to dashboard Cite

High-entropy alloy (HEA) coatings have been widely investigated because they can significantly improve the surface properties of the substrate. Electrodeposition of HEA coatings in an aqueous bath was considered a promising method. In this study, the Fe-Co-Ni-Mo-W HEA coatings were prepared by aqueous electrodeposition. The effects of the current density on the chemical composition and the physical performance of the HEA coatings were investigated. The results showed that the content of Ni, Mo, and W increased, while the content of Fe decreased as the current density increased from 20 to 80 mA/cm2. The coating deposited at 40 mA/cm2 possessed the best mechanical properties. The microhardness and the wear rate were 4.52 Gpa and 2.05×10-5 mm3/N·m, respectively. The electrochemical test showed that the corrosion resistance of HEA coatings increased with the decrease of current density. All the physical properties of the HEA coatings were superior to 304 stainless steel, suggesting a considerable application potential.

show abstract

mentioning

confidence: 95%

Facile Preparation of Fe-Co-Ni-Mo-W High Entropy Alloy Coatings from An Aqueous Bath by Direct Current Electrodeposition: Microstructure and Performance

Zhang,

Zhong,

et al. 2024

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…The hardness values were compared by the authors with those of Co-Cu alloy films formed in a multilayered Co-Cu film and under constant potentials. Five distinct elements-Ni, Co, Cu, Mo, and W-were deposited as high-entropy alloy coatings by Ahmadkhaniha et al [45] using a single aqueous bath. The impacts of pH, current density, and the complexing agent on the coating composition were investigated.…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition of Nanostructured Co–Cu Thin Alloy Films on to Steel Substrate from an Environmentally Friendly Novel Lactate Bath under Different Operating Conditions

Alsaiari,

Kamel,

Mohamed

2024

Coatings

View full text Add to dashboard Cite

A new lactate bath was proposed to deposit Co–Cu thin alloy films in nanostructure form onto a steel cathode. The deposition bath contained CuSO4.5H2O, CoSO4.7H2O, CH3CHOHCOOH, and anhydrous Na2SO4 at pH 10. The effects of [Co2+]/[Cu2+] molar ratios, lactate ion concentration, current density (CD), and bath temperature on cathodic polarization, cathodic current efficacy (CCE), composition, and structure of the Co–Cu alloys were investigated. The new bath had a high cathodic current efficiency of 85%, which increased with the applied CD. However, it decreased as the temperature increased. The produced coatings have an atomic percentage of Cu ranging from 19.8 to 99%. The deposition of the Co–Cu alloy belonged to regular codeposition. The Co content of the deposit increased with the amount of Co2+ ions in the bath, lactate concentration, and current density but decreased as the temperature increased. Cobalt hexagonal close-packed (HCP) and copper-rich, face-centered cubic (FCC) Co–Cu phases combine to form the polycrystalline structure of the electrodeposited Co–Cu alloy. The average crystallite size ranges between 46 and 89 nm. Energy dispersive X-ray (EDX) examination confirmed that the deposit contained Cu and Co metals. The throwing power and throwing index of the alkaline lactate bath were evaluated and found to be satisfactory.

show abstract

“…Earlier works dealing with the electrosynthesis of HEA-or MPEA-type layers have been reviewed systematically in our previous work (see [22], Introduction, Paragraphs 3 through 6) and in [31]. From the papers listed therein, less than a dozen works dealt with the electroplating of HEA/MPEA-type materials from conventional aqueous baths (excluding the works on composites) [20,21,[32][33][34][35][36][37][38][39][40][41]. In all electrodeposition-related synthesis attempts, at most, a few selected compositions were achieved, occasionally with even dissimilar components.…”

Section: Introductionmentioning

confidence: 99%

Combinatorial Design of an Electroplated Multi-Principal Element Alloy: A Case Study in the Co-Fe-Ni-Zn Alloy System

Nagy,

Péter,

Kolonits

et al. 2024

Metals

View full text Add to dashboard Cite

Multi-principal element alloys (MPEAs) are at the forefront of materials science due to their large variety of compositions, which can yield unexplored properties. Mapping the structure and properties of a compositional MPEA library in a reasonable time can be performed with the help of gradient samples. This type of specimens has already been produced in both bulk and layer forms. However, combinatorial MPEA coatings have not been synthesized by electroplating, although this method has a great potential to deposit a coating on components with complex shapes. In this study, a combinatorial Co-Fe-Ni-Zn coating with the thickness of 4 μm was synthesized by electrodeposition. The material exhibited a well-defined Zn gradient; therefore, the investigation of the effect of Zn concentration on the microstructure and mechanical properties was feasible without the production of an excessively large number of specimens. The Zn concentration was controlled laterally through mass transfer due to the unique geometry of the substrate, and it covered a concentration range of 18–44 at%. The chemical and phase compositions as well as the morphology of the as-processed samples were investigated in multiple locations using X-ray diffraction and scanning electron microscopy. The mechanical performance was characterized by nanoindentation. It was found that for any composition, the structure is face-centered cubic and the lattice constant scaled with the Zn concentration of the deposit. The hardness and the elastic modulus were consistent with values of about 4.5 and 130 GPa, respectively, in the Zn concentration range of 25–44 at%.

show abstract

Electrodeposition of High Entropy Alloy of Ni-Co-Cu-Mo-W from an Aqueous Bath

Cited by 10 publications

References 28 publications

Facile Preparation of Fe-Co-Ni-Mo-W High Entropy Alloy Coatings from An Aqueous Bath by Direct Current Electrodeposition: Microstructure and Performance

Facile Preparation of Fe-Co-Ni-Mo-W High Entropy Alloy Coatings from An Aqueous Bath by Direct Current Electrodeposition: Microstructure and Performance

Electrodeposition of Nanostructured Co–Cu Thin Alloy Films on to Steel Substrate from an Environmentally Friendly Novel Lactate Bath under Different Operating Conditions

Combinatorial Design of an Electroplated Multi-Principal Element Alloy: A Case Study in the Co-Fe-Ni-Zn Alloy System

Contact Info

Product

Resources

About