Effect of Si Addition on Structure and Corrosion Resistance of FeCoNiCr High-Entropy Alloy Coating DOI Open Access
Wenqiang Li, Jie Lian, Dengfeng Wang

et al.

Materials, Journal Year: 2024, Volume and Issue: 18(1), P. 72 - 72

Published: Dec. 27, 2024

In this study, Fe60Co10−xNi15Cr15Six (x = 0, 4, and 8) powders were successfully prepared using the aerosol method employed to produce high-entropy coatings on Q235 steel via laser cladding. The microstructure phase composition of analyzed scanning electron microscopy, energy-dispersive X-ray spectroscopy, diffraction. Corrosion resistance potential evaluated through electrochemical analysis Kelvin probe force microscopy. results show that exhibit excellent metallurgical bonding with no visible porosity or cracks. coating primarily consists an FCC structure; however, as Si content increases, structure transitions a mixed + BCC phase. addition also refines grain size in alloy system. Electrochemical reveals Si0 Si4 similar corrosion behavior, while Si8 shows significant drop potential, reducing its resistance. As refinement leads more boundaries, but decreases due lower performance compared Co. Considering both cost resistance, offers balance low

Language: Английский

Recent developments in CoCrFeNi-based high entropy alloy coatings: design, synthesis, and properties DOI
Fengling Zhang, Xiaohong Chen, He Liu

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179193 - 179193

Published: Feb. 1, 2025

Language: Английский

Citations

2
Study on the effect and growth mechanism of micro-arc oxidation coating on AlCoCrFeNi high entropy alloy DOI
Fan Yang, Chao Du,

Siyuan Tao

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179469 - 179469

Published: Feb. 1, 2025

Language: Английский

Citations

0
Tuning Nanocrystalline Heterostructures for Enhanced Corrosion Resistance: A Study on Electrodeposited Ni Coatings DOI Open Access
Wenyi Huo, Zeling Zhang, Xuhong Huang

et al.

Coatings, Journal Year: 2025, Volume and Issue: 15(5), P. 534 - 534

Published: April 30, 2025

Tailoring the microstructural heterogeneity of metallic coatings is a promising strategy for enhancing their corrosion resistance; however, its systematic optimization remains underexplored. Here in, we present one-step, scalable electrodeposition to fabricate Ni with tunable nanocrystalline heterostructures on Cu substrates by varying current density from 1 mA/cm2 50 mA/cm2. The coating 10 mA/cm2, featuring heterogeneous nanograin structure coexisting small and large grains, exhibited optimal resistance in 3.5 wt.% NaCl solution, low self-corrosion 4.48 µA/cm2. Electrochemical impedance spectroscopy (EIS) molecular dynamics (MD) simulations revealed that heterostructure dispersed Cl− adsorption sites promoted passivation. High-resolution transmission electron microscopy (HRTEM) as increased product transitioned crystalline NiOOH an amorphous structure, which correlated reduced resistance. microstructure enhances durability, offering cost-effective alloy-free alternative offshore applications. These findings provide theoretical experimental basis designing advanced corrosion-resistant coatings.

Language: Английский

Citations

0
Mechanical properties, antifriction and anticorrosion of electrodeposited FeCoNiCr high-entropy alloy coatings under different current density DOI
Huizhong Ma,

Xingke Sun,

Na Li

et al.

Materials Science and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

FeCoNiCr high-entropy alloy coatings are prepared using the direct current electrodeposition method and effect of densities on surface morphology, phase structure, hardness, elastic modulus, wear resistance, corrosion resistance has been investigated. The results have demonstrated that density a significant impact composition, structure properties these coatings. With increasing density, morphology changes from flat to cauliflower-like coexistence FCC amorphous confirmed. When was 10 A/dm 2 , highest hardness (600.9 HV), lowest friction coefficient (0.2121) rate (2.137 × −5 mm 3 /N.m), as well (I corr = 28.4 μA/cm Ecorr −0317 V) obtained. Simultaneously, it high modulus 47 GPa determined by AFM. element grain size play key role in

Language: Английский

Citations

0
Effect of Si Addition on Structure and Corrosion Resistance of FeCoNiCr High-Entropy Alloy Coating DOI Open Access
Wenqiang Li, Jie Lian, Dengfeng Wang

et al.

Materials, Journal Year: 2024, Volume and Issue: 18(1), P. 72 - 72

Published: Dec. 27, 2024

In this study, Fe60Co10−xNi15Cr15Six (x = 0, 4, and 8) powders were successfully prepared using the aerosol method employed to produce high-entropy coatings on Q235 steel via laser cladding. The microstructure phase composition of analyzed scanning electron microscopy, energy-dispersive X-ray spectroscopy, diffraction. Corrosion resistance potential evaluated through electrochemical analysis Kelvin probe force microscopy. results show that exhibit excellent metallurgical bonding with no visible porosity or cracks. coating primarily consists an FCC structure; however, as Si content increases, structure transitions a mixed + BCC phase. addition also refines grain size in alloy system. Electrochemical reveals Si0 Si4 similar corrosion behavior, while Si8 shows significant drop potential, reducing its resistance. As refinement leads more boundaries, but decreases due lower performance compared Co. Considering both cost resistance, offers balance low

Language: Английский

Citations

0