Microstructure, corrosion, and mechanical properties of electrodeposited AlFeCoNiCu high entropy alloys-carbon nanotubes composite coating

Microstructure, corrosion, and mechanical properties estimated of AlFeCoNiCu high entropy alloys (HEA) composite coatings with the addition of carbon-Nanotube (CNTs) amounts was studied. HEAs coatings were electro-deposited over low alloy steel (4140 grade) substrate as cathode and the graphite repr...

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Bibliographic Details
Main Authors: AlGraite, A. S., Ali, A. K. Abid
Format: Conference Proceeding
Language:English
Subjects:
Carbon nanotubes
Corrosion
Corrosion resistance
Electrodeposition
Emission analysis
Field emission microscopy
Grain size
High entropy alloys
Low alloy steels
Mechanical properties
Microhardness
Microstructure
Protective coatings
Smoothness
Substrates
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Summary:Microstructure, corrosion, and mechanical properties estimated of AlFeCoNiCu high entropy alloys (HEA) composite coatings with the addition of carbon-Nanotube (CNTs) amounts was studied. HEAs coatings were electro-deposited over low alloy steel (4140 grade) substrate as cathode and the graphite represent the anode electrode at current of 0.16A, time of 15min, and 30C° temperature. After the electro-deposition, the coating samples were mechanically tested by Microhardness, electrochemically tested by Tafel extrapolation, and morphologically tested by field emission scanning electron microscopy and energy dispersive spectroscopy (FESEM and EDS respectively). The results show that corrosion resistance properties of the HEA-CNTs composite coatings conducted in 3.5% NaCl solution increased as compared with HEA coating due to CNTs addition. Detailed microstructural observation by the FESEM test illustrate that CNTs enhanced the smoothness of the coating and leading to granular structure. The microhardness results increased as CNTs added that decreasing the grain size of coatings. Finally, the protective efficiency of coating was enhanced by 37% as CNTs addition.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0156804