Electrodeposition of a Novel Ternary Fe–W–Zn Alloy: Tuning Corrosion Properties of Fe–W Based Alloys by Zn Addition

Abstract

Herein, we report the electrodeposition of a novel ternary Fe-W-Zn alloy. Ternary alloys with compositions of at.%) W-(1.73-8.16 at.%) Zn were prepared by potentiostatic deposition in citrate-ammonia aqueous solution equipped with an anode chamber. The electrodeposition behavior of the ternary Fe-W-Zn alloys and the effect of the Zn addition were analyzed by cyclic voltammetry and in situ electrochemical quartz crystal microbalance measurements. Ternary alloys with glossy appearances and smooth surface morphologies were fabricated, with a maximum current efficiency of approximately 43%. Incorporating Zn into the Fe-W alloy structure transformed the alloy structure into an amorphous-like nanocrystalline structure and refined the crystal size to a minimum of 1.45 nm. Potentiodynamic polarization test results showed that the corrosion resistance of the ternary Fe-W-Zn alloy with approximately 2 at.% Zn was distinctly improved compared to the binary Fe-W alloy, both in 1 M H 2 SO 4 solution and neutral 3 mass% NaCl solution. Notably, the corrosion resistance was even better than Ni-W alloy in 1 M H 2 SO 4 solution, with its unique passivation behavior. The incorporation of Zn was found to be effective for tuning the corrosion properties of Fe-W alloys.

Bismuth-based liquid metals: advances, applications, and prospects

“…where w is the mass of the sediment (g), F is the Faraday constant 96 485C mol À1 , Q is the charge transferred (C), C x is the weight fraction of each element in the sediment, N x is the ionic valence of each element, and M x is the atomic mass of each element g mol À3 . 113 Pulsed electrodeposition makes it easier to obtain nanocrystalline coatings compared to DC electrodeposition. Pulsed electrodeposition can be used to obtain nanocrystalline coatings with special properties by controlling parameters such as waveform, frequency, on/off ratio, and average current density.…”

“…The cathodic current efficiency ( C eff ) of the two preparation methods can be calculated using Faraday's induction law:where w is the mass of the sediment (g), F is the Faraday constant 96 485C mol −1 , Q is the charge transferred (C), C x is the weight fraction of each element in the sediment, N x is the ionic valence of each element, and M x is the atomic mass of each element g mol −3 . 113…”

Comparative Analysis of Metal Electrodeposition Rates towards Formation of High-Entropy WFeCoNiCu Alloy

“…There has been no single original work recently that has compared the electrodeposition efficiencies of the most basic binary alloys of tungsten, let alone of materials consisting of three or more components. Most original papers cover only selected binary or ternary alloys, focusing mainly on their applicational properties [5][6][7][8][9][10]. The range of possible applications of tungsten alloys obtained via induced codeposition is broad indeed.…”

“…The range of possible applications of tungsten alloys obtained via induced codeposition is broad indeed. The most common applications of electrodeposited tungsten alloys include protective and decorative layers, especially as anti-corrosive protective coatings for steel surface enrichment, a substitute for hard chrome coatings [5][6][7]. Another important application for electrodeposited tungsten alloys is obtaining catalytic layers, mainly for hydrogen evolution [8][9][10].…”

Electrodeposition of Amorphous Molybdenum Oxide on Iron-Group Element Based Plating and its Novel Application as a Corrosion Protective Coating

“…8 A promising application of these alloys is as an alternative material for hard Cr plating. Studies regarding the electrodeposition of binary alloys, such as Ni-Mo, 9,10 Ni-W, 11,12 Co-W, 13 and Fe-W, 14 and ternary alloys, such as Ni-W-P, 15 Ni-Fe-W, 16,17 and Fe-W-Zn, 18,19 have been widely conducted for the replacement of hard Cr plating based on its high hardness, wear resistance, heat resistance, and corrosion resistance of these alloys. Compared to Mo-based alloys, W-based alloys have been more widely studied owing to the superior properties of W compared to those of Mo (higher melting point, heat resistance, and mechanical strength) and the difference in the reduction mechanism of metallic Mo and W during the induced co-deposition process.…”