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Microstructure and corrosion resistance of highly oriented electrodeposited CoNiFe medium-entropy alloy films by Wenyi Huo; Shiqi Wang; Feng Fang; Shuyong Tan; Łukasz Kurpaska; Zonghan Xie; Hyoung Seop Kim; Jianqing Jiang is a Engineering article available to read on EtoBox.

What is Microstructure and corrosion resistance of highly oriented electrodeposited CoNiFe medium-entropy alloy films about?

The medium-entropy alloy is a newly intriguing material showing superb properties. A simple, one-step method was developed to electrodeposit CoNiFe medium-entropy alloy films from a sulfate and citrate bath. The microstructure and corrosion resistance were investigated in CoNiFe films with varying deposition current densities. It shows the facecentered cubic structure with a preferential orientation. HRTEM-EDS observations further show information on the nanostructure and element distribution. The films exhibit a strong corrosion resistance in 3.5 wt.% NaCl solution. The films electrodeposited with a current density of 44.4 A/dm 2 shows a low self-corrosion current density of 4.72 Â 10 À6 A,cm À2 in 3.5 wt.% NaCl solution. The corrosion mechanism was proposed in combination with electrochemical impedance spectroscopy results. The outstanding properties were attributed to the near-equimolar ternary components. The results lay a solid foundation for developing of highly oriented medium-entropy alloy films with strong corrosion resistance.

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Author

Wenyi Huo; Shiqi Wang; Feng Fang; Shuyong Tan; Łukasz Kurpaska; Zonghan Xie; Hyoung Seop Kim; Jianqing Jiang

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)