Microstructure and corrosion resistance of highly <111> oriented electrodeposited CoNiFe medium-entropy alloy films
SCIE
SCOPUS
- Title
- Microstructure and corrosion resistance of highly <111> oriented electrodeposited CoNiFe medium-entropy alloy films
- Authors
- Huo, Wenyi; Wang, Shiqi; Fang, Feng; Tan, Shuyong; Kurpaska, Lukasz; Xie, Zonghan; Kim, Hyoung Seop; Jiang, Jianqing
- Date Issued
- 2022-09
- Publisher
- Elsevier Editora Ltda
- Abstract
- © 2022 The Author(s).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 face-centered cubic structure with a <111> 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/dm2 shows a low self-corrosion current density of 4.72 × 10-6 A·cm-2 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.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/115060
- DOI
- 10.1016/j.jmrt.2022.07.175
- ISSN
- 2238-7854
- Article Type
- Article
- Citation
- Journal of Materials Research and Technology, vol. 20, page. 1677 - 1684, 2022-09
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