Microstructure and corrosion resistance of high entropy alloy (AlNiCoCrFe) coatings prepared by TIG process
2024

High Entropy Alloy Coatings for Corrosion Resistance

publication Evidence: high

Author Information

Author(s): Ardeshir Mahmoud, Yousefpour Mardali, Sadegh Nourbabksh, Bozorg Mansoor

Primary Institution: Semnan University

Hypothesis

Can high entropy alloy coatings improve the corrosion resistance of plain carbon steel?

Conclusion

The study found that the AlNiCoCrFe coating significantly enhances the corrosion resistance of plain carbon steel, especially at an electrical current of 110 A.

Supporting Evidence

  • At 110 A, the AlNiCoCrFe layer exhibited improved hardness from about 180 to 650 HVN.
  • The corrosion resistance of the steel substrate was significantly enhanced by the AlNiCoCrFe coating.
  • Electrochemical measurements showed optimum corrosion resistance at 110 A electrical current.

Takeaway

This study shows that adding a special coating to steel can make it much better at resisting rust, especially when made with a specific method and current.

Methodology

The coatings were produced using the TIG process on AISI 1050 carbon steel, with varying electrical currents to assess their effects on microstructure and properties.

Limitations

The study primarily focuses on one type of alloy and specific conditions, which may limit the generalizability of the findings.

Digital Object Identifier (DOI)

10.1016/j.heliyon.2024.e41062

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