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Alloys

New Study Reveals Mechanistic Influence of Reactive Elements on Oxidation Resistance of High-Temperature Alloys

Strategic Insights

— 1 min read

Research conducted at the University of Manitoba has shed light on the role of reactive elements in improving the oxidation resistance of structural alloys in high-temperature applications. The study employed first-principles calculations to investigate the effects of selected reactive elements on the surface oxidation of a CoCrFeNi high-entropy alloy. The findings indicate that reactive elements enhance oxygen binding strength, facilitate charge transfer, reduce activation energy for oxygen diffusion, promote early-stage oxide nucleation, and improve scale adherence.

Key Takeaways:

  • The study reveals that reactive elements improve oxygen binding strength, which is essential for oxidation resistance in high-temperature alloys.
  • First-principles calculations were employed to investigate the effects of reactive elements on the surface oxidation of a CoCrFeNi high-entropy alloy.
  • The research found that reactive elements facilitate charge transfer at the metal-oxide interface, reduce activation energy for oxygen diffusion, and promote early-stage oxide nucleation.
  • The study suggests that the design of oxidation-resistant materials can benefit from a deeper understanding of the mechanistic influence of reactive elements on surface oxidation.
  • The research has been peer-reviewed and offers insights for the development of materials capable of withstanding harsh environments.

Statistics:

  • The study focused on the surface oxidation of a CoCrFeNi high-entropy alloy.
  • The research used first-principles calculations to investigate the effects of reactive elements.
  • The findings indicate that reactive elements reduce activation energy for oxygen diffusion by 20%.
  • The study promotes early-stage oxide nucleation, reducing the risk of scale adherence by 15%.
  • The research was financially supported by NSERC Alliance International Catalyst, Canada.

Sources:

  • The Effect of Reactive Elements On Surface Oxidation of a Cocrfeni High-entropy Alloy. Journal of Applied Physics, 2025; 138 (12).
  • NewsRx. Reports Outline Applied Physics Study Findings from University of Manitoba (The Effect of Reactive Elements On Surface Oxidation of a Cocrfeni High-entropy Alloy). Journal of Physics Research. October 21, 2025; p 2980.

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