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<p>High Entropy Alloys (HEA) are multi-principal element materials that have been intensively studied over the past decade. In this work, two Al–Fe–Cr–Ni–Cu HEAs were synthesized and processed into thin films by DC magnetron sputtering, and their structural, mechanical and electrochemical properties were systematically evaluated. The coatings exhibited dense, uniform structures with strong adhesion to 304&#xa0;L stainless steel. Coatings hardness was higher than the substrate material. Electrochemical tests in 3.5&#xa0;g/L NaCl solution revealed superior corrosion resistance for the I8-10-derived coating, which achieved the lowest corrosion rate (5.54E-05&#xa0;mm/year) and the highest polarization resistance (5.470.008 Ω), outperforming both the bulk alloys and uncoated substrates.</p>

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Selected high-entropy alloys for thin film deposition, with improved mechanical and corrosion properties

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月28日

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  • Dumitru Mitrica,
  • Laurentiu-Florin Mosinoiu,
  • Arcadii Sobetkii,
  • Stefania Caramarin,
  • Alexandru-Cristian Matei,
  • Laura-Madalina Cursaru,
  • Ioan-Albert Tudor,
  • Beatrice-Adriana Serban,
  • Mihai Ghita,
  • Nicoleta Vitan,
  • Cosmin Romanitan,
  • Elena Olaret,
  • Bogdan Postolnyi,
  • Alexander Pogrebnjak

摘要

High Entropy Alloys (HEA) are multi-principal element materials that have been intensively studied over the past decade. In this work, two Al–Fe–Cr–Ni–Cu HEAs were synthesized and processed into thin films by DC magnetron sputtering, and their structural, mechanical and electrochemical properties were systematically evaluated. The coatings exhibited dense, uniform structures with strong adhesion to 304 L stainless steel. Coatings hardness was higher than the substrate material. Electrochemical tests in 3.5 g/L NaCl solution revealed superior corrosion resistance for the I8-10-derived coating, which achieved the lowest corrosion rate (5.54E-05 mm/year) and the highest polarization resistance (5.470.008 Ω), outperforming both the bulk alloys and uncoated substrates.