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This work aims to explore the use of recycled electrical waste to create corrosion-resistant medium-entropy alloys through vacuum arc melting.

Repurposing electrical waste materials for developing corrosion-resistant medium entropy alloys

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Research demonstrates corrosion resistance of aluminum-based medium-entropy alloys from electrical waste, indicating a sustainable material solution.

This work aims to explore the use of recycled electrical waste to create corrosion-resistant medium-entropy alloys through vacuum arc melting.
Produced aluminum-based medium-entropy alloys using vacuum arc melting from recycled electrical waste.
Evaluated corrosion performance in a 3.5% NaCl solution with and without inhibitors (Mn or Zn).
Conducted phase composition and microstructural characterization for each alloy prior to corrosion testing.
Performed hardness tests and post-corrosion surface morphology analysis to assess alloy integrity.
The Al35Cu15Fe5.5Cr3.5Si alloy showed the lowest corrosion rate in 3.5% NaCl at 0.4 μm/y.
With Zn inhibitor, the same alloy had a corrosion rate of 145.7 μm/y.
The Al30Cu15Fe5.5Cr5.5Si alloy displayed a corrosion rate of 121.7 μm/y with Mn inhibitor.
Post-corrosion examination revealed uniform corrosion and localized pitting across all MEAs.

Raji et al. (2026) studied this question.

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Research demonstrates corrosion resistance of aluminum-based medium-entropy alloys from electrical waste, indicating a sustainable material solution.