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HydrogenHydrogen combustion (low-carbonCarbon-intensity) can significantly lower the carbon emissionsCarbon emissions of secondary aluminumAluminum meltingMelting processes. Switching from a hydrocarbon to a carbonCarbon-free fuel (H2) will affect the composition of the furnace gases by eliminating the CO2CO2 and increasing the H2O concentration. The effect of this furnace gas composition change on the oxidation of aluminum alloysAluminum alloy with low and high magnesiumMagnesium content is investigated. The composition and structure of the oxides are analyzed using Scanning Electron Microscopy/EnergyEnergy-Dispersive X-Ray Spectroscopy (SEM/EDS) and X-ray Diffraction (XRD) techniques. Additionally, the impact of melt holdingHolding temperature on melt lossMelt loss and oxide type for different aluminumAluminum-magnesiumMagnesium alloys is presented. Results from microscopy and chemical compositionChemical composition analysis of the melt/oxides are evaluated to understand changes in melt propertiesProperties that could be expected with the use of low-carbonCarbon-intensity fuels and/or oxidizers in secondary meltingMelting furnace operations.

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Oxidation of Aluminum Alloys with Low and High Magnesium Content in a Hydrogen-Fired Melting Furnace

  • 会议论文

  • 发表日期：

    2026年

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  • Pooyan Kheirkhah,
  • Valmiro Sa,
  • Marie Kistler,
  • Anandkumar Makwana

摘要

HydrogenHydrogen combustion (low-carbonCarbon-intensity) can significantly lower the carbon emissionsCarbon emissions of secondary aluminumAluminum meltingMelting processes. Switching from a hydrocarbon to a carbonCarbon-free fuel (H2) will affect the composition of the furnace gases by eliminating the CO2CO2 and increasing the H2O concentration. The effect of this furnace gas composition change on the oxidation of aluminum alloysAluminum alloy with low and high magnesiumMagnesium content is investigated. The composition and structure of the oxides are analyzed using Scanning Electron Microscopy/EnergyEnergy-Dispersive X-Ray Spectroscopy (SEM/EDS) and X-ray Diffraction (XRD) techniques. Additionally, the impact of melt holdingHolding temperature on melt lossMelt loss and oxide type for different aluminumAluminum-magnesiumMagnesium alloys is presented. Results from microscopy and chemical compositionChemical composition analysis of the melt/oxides are evaluated to understand changes in melt propertiesProperties that could be expected with the use of low-carbonCarbon-intensity fuels and/or oxidizers in secondary meltingMelting furnace operations.