This article reviews the sustainability challenges and opportunities associated with High-Entropy Materials (HEMs), which are alloys with multiple principal elements exhibiting remarkable structural and functional properties. Despite their potential in critical applications, HEMs face issues related to high production costs, energy intensity, and carbon emissions. Strategies for improving their sustainability include utilizing lower-carbon feedstocks, recycling scrap and industrial waste, and optimizing synthesis techniques to reduce reliance on expensive, rare elements. The high solubility and compositional flexibility of HEMs enable the use of mixed and contaminated materials, offering pathways to more sustainable manufacturing. The authors also emphasize thermodynamic and kinetic design strategies to balance material performance with impurity tolerance, proposing HEMs as a promising avenue for developing advanced, eco-friendly materials for demanding applications.
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https://www.science.org/doi/10.1126/sciadv.ads3926
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