Programma: PRIN
Responsabile scientifico per il dipartimento: Samuele Sanna
Struttura principale: DIFA
Data inizio e data fine: dal 30/11/2023 al 30/11/2025
HyPerMag: magneti sostenibili senza terre rare
Il progetto HyPerMag sviluppa magneti permanenti ibridi ad alte prestazioni, privi di terre rare, per applicazioni in mobilità elettrica, energia e industria, con tecniche di sintesi green e materiali nanostrutturati.
HyPerMag: Sustainable Rare-Earth-Free Magnets
HyPerMag develops high-performance hybrid permanent magnets without rare earths, for applications in e-mobility, energy, and industry, using green synthesis and nanostructured materials.
Abstract
The HyPerMag project aims to develop a new generation of rare-earth-free permanent magnets by engineering hybrid nanocomposites. We combine hard and soft magnetic phases—specifically nanostructured hexaferrites and metallic alloys—coupled via exchange or dipolar interactions. The project will focus on designing hybrid powders with tailored morphology, magnetic coupling, and optimized particle size to maximize energy product (BHmax), coercivity, and remanence. The overarching goal is to fabricate bonded and dense permanent magnets with superior performance and stability, capable of replacing AlNiCo and rare-earth-based magnets in moderate-performance technological applications, especially in a circular and sustainable economy framework. The project will demonstrate scalable, green synthesis of nanostructured hybrid materials, and produce prototypes using innovative low-temperature or high-pressure densification techniques that preserve the nanostructure. It will also provide detailed insights into the coupling mechanisms between hard and soft phases combining advanced characterization techniques like NMR, and magnetic hysteresis analysis. These results aim to open industrial applications in sectors such as e-mobility, wind energy, and household appliances, reducing dependence on critical raw materials.