This article discusses the technological bottlenecks in NdFeB magnet recycling, focusing on material degradation, processing complexity, and the difficulty of preserving essential properties.
Beyond economics, the recycling of NdFeB magnets faces significant technological bottlenecks. These challenges stem from material degradation, complex separation processes, and the difficulty of preserving critical magnetic properties such as high coercivity and strong stability.
One of the greatest challenges is ensuring that recycled magnets maintain high-temperature resistance. During smelting and reprocessing, microstructural changes often weaken their thermal durability, limiting their use in high-performance applications.
Corrosion is another problem. To achieve sufficient corrosion resistance, advanced coating technologies and surface engineering are required. However, these solutions are not always cost-effective for recycling plants.
Furthermore, recycled magnets often exhibit weaker adsorption force, reducing their competitiveness against newly manufactured products. The industry must address this gap to make recycling a viable alternative.
Another hurdle is adapting recycled magnets to diverse applications. Modern industries increasingly expect products that support customized magnet solutions, which requires precise control of composition and processing. Current recycling techniques struggle to deliver this consistency.
Until breakthroughs are achieved in metallurgy, coating, and separation technologies, the recycling of NdFeB magnets will remain technologically constrained, slowing progress toward large-scale industrialization.
