The microstructure of grain boundaries (GBs) in the commercial NdFeB-based alloy for permanent magnets has been studied. It is generally accepted that unique hard magnetic properties such alloys are controlled by thin layers a Nd-rich phase Nd2Fe14B/Nd2Fe14B GBs. These GB ensure isolation Nd2Fe14B grains from each other. usually supposed contain metallic Nd or intermetallic compounds. However, ...

Neodymium-iron-boron (NdFeB) magnets are the most powerful per unit volume sold in commercial market. Despite increasing demand for clean energy applications such as electric vehicles and wind turbines, disruptive events including COVID-19 pandemic have caused significant uncertainties supply NdFeB magnets. Therefore, this study aims to alleviate risk of shortage containing critical materials, ...

Besides neodymium, the chemical composition of Neodymium–Iron–Boron (NdFeB) permanent magnets possibly contains other rare earth elements (REEs) such as praseodymium, dysprosium, and terbium. Among its applications, NdFeB are essential for Hard Disk Drives (HDDs) in computers data storage, Mobile Phones (MPs), acoustic transducers. Because REEs were classified critical raw materials by European...