Rare Earth Metals
•Neodymium (Nd): It is one of the key components of sintered Nd - Fe - B magnets and makes significant contributions to the magnetism of the magnets, enabling the magnets to obtain a relatively high magnetic energy product and coercive force.
•Praseodymium (Pr): It can partially replace neodymium, which helps to improve the performance of the magnets and optimize the cost to some extent.
•Dysprosium (Dy) and Terbium (Tb): They are mainly used to improve the coercive force and temperature stability of the materials. However, due to the high prices of these two elements, the production cost of the magnets will increase. Currently, the industry is also trying to reduce their addition amounts through methods such as grain boundary diffusion technology.
Iron (Fe)
As the main matrix element, it interacts with rare earth metals and others to form intermetallic compounds with specific magnetic properties, which is of great significance for the overall performance and cost control of the magnets.
Boron (B)
Although its content is small, it plays a crucial role in forming intermetallic compounds with a tetragonal crystal structure. It enables the compounds to have high saturation magnetization intensity, high uniaxial anisotropy, and a high Curie temperature, thus endowing the magnets with excellent magnetic properties.
Other Metals
Metals such as cobalt (Co) and aluminum (Al) can partially replace iron and are used to improve certain properties of the magnets or reduce costs, etc.
