Rubidium magnet generally refers to NdFeB, which is a tetragonal crystal formed by neodymium, iron and boron.
Neodymium magnet was discovered by Sumitomo Sagawa
Rubidium magnet generally refers to NdFeB, which is a tetragonal crystal formed by neodymium, iron and boron.
Neodymium magnet was discovered by Sumitomo Sagawa in 1982. It is a kind of permanent magnet whose magnetism is second only to that of holmium magnet with absolute zero degree, and it is also the most commonly used rare earth magnet. Neodymium magnets are widely used in electronics, motors, medical devices, toys, packaging, hardware machinery, aerospace and other fields. More common are permanent magnet motors, speakers, magnetic separators, computer disk drives, magnetic vibration imaging equipment, instruments and so on.
. In order to avoid corrosion damage, it is necessary to protect the surface of permanent magnet materials, such as electroplating gold, nickel, zinc and tin, and spraying epoxy resin on the surface.
NdFeB is divided into sintered NdFeB and bonded NdFeB. Bonded NdFeB has magnetism and corrosion resistance in all directions. However, sintered NdFeB is easy to corrode and needs to be coated on its surface. Generally, there are zinc plating, nickel plating, environmental protection zinc plating, environmental protection nickel plating, nickel-copper nickel plating and environmental protection nickel-copper nickel plating. Sintered NdFeB generally has axial and radial magnetization, depending on the required working face.