Neodymium magnets, also known as neodymium-iron-boron magnets, are a type of powerful magnet with the chemical formula Nd2Fe14B. They are a man-made permanent magnet and are the strongest permanent magnets at room temperature to date. Sintered neodymium-iron-boron magnets are formed by heating in a vacuum. They are the strongest permanent magnets at room temperature (second only to holmium magnets at absolute zero, but far stronger than all known permanent magnets at room temperature). The material grades range from N35 to N52; various shapes can be processed according to specific requirements: round, square, drilled, magnetic tiles, magnetic rods, convex, trapezoidal, etc. Despite these advantages, the surface is prone to rust, so it usually requires some protective surface treatment: nickel plating, zinc plating, gold plating, epoxy resin coating, etc. The operating environment temperature for ordinary neodymium-iron-boron magnets is below 80 degrees, with a Curie temperature of 320-380 degrees Celsius. They are mainly used in electronics, electrical appliances, packaging, motors, toys, leather goods, automotive mechanics, etc.
