Corrosion prevention methods of neodymium iron boron

Corrosion is widely used in many industries, and it is no exception because neodymium iron boron is easily corroded. Therefore, most finished products require electroplating or painting. Conventional surface treatments include nickel plating (nickel copper nickel), zinc plating, aluminum plating, electrophoresis, etc. If working in a closed environment, phosphating can also be used.

NdFeB is currently a widely used and rapidly developing magnet product. Neodymium iron boron has been widely used since its invention, but its usage time does not exceed 20 years. Due to its high magnetism and ease of processing, its price is not very high, so its application field is rapidly expanding. At present, the commercialized neodymium iron boron magnetic energy product can reach 50 megawatts, which is 10 times that of ferrite.

Compared with other permanent magnet materials such as ferrite, neodymium iron boron has excellent magnetic properties. Its magnetic energy products are much higher than other types of magnets, so it can be called the "first generation magnetic king". Neodymium iron boron has a very high saturation magnetization strength BS (BS=16KGS) and magnetic crystal anisotropy field HA (HA=73KOE). Neodymium magnet products are widely used in packaging, toys, gifts and crafts, fitness magnetic control vehicles, motors, micro motors, computers, instruments, meters, motorcycles, cameras, clocks, sound, household appliances, office automation, magnetic therapy, and various fields of daily life.

Neodymium iron boron also belongs to powder metallurgy products, and its processing method is similar to samarium cobalt. At present, the maximum operating temperature of neodymium iron boron is about 180 degrees Celsius. In severe environmental applications, it is usually recommended not to exceed 140 degrees Celsius.

These are the neodymium iron boron anti-corrosion technologies we have introduced in detail. Due to its high magnetism, neodymium iron boron is used in many occasions to replace other magnetic materials to reduce the volume of the product. If ferrite magnets were used, the current size of mobile phones would probably not be less than half a brick.