Green coating technology makes NdFeB magnet materials shine

In recent years, the environmental awareness of all sectors of society is increasingly strengthened. The development of green coating technology adapted to the protection of rare earth permanent magnet materials is related to the healthy development of the industry in the future.

"The research on electroplating technology, process and equipment to improve performance and reduce emissions is the common concern of the domestic NdFeB industry.

The research and application of physical vapor deposition magnetron sputtering technology is aimed at improving the manufacturing capacity of China's magnet protection technology and large-scale rare earth permanent magnet material surface protection equipment." Chinese Academy of Sciences researcher, doctoral supervisor Xia Yuan said.

NdFeB material surface protection needs to be upgraded

As is known to all, ndfeb permanent magnetic material with high remanence, high coercive force, high magnetic energy product such as outstanding magnetic energy, therefore, ndfeb permanent magnet material is widely used in wind power, electric vehicles, energy saving motor, smart phones, intelligent manufacturing equipment (industrial robots), aerospace and other high-tech fields at the core of the device, has become a high and new technology, new industry, one of the important material base of social progress, the permanent magnetic material industry became a strategically important industry.

Relevant statistics show that China is rich in rare earth resources, especially the proven reserves of neodymium, the main raw material in NdFeB magnetic powder, account for 48% of the world's reserves. In terms of NdFeB permanent magnet products, China is also the world's largest production country, but it is worth noting that the relevant technical indicators of domestic NdFeB magnets and foreign high-performance NdFeB permanent magnet products have a certain gap.

Put a green coat on NdFeB

Wang qiang told reporters a fact: at present, the main problems of ndfeb industry ndfeb products is low and the quality is poor, the average price of foreign products is 3 ~ 4 times of domestic products, and improve the surface protection level of ndfeb, meet the requirements of various applications, is to improve the summary of product quality, performance, and improve the grade of one of the key.

Using green and pollution-free physical vapor deposition technology is the future development direction of NdFeB protection. It has built China's first annual 100-ton continuous green pollution-free industrial demonstration production line of regulated vapor deposition. 

The products can not only meet the requirements of wind power, electric vehicles and other emerging application fields, but also meet the needs of high-tech fields with high-temperature samarium cobalt permanent magnet protected by physical vapor deposition. 

It is of great significance to promote the industrialization of green coating and to improve the quality of rare earth permanent magnet materials in China.