NdFeB surface treatment:
With the sintered NdFeB Japan, Germany, the European Union, etc. in the patent technology of the thaw, China's major sintering manufacturers of concerted efforts, sintered NdFeB product grade has increased dramatically. As the high-tech applications of its comprehensive performance continues to improve, the requirements of its sintered NdFeB surface treatment has also increased dramatically, the traditional treatment methods have been unable to meet the requirements of the industrial chain progress. The research institutes such as Electronic Science and Technology University, Sichuan University, Jiaotong University, and Rexroth Lace, etc., started from the microscopic molecular structure, and perfected the principle of the surface treatment and the development of the industrial application process from the essence, and made a breakthrough of the key technology after 4 years' efforts. Nano (3010) chelate film without plating treatment, the technology is an original technology process, the nano-film layer contains active groups with strong resistance to moisture, oxygen, chlorine ions (Cl), carbon dioxide (co2) and so on. Corrosion resistance and adhesion to organic resins are greatly improved. Its excellent surface physicochemical properties will have a significant impact on application areas.
In December 2013, the treatment process was systematically tested by Sichuan University and Chinese Academy of Sciences. Its corrosion resistance can meet the use in marine climate conditions for 20-30 years, can be widely used in sea-based wind power generation. Surface bonding force of more than 20Mpa, can be widely used in permanent magnet high-speed motors, special motors, electric vehicle motors, ultra-high voltage, high-voltage DC power supply system, fast charging system, aerospace and military industries and other fields.
Common surface treatment methods:
1, nano (Royce3010) chelating film without plating treatment; (3010 refers to the film containing more than three more than three active chelating groups, film thickness of 10 nanometers);
2,Phosphatization;
3,Electroplating;
4,Electrophoresis;
5,Vacuum vapor deposition;
6,Chemical plating;
7,Organic spraying;