NdFeB magnets are widely used in medical, electronic, mechanical, aerospace and other fields because of their good magnetic properties. However, NdFeB magnets are also very vulnerable to corrosion. So is there a way to avoid NdFeB magnet corrosion? Here is a brief introduction for you.
phosphating
Meaning: Phosphating is a chemical and electrochemical reaction to form a phosphate chemical conversion film process.
Functions:
1, to a certain extent to protect the base material from corrosion.
2, used as primer before painting to improve the adhesion and corrosion resistance of the film layer.
3, in the metal cold processing process of anti-friction and lubrication.
electroplate
Meaning: Electroplating is the process of plating a thin layer of other metals or alloys on the surface of other metals by electrolysis. Electroplating is the process of using electrolysis to attach the surface of metals or other materials to a layer of metal film, thereby preventing metal oxidation, improving wear resistance, electrical conductivity, reflection, corrosion resistance and enhancing aesthetic effects. In addition to NdFeB magnets, the outer layer of many coins is electroplated.
electrophoresis
Meaning: Charged particles move towards electrodes opposite to their electrical properties under the action of an electric field, called electrophoresis. The technique of separating charged particles by their different speeds in an electric field is called electrophoresis. Electrophoresis is one of the most widely used anti-corrosion surface treatment techniques for sintered NdFeB and bonded NdFeB permanent magnets. Electrophoretic coating not only has good adhesion to the porous magnet surface, but also has the characteristics of resistance to salt spray, acid and alkali corrosion.
