Neodymium magnet coating
Permanent magnet neodymium magnets are mainly composed of rare earth elements such as neodymium (20%), iron (70%) and boron (10%). The elements in the magnet can rust and oxidize if exposed to air. To protect or slow the neodymium magnets from corrosion and to strengthen the fragile neodymium magnet material, it is generally preferred to coat the magnets. There are various options for coatings, but nickel is the most common and usually preferred.
Our nickel plated neodymium magnets are actually three layers of nickel plated copper nickel. This triple coating makes our magnets more durable than the more common single nickel plated magnets. Some other coating options are zinc, tin, copper, epoxy, silver and gold. Our gold plated magnets are actually quadruple nickel, copper, nickel and gold finish.
Some customers use neodymium magnets in confined spaces, such as in generators. They will not require coating to save costs. We will apply anti-rust oil to the surface and vacuum packing before delivery.
GME has its own coating factory, and the coating processing technology is at the leading level in the magnetic industry. The coating types are very complete, the production capacity is very large, and the R&D innovation level is also very strong. The process control is very strict, which ensures the anti-corrosion and bonding of the coating and the NdFeB magnet.
