What are the coatings of NdFeB magnets?
The neodymium iron boron magnet contains metal neodymium, so it is easy to oxidize. The surface must be processed.
The coatings of NdFeB magnets include nickel, copper, nickel, zinc, gold, silver, epoxy resin, black nickel, and chromium.
Nickel, copper and nickel are usually referred to as NI or nickel. It can also be plated with environmentally friendly nickel and black nickel. It can be divided into bright nickel and dark nickel on its surface.
Electrogalvanized zinc can be divided into blue zinc, white zinc, environmentally friendly zinc, color zinc, and black zinc.
Gold and silver
Gold and silver plating are actually four-layer plating: nickel + copper + nickel + gold/silver