Sintered NdFeB magnets are well known for being highly susceptible to oxidation and corrosion, which can eventually lead to a decline—or even a complete loss—of magnetic performance. For this reason, proper surface protection is essential before the magnets are put into use. In one of our previous articles, Preventing Corrosion: The Essential Guide to Neodymium Magnet Coating/Plating, we introduced the major surface-finishing options for sintered NdFeB magnets. In addition to electroplating, NdFeB magnets can also be treated using electroless plating,