WHY ARE MOST NEODYMIUM PLATED OR COATED?

WHY ARE MOST NEODYMIUM PLATED OR COATED?

Neodymium magnets are mainlyconstructed of Neodymium, Iron and Boron. Iron can oxidize very easily whenexposed to moisture and will rust over time. Therefore we have most of ourneodymium magnets nickel-plated to protect from oxidation.