The surface coating of the neodymium magnet mainly plays a protective role to avoid oxidation in air, and the magnet after plating treatment improves visual appearance. A gold-plated coating is used as an FDA-approved medical coating for in-vivo use, and it is used as a base coat for Ni-Cu-Ni. Like the nickel coating, it helps protect the magnet from corrosion in the ambient air, but can also provide mild protection from moisture, water or salt water.

• Features:
• The maximum working temperature is about 200°C.