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.
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Magnet Gold Plating
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.