How long can the zinc-plated magnet be in the salt mist?
Galvanized magnets usually refer to the strong rare earth neodymium iron boron magnets. This type of magnet contains a lot of iron. If it is not coated, it will be easily corroded. Even the moisture in the atmosphere will cause failure. The coated neodymium magnet will corrode over time. If the magnet is corroded, it will weaken and crack. Therefore, neodymium iron boron is generally electroplated and provided to customers.
Among the types of NdFeB coatings, zinc plating and nickel plating are more common. Some netizens have asked, can galvanized magnets survive salt spray? How long can the salt spray test take?
First of all, the magnet galvanized can be salt sprayed. At present, there are many kinds of electro-galvanized zinc, including white zinc, blue white zinc, color zinc, black zinc and so on. The current market salt spray test for white zinc is 16 hours, blue white zinc is 24 hours, and black zinc is 12 hours.
If you require the magnet to pass 48,72 hours of salt spray, then nickel plating or epoxy coating is recommended.
