In the selection of neodymium iron boron strong magnet coating, zinc plating and nickel plating are more common. Some customers will ask when choosing the coating that nickel plating on magnets can pass the 48 hour salt spray test, and I need a longer time salt spray test, such as 72 hours. Is nickel plating OK?
Can nickel plating on NdFeB magnets withstand salt spray test for 72 hours?
Nickel plating is difficult. Some customers have high requirements for salt spray resistance and acid-base resistance. For example, they can choose Perrin coating for 72 hours, which is more secure.
Some people still have doubts, why not recommend the use of epoxy?
Resistance to salt spray for 72 hours, nickel plating and epoxy are not guaranteed, so perrelin is recommended.
If you need to resist salt spray for 12 hours, zinc plating is recommended. At present, there are many kinds of zinc plating, including white zinc, blue white zinc, blue zinc, color zinc and black zinc. The current market salt spray test white zinc 16 hours: blue white zinc 24 hours: Color zinc 48 hours: black zinc 12 hours.
After 48 hours of salt spray, customers are generally recommended to use nickel plating. At present, the basic process of zinc plating is nickel copper nickel, which can ensure that the magnet will not be damaged in the case of corrosion.
Post time: Jan-07-2021