Neodymium-Iron-Boron magnets contain approximately 75% iron and are therefore prone to corrosion.
Protective coatings are applied to Neo magnets and the most common one is nickel plating (Ni-Cu-Ni; effectively a triple coating). The current range of coatings available are as follows:-Nickel-Copper-Nickel (Ni-Cu-Ni) [this is the standard coating], Everlube (6102G), Nickel (Ni), Epoxy (Black or Grey), Nickel-Copper-Black Nickel, Zinc (Zn), White Zinc, Coloured (red, green, blue, etc),
Gold (Au) [this is actually NiCuNi plus Gold], Tin (Sn), Parylene C, Titanium (Ti), Silver (Ag)
[this is actually NiCuNi plus Silver], Ni
Cu-Ni plus Rubber, Zn plus Rubber, Ni-Cu-Ni plus Parylene C, PTFE ("Teflon®") in black, white, silvery or grey,
Copper (NiCu or NiCuNiCu), Titanium Nitride (TiN), Chrome (bright/standard or black), Ni-Cu-Ni plus PTFE, Zn plus Everlube, Ni-Cu-Ni plus Everlube, Ni-Cu-Ni plus Epoxy, Tin (Sn) plus Parylene C, Zinc Chromate, <span style="" font-family:"="" new="new">
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