Sintered NeFe magnets coating

The sintered neodymium-iron-boron permanent magnet is a chemically active powder metallurgical material, which is characteristic of being hard and brittle easy oxidization and erosion. Based on it’s features the most effective way is apply surface or coating As on the surface of sintered NdFB magnetic material, empty holes or oxidization phase occurred by matching may exist .The surface treatment should undergo pre-treatment procedure and have appropriate plating.


Black Epoxy

Nikel Cuprum

Blue White Zinc

White zinc


Colour zinc

Available Coatings:

Surface Coating Thickness (Microns) Color Resistance


1 Silver Grey Temporary Protection
Nickel Ni+Ni 10-20 Bright Silver> Excellent against Humidity
Zinc Zn 8-20 Bright Blue Good Against Salt Spray
C-Zn Shinny Color Excellent Against Salt Spray
Tin Ni+Cu+Sn 15-20 Silver Superior Against Humidity
Gold Ni+Cu+Au 10-20 Gold Superior Against Humidity
Copper Ni+Cu 10-20 Gold Temporary Protection
Epoxy Epoxy 15-25 Black, Red, Grey Excellent Against Humidity
& Salt Spray
Chemical Ni 10-20 Silver Grey Excellent Against Humidity
Parylene Parylene 5-20 Grey Excellent Against Humidity, Salt Spray.Superior Against Solvents, Gases, Fungi and Bacteria.FDA Approved.