Surface Coating of Sintered Neodymium Magnet
Nickel
Permanent Nd Magnet with NiCuNi coating application, it has excellent humidity, heat & salt spray resistance.
Color Zinc
Permanent Nd Magnet with Color Zinc coating application, it has excellent salt spray resistance.
Black Epoxy
Permanent Nd Magnet with Epoxy coating application, it has excellent humidity, heat & salt spray resistance and excellent adhesion.
Gold
Permanent Nd Magnet with Gold coating application, it has very good looking, Good salt spray resistance.
Phosphated
Permanent Nd Magnet with Phosphated or Passivation coating application, the coating is only for Temporary Protection.
Everlube
Permanent Nd Magnet with Everlube coating application, it has excellent salt spray resistance and excellent adhesion.
Passivation
Permanent Nd Magnet with Phosphated or Passivation coating application, the coating is only for Temporary Protection.
Zinc
Permanent Nd Magnet with Zinc coating application, it has regular protection but low cost.
Black Nickel
Permanent Nd Magnet with Black Nickel coating application, it has regular protection but low cost.
Silver
Permanent Nd Magnet with Silver coating application.
Surface Coating of Bonded Neodymium Magnet

Surface Coating of Bonded Neodymium Magnet
The electroplating flows are as follow:
It may take a complete flow and a long time to do chamfering and cleaning, so electroplating needs a period to proceed.
The available coatings are as follows:
The most popular coatings are Zinc plating, Nickel plating, Epoxy and Passivation, the other coatings are Tin plating, Chromium plating, Gold plating, and Ag plating etc.

Sintered Neodymium Magnet Coating
Available Coatings: | ||||
Surface | Coating | Thickness
(Microns) |
Color | Resistance |
Passivation | 1 | Silver Grey | Temporary Protection | |
Nickel | Ni+Ni | 10-20 | Bright Silver | Excellent against Humidity |
Ni+Cu+Ni | ||||
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 |
Ni+Cu+Epoxy | ||||
Zn+Epoxy | ||||
Parylene | Parylene | 5-20 | Grey | Excellent Against Humidity, Salt Spray.
Superior Against Solvents, Gases, Fungi and Bacteria. FDA Approved. |