Surface Coating of Sintered Neodymium Magnet

Nickel

Nickel

Permanent Nd Magnet with NiCuNi coating application, it has excellent humidity, heat & salt spray resistance.

Color Zinc

Color Zinc

Permanent Nd Magnet with Color Zinc coating application, it has excellent salt spray resistance.

Black Epoxy

Black Epoxy

Permanent Nd Magnet with Epoxy coating application, it has excellent humidity, heat & salt spray resistance and excellent adhesion.

Gold

Gold

Permanent Nd Magnet with Gold coating application, it has very good looking, Good salt spray resistance.

Phosphated Passivation

Phosphated

Permanent Nd Magnet with Phosphated or Passivation coating application, the coating is only for Temporary Protection.

Everlube

Everlube

Permanent Nd Magnet with Everlube coating application, it has excellent salt spray resistance and excellent adhesion.

Passivation

Passivation

Permanent Nd Magnet with Phosphated or Passivation coating application, the coating is only for Temporary Protection.

Zinc

Zinc

Permanent Nd Magnet with Zinc coating application, it has regular protection but low cost.

Black Nickel

Black Nickel

Permanent Nd Magnet with Black Nickel coating application, it has regular protection but low cost.

Silver

Silver

Permanent Nd Magnet with Silver coating application.

Surface Coating of Bonded Neodymium Magnet

MPCO can provide epoxy resin electrophoresis, acrylic resin electrophoresis, epoxy resin spraying, Teflon spray, Parry deposition, vacuum soaking and other coating and surface treatment technology to meet the requirements of corrosion resistance, solvent resistance and friction resistance in the long-term and different use environment. Specific coating requirements can be selected and stacked according to the environmental requirements.

 

Surface Coating of Bonded Neodymium Magnet

Surface Coating of Bonded Neodymium Magnet

Due to the low corrosion resistance of NdFeB magnets, we need to do surface treatment before applications.

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.

Available coatings for sintered Neodymium Magnet:

Sintered Neodymium Magnet Coating

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.