By Coating Supplier - Magnets

By Coating

Neodymium Magnets (NdFeB) By Coating

Neodymium magnets are also known as Neodymium-Iron-Boron or Nd-Fe-B or NIB super magnets since they are composed of these elements. The chemical composition is Nd2Fe14B. These magnets are extremely strong for their small size and are metallic in appearance.
Attributes Of Neodymium Magnets
-There are several attributes of Neodymium magnets that differentiate them from other magnets.
-Neodymium magnets are very strong permanent magnets. In fact they are the strongest of all rare earth magnets and also the strongest permanent magnets that exist today.
-Neodymium magnets have a very high resistance to demagnetization. This makes them very useful in many different kinds of industrial applications.
-Even small sized Neodymium magnets have a very high energy. This makes them easily portable from one place to another.
-They are good in ambient temperature.
-Another major attribute of Neodymium magnets that has added to their popularity is the affordability factor. Neodymium magnets, unlike previous high strength magnets like tiny cobalt-samarium magnets, are priced very low and can be afforded by educators and experimenters on their limited budgets.
-Neodymium magnets are very corrosive and hence have to be handled carefully. It is best to coat them for long-term maximum energy output and usage.
-Neodymium magnets have a low working temperature for heat applications and can catch fire at high temperatures.

Neodymium Magnet Coatings:
Titanium (Ti)
Tin (Sn)
Silver (Ag)
Gold (Au)
Zinc (Zn)
Epoxy
Nickel (Ni)
Nickel-Copper-Nickel (Ni-Cu-Ni)
Titanium Nitride (TiN)
Parylene C
Everlube
Chrome
PTFE (also known as “Teflon”; white, black, gray, silvery)
Ni-Cu-Ni plus Epoxy
Ni-Cu-Ni plus Rubber
Zn plus Rubber
Ni-Cu-Ni plus Parylene C
Ni-Cu-Ni plus PTFE
Tin (Sn) plus Parylene C
Zinc Chromate
Phosphate Passivation

Sintered Neodymium Magnet By General Coating / Palting

Nickel-Copper-Nickel (Ni-Cu-Ni)

Most common coating on magnets
Actually 3 layers, nickel-copper-nickel
Protection of the magnet from corrosion in ambient air
Not a protective coating from humidity, water, or salt water
Light protection of the magnet from chipping
A decorative finish
Shiny metallic gray finish
Thickness: 12-25 microns
Cost: Low
Max working Temp: Approximately 200^o C
Gluing nickel coated magnets onto steel or plastic should be done with glue or epoxies specifically designed for magnets.
Main Industries: motors, medical devices (outside of body), sensors, automotive, holding, generators, pumps, thin film deposition. Used in almost all industries

Zinc (Zn)

Good adhesion when glued onto steel with a glue or epoxy specifically rated for magnets
Protection of the magnet from corrosion in ambient air
Slight protection from humidity, water, or salt water, but not consider a good choice if magnet is in moisture or fluids
Thickness of coating is thin, so less air gap between magnet and steel
Dull gray finish
Thickness: 4-8 micron
Cost: Low
Max working Temp: Approximately 120^o C
Main Industries: any application where low temp, low coating cost and little protective barrier is required.

Black Epoxy (EP)

Gray Epoxy (EP)

Epoxy coating is excellent as a barrier for salt air and salt water
Can scratch easily, must be handled carefully during assembly
Very good adhesion to steel with magnet rated glue
Mainly colored in black, however, can be colored in white
Thickness: 15-30 microns
Cost: Medium
Max working Temp: Approximately 200^o C
Gluing nickel coated magnets onto steel or plastic should be done with glue or epoxies specifically designed for magnets.
Main Industries: Marine, motor, sensors, consumer products, automotive

Color Zinc (Cr+Zn)

Good adhesion when glued onto steel with a glue or epoxy specifically rated for magnets
Protection of the magnet from corrosion in ambient air
Slight protection from humidity, water, or salt water, but not consider a good choice if magnet is in moisture or fluids
Thickness of coating is thin, so less air gap between magnet and steel
Dull gray finish
Thickness: 4-8 micron
Cost: Low
Max working Temp: Approximately 120^o C
Main Industries: any application where low temp, low coating cost and little protective barrier is required.

Gold (Au)

FDA approved medical coating for in-body use
Has an undercoating of Ni-Cu-Ni
Protection of the magnet from corrosion in ambient air
Slight protection from humidity, water, or salt water. The thickness of the gold is very thin, so performance in salt spray tests will ultimately show failure of the coating. Making the coating thicker will help, but gold is intended to be thin.
Gold finish
Thickness of gold layer: 0.3-0.6 micron
Cost: High
Max working Temp: Approximately 200^o C
Main Industries: medical (in and out of body applications), jewelry, decorative uses.

Copper (Cu)

Mostly used as a decorative coating
Protection of the magnet from corrosion in ambient air, but is less then nickel
Can rub off over time
Not a protective coating from humidity, water, or salt water
Copper finish
Thickness: 8-10 microns
Cost: Medium
Max working Temp: Approximately 200^o C
Main Industries: Decorative

Chrome (Cr)

Mostly used as a decorative coating
Protection of the magnet from corrosion in ambient air, but is less then nickel
Not a protective coating from humidity, water, or salt water
Chrome finish, dull metallic gray color
Thickness: 12-15 microns
Cost: Low – Medium
Max working Temp: Approximately 200^o C
Main Industries: Jewelry, decorative, cosmetic, consumer products

PTFE (Teflon)

Requires molds and tooling
Excellent protection to magnet against breakage, impact, and corrosion
Available on magnets that are medium to larger in size. Small magnets cannot be molded, but can be sprayed (see Spray PTFE – Teflon)
Provides a protective coating from humidity, fluids and AutoClave
Color of PTFE is white
Thickness: 0.5-1 mm
Cost: molds & tooling are required, and cost is dependent upon complexity of each. Cost / pc will decrease quickly with large quantities
Max working Temp: Approximately 250^o C
Gluing PTFE magnets onto steel or plastic has very poor adhesion. A mechanical hold is recommended
Main Industries: Predominantly medical and food industries.

Phosphate Passivation

Approved as a Food-grade coating
Requires tooling
Excellent protection to magnet against corrosion
Unlike molded PTFE, smaller magnets can be sprayed as well as larger magnets
Provides a protective coating from humidity and fluids
Can scratch, so proper handling is required
Color can be white or black
Thickness: 0.1 – 0.5 mm
Cost: Medium
Max working Temp: Approximately 200^o C
Gluing PTFE magnets onto steel or plastic has very poor adhesion. A mechanical hold is recommended
Main Industries: Predominantly medical and food industries.

Parylene

FDA approved medical coating for in-body use
Protection of the magnet from corrosion in ambient air
Slight protection from humidity, water, or salt water. Parylene will slowly fail in salt water, so an undercoating may be required.
Transparent finish
Thickness: 3-7 micron
Cost: Quantity Dependent. Done in batches, so the higher the quantity, the lower the cost / pc.
Max working Temp: Approximately 150^o C
Main Industries: medical (in body applications), and any product that needs a thin coating

Titanium (Ti-Tin)

FDA approved medical coating for in-body use
Hard coating that has a very strong bond to the magnet
Resilient to most chemicals and environmentally friendly
Protection from humidity and fluids
Finished color is a metallic gold with a smooth surface
Thickness of: 2-3 microns
Cost: Medium
Max working Temp: Approximately 500^o C
Main Industries: Medical

Silver (Ag)

Mostly used as a decorative coating
Protection of the magnet from corrosion in ambient air, but is less then nickel
Soft metal, so can scratch easily
Silver finish
Thickness: 12-15 microns
Cost: Low – Medium
Max working Temp: Approximately 200^o C
Main Industries: Jewelry, decorative, cosmetic, consumer products

Please Click to GET A QUOTE FOR the By Coating

Neodymium-Iron-Boron Segment Countersunk Motor Magnets

Neodymium-Iron-Boron Segment Countersunk Motor Magnets, Regular Sintered Neodymium Countersink Permanent Magnets for high performance motors, DC / AC Motor Accessories Industrial High corrosion resistant Neodymium Magnets made in China Exporter Neodymium-Iron-Boron Segment Countersunk Motor Magnets REFeB or NdFeB magnets have only been developed recently and consist of the rare earth neodymium, iron and boron. Energy […]

Neodymium Segment Countersunk Magnets for Motor

Neodymium Segment Countersunk Magnets for Motor, Regular Sintered Neodymium Permanent Magnets for high performance general motors, DC / AC Motor Accessories Industrial High corrosion resistant Neodymium Magnets made in China Exporter Neodymium Segment Countersunk Magnets for Motor – Neodymium-Iron-Boron-Magnets REFeB or NdFeB magnets have only been developed recently and consist of the rare earth neodymium, […]

Explosion Proof Motor AC Motor Sintered Magnet N42M

Explosion Proof Motor AC Motor Sintered Magnet N42M with Zinc Plating, Super Strong Regular Neodymium Magnets for high performance general motor, AC Motor Accessories Industrial segment permanent magnet made in China Exporter Explosion Proof Motor AC Motor Sintered Magnet N42M – Neodymium magnets can be divided into three main groups: 1.Regular Neodymium Magnets 2.High corrosion […]

Vector Drive Motor Neodymium Arc Permanent Magnet N45SH

Vector Drive Motor Neodymium Arc Permanent Magnet, Super Strong Neodymium Sector Magnets N45SH for high performance general motor, AC Motor Accessories Industrial segment permanent magnet made in China Supplier Vector Drive Motor Neodymium Arc Permanent Magnet N45SH – Neodymium magnets can be divided into three main groups: 1.Regular Neodymium Magnets 2.High corrosion resistant Neodymium Magnets […]

10 Poles Inner Bonded NdFeB Magnetic Ring for Fan Motor

10 Poles Inner Bonded NdFeB Magnetic Ring for Fan Motor, Ring Shape Radial Internal Magnetization Magnet, Black Epoxy Plated Multipole Ring Bonded Magnets, 10-Poles Radial Bonded Motor & Rotor Permanent Magents, bonding NdFeB rings China supplier 10 Poles Inner Bonded NdFeB Magnetic Ring for Fan Motor Features Magnet material: bonded ndfeb Surface coating: Black Epoxy […]

8 Poles Ring Shape Radial Internal Magnetization Magnet

8 Poles Ring Shape Radial Internal Magnetization Magnet, Black Epoxy Plated Multipole Ring Bonded Magnets, 8-Poles Radial Bonded Motor & Rotor Permanent Magents, bonded NdFeB magnetic ring China supplier 8 Poles Ring Shape Radial Internal Magnetization Magnet Features Magnetic material: Bonded NdFeB Magnetization mode: radial 8 pole Surface coating: Black Epoxy MPCO motor magnet factory […]

Washdown Duty Brake Motor Countersunk Long Arc Neo Magnets

Washdown Duty Brake Motor Countersunk Long Arc Neo Magnets, Super Strong Neodymium Sector Magnets N42SH for high performance general motor, Motor Accessories Industrial pumping segment permanent magnet made in China Supplier Washdown Duty Brake Motor Countersunk Long Arc Neo Magnets – Sintered Neodymium Iron Boron Magnets or “NdFeB” magnets, Motor Magnet NdFeB – Rare earth […]

Jet Pump Motor Nickel Coated Neodymium Countersunk Magnet

Jet Pump Motor Nickel Coated Neodymium Countersunk Magnet, Super Strong Neodymium Sector Magnets N50M for high performance general motor, Motor Accessories Industrial pumping segment permanent magnet made in China Supplier Jet Pump Motor Nickel Coated Neodymium Countersunk Magnet N50M – Sintered Neodymium Iron Boron Magnets or “NdFeB” magnets, Motor Magnet NdFeB – Rare earth magnet […]

Washdown Duty Motor Magnet Neo Arc N54

Washdown Duty Motor Magnet Neo Arc N54, Super Strong Nickel Coated Neodymium Sector Magnets for high performance general purpose motor, Industries Motors segment permanent magnet made in China Supplier Washdown Duty Motor Magnet Neo Arc N54 – Sintered Neodymium Iron Boron Magnets or “NdFeB” magnets offer the highest energy product of any material today and […]

Wholesale Custom Motor Grades NdFeB Generator Neodymium Magnet

Wholesale Custom Motor Grades NdFeB Generator Neodymium Magnet, Super Strong Nickel Coated Neodymium Sector Arc Magnets for general purpose motor, Industries Motors permanent magnet made in China Supplier Wholesale Custom Motor Grades NdFeB Generator Neodymium Magnet N54 – Sintered Neodymium Iron Boron Magnets or “NdFeB” magnets offer the highest energy product of any material today […]

Arc Motor Sintered NdFeB N48H Magnet

Arc Motor Sintered NdFeB N48H Magnet, Super Strong Nickel Coated Neodymium Sector Arc Magnets for general purpose motor, Industries High Duty Motors permanent magnet made in China Arc Motor Sintered NdFeB N48H Magnet – Sintered Neodymium Iron Boron Magnets or “NdFeB” magnets offer the highest energy product of any material today and are available in […]

Quarry Duty Motor Magnet NdFeB Arc N50H Zinc Plating

Quarry Duty Motor Magnet NdFeB Arc-shaped N50H

General Quarry Duty Motor Magnet NdFeB Arc-shaped N50H Zinc Plating, Super Strong Neodymium Sector Arc Magnets for general purpose motor, Industries AC Quarry Duty Motors permanent magnet made in China, Anisotropic Sintered Nd2Fe14B Magnets Quarry Duty Motor Magnet NdFeB Arc-shaped N50H features: Material: Sintered NdFeb Grade & Working Temperature: […]

General Severe Duty Motor Magnet Nd N48H

General Severe Duty Motor Magnet Nd N48H, Strong Neodymium Sector Arc Magnets for general purpose three phase motor, NdFeB type Segment Strong Magnet, Industries AC Motors permanent magnet made in China General Severe Duty Motor Magnet Nd N48H features: Material: Sintered NdFeb Grade & Working Temperature: […]

Neodymium Arc Auger Drive Motor Magnet

Neodymium Arc Auger Drive Motor Magnet, Strong Neodymium Sector Magnets N42H/ N45H/ N48H/ N50H, L type Segment Strong Magnet, Agricultural Industries drive motor permanent magnet Neodymium Arc Auger Drive Motor Magnet features: Model Number: N35-N52,M,H,SH,UH,AH, EH Type:Permanent Composite:NdFeB Magnet Shape:Sector magnet Size: custom design Application:Moto Magnet, Car wheel hub motor magnet Material:Strong neodimium magnet strong […]

Multipole Magnetized Epoxy Coated Flat Block Ferrite Cow Magnet

Multipole Magnetized Epoxy Coated Flat Block Ferrite Cow Magnet, Rectangular Ceramic Cow Magnet, Ceramic 5 (Strontium Ferrite) Block Ferrite Cow Stomach Magnet, prevent Hardware Disease Rumax Ceramic C5 Rectangle Magnets, Black nylon coated block ferrite rumen magnet Multipole Magnetized Epoxy Coated Flat Block Ferrite Cow Magnet Specifications: Part No.: MPCO-COW-07 Material: Strontium Ferrite / Ceramic […]

Rectangular Ceramic Cow Magnet

Rectangular Ceramic Cow Magnet, Ceramic 5 (Strontium Ferrite) 4-poled epoxy coated flat cow magnet, FDA-approved Block Ferrite Cow Stomach Magnet, reticulum rumen magnet prevent Hardware Disease, Rumax Ceramic C5 Rectangle Magnets, Black nylon coated block ferrite magnet with multi-pole magnetized Ceramic Cow Magnet Specifications: Part No.: MPCO-COW-06 Material: Strontium Ferrite / Ceramic 5 Shape: Rectangular […]

NdFeB Horizontal Wind Generator Magnet

NdFeB Horizontal Wind Generator Magnet, Hydroelectric Generator N50H block Nd magnets, Permanent Magnet Generator AC Alternator, NdFeB block for Coreless permanent magnet generator three phase China Supplier NdFeB Horizontal Wind Generator Magnet Technical Specifications: Grade: N50H Material: Neodymium (NdFeB) Plating: Nickel (Ni-Cu-Ni) / Double Ni Shape: Block / Wedge Dimension: Customized size by custom design […]

Hydroelectric Generator Neodymium Magnet

Hydroelectric Generator Neodymium Magnet, N42UH block Nd magnets for vertical axis wind turbine; gasoline generator motor alternator Neodymium Magnet, Wedge Strong Magnets China Supplier Hydroelectric Generator Neodymium Magnet Technical Specifications: Grade: N42UH Material: Neodymium (NdFeB) Plating: Nickel (Ni-Cu-Ni) / Double Ni Shape: Block / Wedge Dimension: Customized size by custom design drawing Tolerance: ±0.05 mm […]

Disc Coreless PMG Generator Magnet

Disc Coreless PMG Generator Neodymium Motor Magnet, Neodymium Wedge Magnets, Rectangle Shaped Magnet for disc coupling permanent magnet generator, wind alternator inner rotor generator, three-phase permanent magnet alternator Disc Coreless PMG Generator Magnet Technical Specifications: Grade: N50M Material: Neodymium (NdFeB) Plating: Nickel (Ni-Cu-Ni) / Double Ni Shape: Block / Wedge Dimension: Customized size by custom […]

Disc Coreless Generator Permanent Magnet Neodymium

Disc Coreless Generator Permanent Magnet Neodymium, Disc Coreless PMG Neodymium Wedge Magnets, super strong block magnet for axial flux permanent magnet generator, Vertical axis wind turbine magnets Disc Coreless Generator Permanent Magnet Neodymium Technical Specifications: Grade: N38H Material: Neodymium (NdFeB) Plating: Nickel (Ni-Cu-Ni) / Double Ni Shape: Block / Wedge Dimension: Customized size by custom […]

Neodymium Coreless Gear Motor Magnet

Strong Neodymium Permanent Coreless Gear Motor Magnet, Cylindrical Ring Permanent NdFeB coreless construction Magnets, Encoder Rotor Magnets for Brushed DC Motor / Brushless DC Motor / Servo Motor / Gear Motor / Stepper Motor Strong Neodymium Permanent Coreless Gear Motor Magnet NdFeB Tube are utilize diametrically-magnetized high performance Neodymium tube magnet or cylidrical ring magnets […]

Coreless Servo Motor Magnet NdFeB Tube

Coreless Servo Motor Magnet NdFeB Tube, Neodymium Cylindrical Ring Permanent Magnets, coreless motor permanent magnet, Encoder Rotor Magnets for Brushed DC Motor / Brushless DC Motor / Servo Motor / Coreless Gear Motor Stepper Motor The most of Coreless Servo Motor Magnet NdFeB Tube are utilize diametrically-magnetized high performance Neodymium ring magnet or tube cylidrical magnets […]

Neodymium Cylindrical Ring Coreless Motor Magnets

Neodymium Cylindrical Ring Coreless Motor Magnets, coreless brushless or brush motor permanent magnet, Rotor Magnets for Brushed DC Motor / Brushless DC Motor / Coreless Servo Motor / Coreless Gear Motor Stepper Motor The most of coreless motor magnets are utilize diametrically-magnetized high performance Neodymium ring magnet or tube cylidrical magnets grade N52, N54, N50M, […]

3mm x 1mm Tiny Disc Magnet Neo N35 Nickel

3mm x 1mm Tiny Disc Magnet Neo N35 Nickel, Powerful Strong Rare Earth NdFeB Disc Magnet, Ni-Cu-Ni Plated Disk Neodymium Permanent Magnets China Factory 3mm x 1mm Tiny Disc Magnet Neo N35 Nickel Technical Specifications: Item: NDN35-0301 Grade: N35 Material: Neodymium (NdFeB) Plating: Nickel (Ni-Cu-Ni) / Double Ni Shape: Disc, Disk, Round Dimension: Total Diameter […]

3mm x 2mm Tiny Disk NdFeB Magnet N35 Nickel

3mm x 2mm Tiny Disk NdFeB Magnet N35 Nickel, Powerful Strong Rare Earth Sintered NdFeB Disc Magnet, Ni-Cu-Ni Plated Disk Neodymium Permanent Magnets China Factory 3mm x 2mm Tiny Disk NdFeB Magnet N35 Nickel Technical Specifications: Item: NDN35-0302 Grade: N35 Material: Neodymium (NdFeB) Plating: Nickel (Ni-Cu-Ni) / Double Ni Shape: Disc, Disk, Round Dimension: Total […]

3mm x 1.5mm Tiny Disc Neodymium Magnet N45 Nickel

3mm x 1.5mm Tiny Disc Neodymium Magnet N45 Nickel, Powerful Strong Rare Earth Sintered NdFeB Disc Magnet, Ni-Cu-Ni Plated Disk Neodymium Permanent Magnets China Factory 3mm x 1.5mm Tiny Disc Neodymium Magnet N45 Nickel Technical Specifications: Item: NDN45-0301.5 Grade: N45 Material: Neodymium (NdFeB) Plating: Nickel (Ni-Cu-Ni) / Double Ni Shape: Disc, Disk, Round Dimension: Total […]

3mm x 2mm Small Disc NdFeB Magnet N45 Epoxy

3mm x 2mm Small Disc NdFeB Magnet N45 Epoxy, Powerful Super Strong Rare Earth Sintered NdFeB Disc Magnet, Black Epoxy Plated Disk Neodymium Permanent Magnets China Factory 3mm x 2mm Small Disc NdFeB Magnet N45 Epoxy Technical Specifications: Item: NDN45-0302 Grade: N45 Material: Neodymium (NdFeB) Plating: Epoxy Shape: Disc, Disk, Round Dimension: Total Diameter (D): […]

Rare Earth Neodymium Grain Boundary Diffusion Magnets

Rare Earth Neodymium Grain Boundary Diffusion Magnets, Heavy Rare Earth Elements (HREE) GBD Process NdFeB Magnets, Grain Boundary Diffusion (GBD) Process NdFeB permanent magnets, high-end neodymium magnets China factory Rare Earth Neodymium Grain Boundary Diffusion Magnets is an important new advance in Neodymium magnet production technology. Heavy Rare Earth Elements (HREE) are delivered directly to […]

12 3 Next