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Sintered Neodymium Magnet

 Introduction to Sintered NdFeB Magnet

NdFeB magnet, i.e neodymium Iron Boron magnets is the most widely used rare earth magnet.

Because NdFeB magnet , also called “ neo ” or “neodymium “ is the strongest permanent magnet, and the operation temperature can be 150 -180 ℃ which can perform its best magnetic performance; In terms of Theory , NdFeB magnet working temperature can reach 200 ℃, in fact, it depend on the size, shape, working environment and magnetic circuit.  If need higher operation temperature , then considering Samarium Cobalt Magnet

 

Secondly, neodymium magnets include variety of grades, is able to meet kinds of requirement of magnetic output performance and temperature ratings. So NdFeB magnet is very popular in kinds of application. The Grade is related with magnetic output and reversible temperature coefficients, so choosing grade is very important.

 

Neo magnet is composed of rare earth neodymium, metal praseodymium, iron, aluminum, boron-iron alloy, and other rare earth materials. The iron component make the neodymium magnet is easy to be rusty, so need make plating, usually, Nickel-copper-Nickel (NiCuNi) three layers protective coating. Also can make Zinc, Au (gold), Ag (silver), chromium (Chrome), epoxy (grey or black epoxy) plating.

 

Neodymium Magnet Application
Magnet for Motors &Generators
Magnet for Sensor
Magnet for Actuator
Magnet for Louder speaker
Magnet for Water treatment softener and conditioner
Magnet for Separators
Magnet for Electric industry

 

EUKE is able to produce kinds of shape magnets:

Disc Shape NdFeB Magnet , Ring shape magnet, Arc shape magnet ,contersunk shape magnet and irregular shape magnet.

 

            

 

Typical Physical Properties

Parameter

Unit

Standard Data

Curie Temperature

310-380

Maximum Operating Temperature

80-200

Hardness

Hv

620

Electrical Resistivity

W.cm

1.8x10-4-2.0x10-4

Density

g/cm3

7.50-7.65

Recoil Permeability

 

1.05

Magnetization Field Strength

Koe

≥30

Magnetization Field Strength

KA/m

≥2400

Bending Strength

Mpa

295-345

Temp. Coefficient of Br

%/℃

-0.11~-0.12

Temp. Coefficient of Hcj

%/℃

-0.5~-0.7

 

Magnetic Properties of Sintered NdFeB Magnet

The following Grades are available