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20/09/2019, Fri

Ferrite exchange spring magnet

 

Institute/Department name

 

Materials engineering department

 

Product Type

 

Goods

 

Product Name

 

 Ferrite exchange spring magnet

 

Product Description

 

An Exchange Spring Magnet is a magnetic material with high coercivity and high saturation properties derived from the exchange interaction between a hard magnetic material and a soft magnetic material, respectively. Exchange spring magnets are cheaper than many magnets containing rare earth/transition metals. The exchange spring magnet offers an improvement in the maximum energy products of material, as compare to pure ferrites. On the other hand, the ferrite exchange spring magnets have the common features of ferrites such as chemical stability and corrosion resistance, high electrical resistivity, low price and low eddy current losses. 

 

Product Application

  • Small electric motors
  • Micro-wave devices
  • Recording media
  • Magneto-optic media
  • Telecommunication
  • Electronic industry

Product Specifications

 

Magnetic properties

Residual Induction Br

kG (mT)

4 (400)

Coercive Force Hc

kOe (KA/m)

3.5  (280)

 

Energy Product (BH)max

MGO (KJ/m3)

3.7  (29.5)

 

Curie Temperature

°C

450

 

 

Physical properties

Density (g/cm3)

4.9

Modulus of elasticity (GPa)

180

Ultimate tensile strength (MPa)

34

Coefficient of thermal expansion (10-6 /°C)

Perpendicular to orientation

Parallel to orientation

 

 

10

14

Electrical resistivity

(Ω-cm) at 20 °C

106

 

 

 

Product functional specifications

 

It’s customizable up to customer order

Approved and adopted standards

 

Approved by the Metal Materials Domestic industry and the industries of Shahid Hadi

Similar foreign products

 

There is no similar commercial grade

Product pictures:


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