| |
|
|
Powerful
Extreme
resistance to demagnetization
Complex
shapes possible
Brittle
|
|
Bonded Neodymium magnets are composed of
Neodymium, Iron, Boron and binder. Bonded Neodymium magnets are
manufactured by compression molding or injection molding. Compression bonded
Neodymium magnets have higher energy products and simpler shapes than injection
bonded Neodymium magnets. There are both isotropic and anisotropic bonded
Neodymium magnets.
Magnetic property of Boded Neodymium
magnets:
High Energy Products. Very high resistance to demagnetization. Low
operating temperature (under 80 to 150°C). For details, see the table of
Bonded Neodymium Magnetic property.
Oxidation
to Bonded Neodymium magnets:
Easy to be oxidized at its surface in wet air. Normally, they are plated
with lacquer or Nickel.
Physical
property of Bonded Neodymium magnets:
Dark gray in color. Hard
and brittle. Density of Neo is .22Lb/in3 (6.1g/cm3).
Tolerance
of Bonded Neodymium magnets:
Unless otherwise specified, tolerance on dimension of magnetization is ±.005”. Other dimensions are ±1.5% or ±.010”, whichever is greater.
Handling
Bonded Neodymium magnets:
Must be careful to avoid personal injury and material damage due to its
extremely magnetic strength and brittle property.
|
BONDED
NEODYMIUM MAGNETIC PROPERTY:
|
Grade
|
Br
(Gauss)
|
Hc
(Oe)
|
Hci
(Oe)
|
(BH)max
(MGO)
|
Max
Working Temp. (
°C
/
°F)
|
|
BN-8
|
6,000
– 6,500
|
4,500
– 5,500
|
8,000
– 12,000
|
7
- 9
|
140
/ 275
|
|
BN-10
|
6,500
– 7,000
|
4,500
– 5,800
|
8,000
– 12,000
|
9
-10
|
110
/ 220
|
|
BN-12
|
7,000
– 7,600
|
5,300
– 6,000
|
8,000
– 11,000
|
10
- 12
|
130
/ 260
|
|
BN-8H
|
5,500
– 6,200
|
5,000
– 6,000
|
12,000
– 16,000
|
6
- 9
|
125
/ 250
|
|
|
