铁氧体的物理特性

铁氧体(陶瓷)磁铁的各等级的物理特性相差不多,以下是具体数据,请参考:

铁氧体磁铁/陶瓷体物理性能概况

Characteristic

Symbol

Unit

Value

Density

D

g/cc

4.9 – 5.1

Vickers Hardness

Hv

D.P.N

400 - 700

Compression Strength

C.S

N/mm2

680 - 720

Coefficient of Thermal Expansion

C//

10-6/°C

15

 

C^

10-6/°C

10

Electrical Resistance

R

micro Ω.cm

1 x 1010

Thermal Conductivity

k

w/cm°C

0.029

Tensile Strength

σUTS, or SU

Pa

34 x 106

Modulus of Elasticity

 

Pa

1.8 x 1011

Flexural Strength

σ

Pa

62 x 106

Compression Strength

C.S.

Pa

895 x 106

Hardness

 

Mohs

7

Poisson's Ratio

v

 

0.28

Curie Temperature

Tc

°C

450

铁氧体磁铁的温度特性

MAGNET

Rev.Temp.Coef. of Induction
(Br),
a, %/°C (20-100°C)

Rev.Temp.Coef. of Coercivity
(Hci),
b, %/°C (20-100°C)

Max. Working Temperature

(based on High working point)

Ferrite

-0.2

+0.27

300 ºC = 572 ºF