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Amorphous and Nano-alloy

  • September 02. 2022

These ribbons are intended for applications in core of r.f. pulse transformer, in chokes, magnetic heads, magnetic screens and other electromagnetic devices instead of electrical steels, permalloys and ferrites, as transducers for antitheft devices and heating elements.


The manufacturing technology for measuring ribbons is developed by using of melt quenching(“spinning”). These ribbons have the following dimensions:

The range of nominal thickness 18~25μm with tolerance±(2~3)μm per one roll;

The range of the nominal width from 0.7 to 25.0mm (not more than 25.0mm), with tolerance(0.1~.2)mm.

The use of developed materials in products allows to improve their technical parameters, mass and dimension characteristics, also technical and economic indices during the fabrication of these products. The mst profitable field of application: magnetic cores and transformers S2m, S0, Up0 for ISDN system.


The major properites of Co-based and nano alloys AMAG after suitable thermomagnetic treatment.

Alloy Properties

AMAG

AMAG

AMAG

AMAG

AMAG

AMAG

AMAG

AMAG

200(Nano)

186

183

180

179

172

171

170

Induction B10, T

1.2

0.90

0.75

0.68

0.66

0.60

0.58

0.55

Coercive force Hc, Oe

0.015

0.025

0.015

0.003

0.003

0.003

0.003

0.002

Permeability μ, at 10KHz

≥30000

2200

10000

35000

50000

70000

80000

100000

Permeability μ, at 1MHz

≥2500

1800

2000

3000

3000

3000

3200

3500

Max. permeability,μmax, at 103

600

1000

500

1000

800

1000

1000

1000

Specific losses P0.2, W/Kg at 10KHz

1-1.5

1.5-2

1.5-2

1-1.5

1-1.5

0.5-1

0.5-1

0.5-1

Specific losses P0.2,W/Kg at 100KHz

30-40

45-55

30-40

20-30

20-30

20-25

20-25

20-25

Crystallization temperature, ℃

530

470

525

505

510

520

525

530

Curie temperature, ℃

570

430

350

275

265

235

225

200

Density, g/cm3

7.3

7.7

7.7

7.7

7.7

7.7

7.7

7.7

Linear hysteresis loop squareness ratio, not more than

0.1

0.03

0.05

0.05

0.05

0.1

0.15

0.2

Square hysteresis loop squareness ratio, not more than

0.9

0.9

0.9

0.9

0.9

0.9

0.9

0.9

Saturation magnettostriction, 10-7

+20

+0.5

+10

+1

+2

-1

-1

+1


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