OJSC MSTATOR produces ribbons of AMAG amorphous and nanocrystalline alloy 15 to 30 (specified by the customer) micrometers thickand 20, 25, 30 and 50 mm wide originally after spinning. Using cutting equipment available, OJSC MSTATOR supplies 1 to 50mm wide ribbon according to the customer's requirements. 

 

See Amorphous and nanocrystalline soft magnetic alloys for more information on ribbon preparation, structure, properties, advantages, and comparison with conventional soft magnetic materials.

At present, amorphous and nanocrystalline soft magnetic materials are used in various applications:

  • In telecommunication systems. ISDN, DSL and PLC transformers and chokes.
  • In electrical industry, replacing conventional silicone steel by amorphous alloys provides energy savings on eddy currents.
  • In residual current devices (RCD), designed to protect people from electric shock, including those usedin household electrical equipment. High permeability provides good sensitivity, low threshold and good accuracy.
  • In solar generators.
  • In highly effective electromagnetic shielding. Low-temperature annealing allows high permeability while maintaining high plasticity of ribbon. Used for shielding special facilities with sensitive equipment, sensitive equipment nodesshielding, cable shielding (cables wrapped in ribbon), etc.
  • In electric measuring devices : current transformers, watt-hour counters. Using nanocrystalline materials in current transformers increases the accuracy of measurments, eliminates the dependence on the shape and symmetry of the load current, ensures accuracy class 0.2.
  • In EMC / EMI filters for switched power supplies (SMPS) and inverter drives. Have higher rejection ratio over a wide frequency range.
  • In pulse power supplies, inverters, AC/DC and DC/DC converters. Due to the new materials high reliability, high efficiency, small size and weight, and low noise level are provided.
  • In magnetic amplifier chokes. Small size, low control current, low loss.
  • In high frequencypower transformers and chokes. Low losses and high operating temperatures provide reduction of size.
  • In power factor correction chokes. Low loss and small size.
  • In modern power supplies for electric welding. Small mass of units, a wide temperature range, the ability to work with stable direct current. Easy regimeregulation and universality.
  • In battery chargers. Small size, auto shut off, optimum program work, multi-chargers.
  • In industrial ballasts. Reliability, low weight, tough operating conditions.
  • In audio and video equipment for manufacturing magnetic heads of high-frequency high-density recording.
  • In tube amplifiers of Hi-Endaudio equipment for manufacturing audio output transformers.
  • High radiation and corrosion resistance allows amorphous materials to be used as amorphous copper based solders for connecting nodes of nuclear and fusion reactors in the nuclear industry.
  • In electromagnetic and acousto-magnetic sensors for anti-theft devices.
  • High resistivity allows amorphous materials to be used as resistive elements in the effective low-temperature (infrared) band heaters with surface utilization factor up to 95%. Used in cars (heated seats, heated fuel lines, batteries), construction (heated floors, ceilings, new heating system), agriculture (local heating facilities in animal husbandry, bee hives heating, greenhouses, incubators, etc.).
  • In short voltage / currentbursts absorbers (interference suppressing magnetic cores). Fit over the components outputs. Eliminate the cause of interference by changing the nature of the switch.
  • In automotive applications: in power supplies, flexible magnetic antennae, EMI chokes, etc.

Properties of Co-based amorphous ribbons

(after corresponding thermomagnetic treatment)

Alloy properties AMAG
187
AMAG
186
AMAG
185
AMAG
183
AMAG
180
AMAG
179
AMAG
172
AMAG
171
AMAG
170
Saturation induction B10, T 1.0 0.9 0.85 0.75 0.68 0.66 0.60 0.58 0.55
Coercitive force Hc, A/m 4.0 2.0 1.6 1.2 0.24 0.24 0.24 0.24 0.16
Relative permeability µ @ 10 kHz 1400 2200 3300 10000 35000 50000 70000 80000 120000
Max. permeability, µ max ´ 103 - - - 500 - 800 1000 1000 1200

Ore specific loss, W/kg @ 0.2T:

10 kHz

100 kHz

1.5÷2.0
50÷60
1.5÷2.0
45÷55
1.5÷2.0
35÷45
1.5÷2.0
30÷40
1.0÷1.5
20÷30
1.0÷1.5
20÷30
1.0÷1.5
20÷25
0.5÷1.0
20÷25
0.5÷1.0
20÷25
Crystallization temperature Tcr, °C 450 470 485 515 505 510 520 525 530
Curie temperature, Tc, °C ≥ Tcr. 430 380 350 275 265 235 225 200
Density γ, g/cm3 7.9 7.85 7.8 7.7 7.8 7.8 7.7 7.7 7.7
Squareness ratio, no more than* 0.02 0.03 0.03 0.05 0.05 0.05 0.10 0.15 0.20
Squareness ratio, at least** 0.95 0.95 0.95 0.9 0.9 0.9 0.9 0.9 0.9
Saturation magnetostriction λs, ×10-6 0.05 0.05 0.05 1.0 0.1 0.2 -0.1 -0.1 0.1
Russian and foreign compatible alloys (VAC – Vacuumschmelze, MG-Metglass) VAC 6150
VAC 6125
86КГСР
VAC 6150 VAC 6030 VAC 6030
MG2705M
84КСР
82КГМСР
- - VAC 6070
84 КХСР
71 КНСР
VAC 6010
VAC 6025
MG 2714
82 К3ХСР

*thermal treatment in transverse magnetic field

**thermal treatment in longitudinal magnetic field

 

Properties of Ni-Fe-based amorphous ribbons

(after thermal treatment in longitudinal magnetic field)

Alloy properties AMAG 203 AMAG 223 AMAG 225 AMAG 245 AMAG 254
Saturation induction B10, T 1.4 1.32 1.10 0.83 0.83
Squareness ratio, no more than 0.1 0.03 0.05 0.10 0.05
Coercitive force Hc, A/m 4.0 5.0 3.2 1.5 8.0
Permeability µ @ 10 kHz 5000 1800 6000 8000 1500
Crystallization temperature Tcr, °C 520 425 485 480 400
Curie temperature Tc, °C 380 ≥Tcr 390 290 ≥Tcr
Density γ, g/cm3 7.3 7.4 7.4 7.5 7.9
Russian and foreign compatible alloys (VAC – Vacuumschmelze, MG-Metglass) VAC 7505
2НСР
MG2605S3A
- 15ХНСР VAC 4040
MG 2826 MB
-

NOTES:

AMAG 225 alloy is used in low-temperature (infrared) electric heaters. It’s specific electrical resistivity ρ = 1.3 µOhm×m. Nominal resistance for 1m long 10mm wide ribbon is 8.5± 1.0 Ohm.

AMAG 254 alloy is used in anti-theft tags (sensors) of acousto-magnetic EASs.

Properties of Fe- and Fe-Co-based amorphous ribbons

(after thermal treatment in transverse magnetic field)

Alloy properties AMAG 321 AMAG 324 AMAG 492
Saturation induction B10, T 1.80 1.55 1.56
Squareness ratio, no more than 0.25 0.03 0.20
Coercitive force Hc, A/m 30.0 4.0 8.0
Permeability µ @ 10 kHz 300 1700 5000
Crystallization temperature Tcr, °C 400 520 500
Curie temperature Tc, °C ≥Tcr ≥Tcr 380
Density γ, g/cm3 7.6 7.6 7.3
Russian and foreign compatible alloys (VAC – Vacuumschmelze, MG-Metglass) MG 2605 CO
VAC 7600
24 КСР
30 КСР
MG 2605 SA1
УСР

 

Properties of nanocrystalline ribbons

(after corresponding thermomagnetic treatment)


Alloy properties
AMAG -200 AMAG -200С AMAG-201 AMAG-204 AMAG -211
Saturation induction B10, T 1.20 1.16 1.2 1.2 1.25
Coercitive force Hc, A/m 0.8 0.8 1.5 2.0 3.2
Permeability µ @ 10 kHz 30 000÷80 000 50 000÷100 000 20 000÷30 000 10 000÷15 000 3000÷8000
Crystallization temperature Tcr, °C 515 515 515 515 -
Curie temperature Tc, °C 570 560 - - -
Density γ, g/cm3 7.3 7.3 7.3 7.4 7.6
Squareness ratio, no more than* 0.1 0.1 0.1 0.05 -
Squareness ratio, at least** 0.9 0.9     -

Core specific loss, W/kg @ 0.2T:

10 kHz

100 kHz

1÷1.5
30÷40
1÷1.5
30÷40
-
-
-
-
Saturation magnetostriction λs, ×10-6 2 0,5 3 4.5 -
Russian and foreign compatible alloys (VAC – Vacuumschmelze, MG-Metglass) Finemet
5BDCP
Vitroperm 500F
Vitroperm 800
Nanoperm
- - Vitroperm 250F

* thermal treatment in transverse magnetic field

** thermal treatment in longitudinal magnetic field