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Fe-Based Nanocrystalline Ribbon

Fe-Based Nanocrystalline Ribbon

Application Fields: • Transformer cores for high frequency switch mode power supplies • Current transformer cores for electric industry • Transformer cores for ground-fault-interrupters • Cores for filters, storage inductors, and reactors • EMC common mode chokes • Sensor cores • Cores for...

Products Specifications:

Application Fields:
• Transformer cores for high frequency switch mode power supplies
• Current transformer cores for electric industry
• Transformer cores for ground-fault-interrupters
• Cores for filters, storage inductors, and reactors
• EMC common mode chokes
• Sensor cores
• Cores for saturable reactors, magnetic amplifiers, beads, and pulse compressors


Characteristics:
• High saturate induction—minimize transformer volume
• High permeability and low coercivity—promote efficiency of transformers and reduce distributional capacitance
• Low core loss—minimize temperature rise of transformers
• Excellent stability—with the highest serving temperature of 130℃for long time
• Relatively low cost compared to permalloys


Properties:
Physical properties:

Saturate induction

1.25 T

Saturate magnetostriction

2´10-6

Curie temperature

560 °C

Density

7.2 g/cm3

Crystallization temperature

510 °C

Resistivity

130μΩ-cm

Hardness Hv

880kg/mm2




Magnetic properties:

Product type

Transverse field annealed

No field annealed

Longitudinal field annealed

Initial permeability

>3×104

>8×104

>1×104

Maximum permeability

>5×104

>45×104

>50×104

Remanace

<0.2 T

0.6 T

>0.85 T

Coercivity

<1.8A/m

<0.8A/m

<1.8A/m

Core loss (20kHz, 0.5T)

<50W/kg

<25 W/kg

<90W/kg

Core loss (100kHz, 0.3T)

<150W/kg

<150 W/kg

<300W/kg

Variation of core loss (-55 °C—125 °C)

<15%

<15%

<15%


Comparison of nanocrystalline alloy with other materials:

Material

Nanocrystalline

Permalloy

Ferrite

Saturate induction (T)

1.25

0.75

0.5

Magnetostriction (×10-6)

<2

<2

4

Resistivity (μΩ-cm)

80

56

106

Curie temperature (°C)

570

400

<200

Remanace (T)

0.20-1.0

0.20

Initial permeability (Gs/Oe)

>80,000

>80,000

Maximum permeability (Gs/Oe)

>200,000

600,000

<20,000

Coercivity Hc (A/m)

<2

<1

6

Core loss (20KHz,0.5T) (W/Kg)

<35

-

Core loss (50KHz,0.3T) (W/Kg)

<60

-


Specifications:

Part No.

Width, mm

Thicknes, μΩ

Processing status

RN1-0080

8±0.2

30±5

Cast ribbon

RN1-0100

10±0.5

30±5

Cast ribbon

RN1-0150

15±0.5

30±5

Cast ribbon

RN1-0180

18±0.5

30±5

Cast ribbon

RN1-0200

20±0.5

30±5

Cast ribbon

RN1-0250

25±1

30±5

Cast ribbon

RN1-0300

30±1

30±5

Cast ribbon

RN1-0350

35±1

30±5

Cast ribbon

RN1-0400

40±1

30±5

Cast ribbon

RN1-0080

8±0.2

26±2

Slit ribbon

RN1-0100

10±0.5

26±2

Slit ribbon

RN1-0150

15±0.5

26±2

Slit ribbon

RN1-0200

20±0.5

26±2

Slit ribbon

Ribbons with other specifications can be provided according to customer's demand.


Typical characteristic curves:

image001.jpg

Fig.1 Hysteresis loops
Fig.2 Core loss after no-field-annealing

image002_副本.png

Fig.3 Core loss after transverse-field-annealing (left) and longitudinal-field-annealing (right)


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