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Iron-based Nanocrystalline Alloy ribbons
Composition (at%): 0-1.0 Co, 0.5-1.5 Cu, 2-4 Nb, 20-25 Si+B, bal. Fe
Ribbon Thickness: 14 - 30 μm
Ribbon Width: 2 - 80 mm
Permeability: 400 - 900,000 variable
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Applications:
Fe-based Nanocrystalline Ribbons can be used to replace silicon steel, Permalloy, and ferriteas excellent materials to maketransformer cores for high-frequency switch mode power supplies, current transformer cores, 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, magentic shileding sheets, wireless power transmission, and pulse compressors.
Characteristics:
--High saturation induction—minimizing the volume of transformers
--High permeability and low coercivity—increasing the efficiency of transformers and reducing distributional capacitance
--Low core loss—minimizing the temperature rise of transformers
--Excellent thermal stability of permeability betwwen -40 and 140 oC
Physical Properties:
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Saturation induction BS
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1.25 T
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Vickers hardness HV
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880 kg/mm2 |
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Curie temperature TC
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560 oC
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Density d
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7.2 g/cm3
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Crystallization temperature TX
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510 oC
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Resistivity ρ
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130 µΩ·cm
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Saturation magnetostriction coefficient λS
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2×10-6
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Recommended Thickness of Nanocrystalline Ribbons:
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Thickness*
(mm)
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Packing Factor (%)
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High Frequency Power Transformer
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Common Mode Choke
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Current Transformer
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Power Loss**
[W/kg]
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m(0.08)***
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Rec.
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Power Loss****
[W/kg]
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m
(10 kHz)
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m
(100 kHz)
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Rec.
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mi
(50 Hz)
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mm
(50 Hz)
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Rec.
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23-26
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78-84
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£ 20
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30,000-60,000
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X
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--
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--
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--
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--
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85,000
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50,000
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X
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20-23
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78-84
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£ 15
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30,000-60,000
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X
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£ 80
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80,000
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15,000
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X
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85,000
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50,000
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X
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17-20
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75-82
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£ 12
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30,000-60,000
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X
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£ 70
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75,000
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25,000
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X
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--
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--
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--
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14-17
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75-82
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--
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--
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--
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£ 60
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70,000
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30,000
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X
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--
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--
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* Recommended thickness for Wireless Power Transmission (Magnetic Shielding Sheets) and Magnetic Amplifier: 23-26 and 20-23 mm.
** Power loss measured at 20 kHz, 0.5 Tesla.
*** m(0.08): permeability measured at 0.08 T.
****Power loss measured at 100 kHz, 0.3 Tesla.
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