Composite amorphous magnetically soft alloy having high initial permeability and high quality factor

Abstract

The invention discloses a composite amorphous magnetically soft alloy having high initial permeability and high quality factor. The alloy comprises components of Fe69.21Co7.69Cu0.6Nb2.5Si11B9-Ni71P29. A preparation method comprises the following steps: firstly, an amorphous magnetically soft alloy thin strip is prepared; then, chemical nickel-phosphorus plating liquid is prepared; and the composite amorphous magnetically soft alloy is prepared by a chemical deposition method. The composite amorphous magnetically soft alloy has the following advantages: the composite amorphous magnetically soft alloy prepared through the chemical deposition method is excellent in high-frequency performance; the relaxation frequency is high up to 3.8 MHz; the quality factor is 41 under the condition of 1 MHz; the initial permeability is kept at 6000 under the conditions of frequency of 1 kHz-1 MHz and magnetic field of 0.05 A / m, and is basically invariable; and the composite amorphous magnetically soft alloy is simple in process, convenient to operate, low in cost and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the field of magnetic functional soft magnetic materials and chemical deposition nickel-phosphorus technology. Specifically, it uses chemical deposition to prepare a composite amorphous soft magnetic material with high initial permeability and high quality factor. Alloys can be widely used in precision power transformers, high-power switching current transformers, reactors, filters, sensors and other ultra-high frequency fields. Background technique [0002] After the advent of amorphous soft magnetic materials, especially iron-based amorphous alloys, they have the characteristics of high resistivity, high permeability and low loss. In addition, compared with silicon steel, the process is simple and no special processing is required, so it is considered to be an ideal core material for power transformers. The research work on using amorphous alloy instead of thin silicon steel as the iron core of power transformers started alm...

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Problems solved by technology

However, today's iron-nickel alloys often ignore this part of the requirements while pursuing high magnetic permeability, and cannot take into account other parameters while improving the magnetic permeability, so that the material properties can reach a good balance.

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