A nanocrystalline magnetic core with linear magnetic permeability and its preparation method
A nanocrystalline, magnetic permeability technology, applied in the direction of transformer/inductor core, inductor/transformer/magnet manufacturing, magnetic objects, etc. Effect of core loss, strong anti-saturation performance
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Embodiment 1-3
[0060] The magnetic cores in Examples 1-3 conform to the above-mentioned alloy ratio and are prepared by the following preparation method. The preparation method specifically includes the following steps:
[0061] (1) carry out the spraying system of alloy melt to the alloy of described component by quenching single roll method, form crystalline state alloy strip material;
[0062] (2) according to the requirement, the strip is cut with a fixed width roller, and then wound to make a ring magnetic core of a certain size;
[0063] (3) Place the iron core in a nitrogen protection furnace, and at the same time apply a magnetic field strength greater than 5Am along the axial direction of the annular iron core -1 The transverse magnetic field is used to raise the temperature to the crystallization temperature for crystallization and stress relief heat treatment. The temperature during the heat treatment is 510°C to 570°C, the average heating rate during heat treatment is 2°C to 10°C...
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