Nanocrystalline soft magnetic composite material and preparation method thereof
A technology of nanocrystalline soft magnetic and composite materials, applied in magnetic materials, magnetic objects, electrical components, etc., can solve the complex process of nanocrystalline soft magnetic composite materials, large eddy current loss of soft magnetic composite materials, and magnetic properties of soft magnetic composite materials. problems such as low conductivity, to achieve the effects of excellent DC bias characteristics, guaranteed performance, and excellent magnetic properties
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[0022] Example 1:
[0023] In this embodiment, the alloy molecular formula of the nanocrystalline soft magnetic composite material is Fe 71 Cu 1 Nb 2.9 Si 14 B 11 Dy 0.1 , The following are the specific preparation steps:
[0024] (1) Alloy smelting: soft magnetic alloys are smelted in a vacuum melting furnace;
[0025] (2) Atomizing powder: directly spray the smelted alloy with nitrogen to obtain amorphous soft magnetic powder, and sieving to obtain powder with less than 100 mesh;
[0026] (3) Granularity ratio: the obtained amorphous powder is subjected to -400 mesh, -300 mesh, -200 mesh, -100 mesh classification treatment and then mixed, the mass percentage content of the mixed powder is: -100~+200 mesh 30%, -200~+300 mesh accounted for 50%, -300~+400 mesh accounted for 15%, -400 mesh accounted for 5%;
[0027] (4) Passivation treatment: mix the amorphous powder with a good particle size ratio and phosphoric acid alcohol diluent evenly, the amount of phosphoric acid alcohol diluent ...
Example Embodiment
[0034] Example 2:
[0035] In this embodiment, the alloy molecular formula of the nanocrystalline soft magnetic composite material is Fe 75 Cu 2 Nb 2 P 3 Si 10 B 5 Dy 1 La 1 Pr 1 , The following are the specific preparation steps:
[0036] (1) Alloy smelting: soft magnetic alloys are smelted in a vacuum melting furnace;
[0037] (2) Atomizing powder: directly spray the smelted alloy with nitrogen to obtain amorphous soft magnetic powder, and sieving to obtain powder with less than 100 mesh;
[0038] (3) Particle size ratio: the obtained amorphous powder is subjected to -400 mesh, -300 mesh, -200 mesh, -100 mesh classification treatment and then mixed, the mass percentage content of the mixed powder is: -100~+200 mesh 40%, -200~+300 mesh accounted for 25%, -300~+400 mesh accounted for 10%, -400 mesh accounted for 25%;
[0039] (4) Passivation treatment: mix the amorphous powder with good particle size ratio and acetone phosphate diluent evenly, the dosage of acetone phosphate diluent i...
Example Embodiment
[0046] Example 3:
[0047] In this embodiment, the alloy molecular formula of the nanocrystalline soft magnetic composite material is Fe 75 Cu 3 P 1 Si 10 B 10 Ho 0.5 Yb 0.5 , The following are the specific preparation steps:
[0048] (1) Alloy smelting: soft magnetic alloys are smelted in a vacuum melting furnace;
[0049] (2) Atomizing powder: directly spray the smelted alloy with nitrogen to obtain amorphous soft magnetic powder, and sieving to obtain powder with less than 100 mesh;
[0050] (3) Granularity ratio: the obtained amorphous powder is subjected to -400 mesh, -300 mesh, -200 mesh, -100 mesh classification treatment and then mixed, the mass percentage content of the mixed powder is: -100~+200 mesh 20%, -200~+300 mesh accounts for 30%, -300~+400 mesh accounts for 30%, -400 mesh accounts for 20%;
[0051] (4) Passivation treatment: mix the amorphous powder with a good particle size ratio and the phosphoric acid aqueous solution uniformly. The amount of phosphoric acid aqueo...
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