Nanocrystal magnetically-soft alloy with low magnetic conductivity and preparation method of nanocrystal magnetically-soft alloy
A technology of nanocrystalline soft magnetism and low magnetic permeability, which is applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve problems such as patent publications that have not yet been found, and achieve increased DC resistance and stability, improved pass rate, The effect of reducing residual magnetism
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Embodiment 1
[0023] A low magnetic permeability nanocrystalline soft magnetic alloy, its composition and parts by weight are as follows:
[0024] Fe60-70 parts; Ni1-5 parts; Si5-10 parts; B5-10 parts; Nb5-10 parts; Cu0.7-1.3 parts; Al1-2 parts; Co0.1-1.7 parts.
[0025] The preparation method of the above-mentioned low magnetic permeability nanocrystalline soft magnetic alloy, the steps are as follows:
[0026] ⑴Accurate ingredients according to the formula, put the prepared materials into the intermediate frequency vacuum induction furnace and undergo vacuum melting (melting temperature reaches 1300-1500 ℃, melting time should be guaranteed for 2-4 hours, vacuum degree 1-0.2Pa) to form alloy solution, Pour the alloy solution into a rotating pouring pan with a cooling device (to ensure that the circulating water pressure is 0.1-0.2Mpa) to form an alloy ingot;
[0027] ⑵Put the alloy ingot into the medium frequency induction crucible on the spray belt equipment and then conduct secondary m...
Embodiment 2
[0030] A low magnetic permeability nanocrystalline soft magnetic alloy, its composition and parts by weight are as follows:
[0031] 60 parts of iron; 1 part of nickel; 5 parts of silicon; 5 parts of boron; 5 parts of niobium; 0.7 parts of copper; 1 part of aluminum; 0.1 part of cobalt.
[0032] The preparation method of the above-mentioned low magnetic permeability nanocrystalline soft magnetic alloy, the steps are as follows:
[0033] ⑴Accurate ingredients according to the formula, put the prepared materials into the intermediate frequency vacuum induction furnace for vacuum melting, the conditions of vacuum melting are melting temperature 1400-1600 ℃, melting time 2 hours, vacuum degree 1-0.2Pa, forming alloy solution, Pour the alloy solution into a rotating pouring pan with a cooling device to form an alloy ingot. The cooling device must ensure that the circulating water pressure is at 0.1-0.2Mpa;
[0034] ⑵Put the alloy ingot in step ⑴ into the intermediate frequency ind...
Embodiment 3
[0037] A low magnetic permeability nanocrystalline soft magnetic alloy, its composition and parts by weight are as follows:
[0038] 70 parts of iron; 5 parts of nickel; 10 parts of silicon; 10 parts of boron; 10 parts of niobium; 1.3 parts of copper; 2 parts of aluminum; 1.7 parts of cobalt.
[0039] The preparation method of the above-mentioned low magnetic permeability nanocrystalline soft magnetic alloy, the steps are as follows:
[0040] ⑴Accurate ingredients according to the formula, put the prepared materials into the intermediate frequency vacuum induction furnace for vacuum melting, the conditions of vacuum melting are that the melting temperature reaches 1600°C, the melting time is 4 hours, and the vacuum degree is 1-0.2Pa to form an alloy solution. The solution is poured into a rotating pouring pan with a cooling device to form an alloy ingot. The cooling device must ensure that the circulating water pressure is at 0.1-0.2Mpa;
[0041] ⑵Put the alloy ingot in step ...
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