Annealing process for reducing residual magnetism of nanocrystalline magnetic core
An annealing process and nanocrystalline technology, applied in the direction of magnetic core manufacturing, process efficiency improvement, magnetic materials, etc., can solve the problems of limited application, miniaturization of electronic components with low disadvantage, high coercivity, and achieve excellent comprehensive performance, The effect of increasing the first crystallization temperature and low coercivity
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Embodiment 1
[0055] A kind of annealing process that reduces the remanence of nanocrystalline magnetic core, comprises the steps:
[0056] (1) Winding the nanocrystalline ribbon into an annular nanocrystalline magnetic core;
[0057] (2) Put the nanocrystalline magnetic core into the vacuum annealing furnace for heat treatment;
[0058] (3) Put the heat-treated nanocrystalline magnetic core into a vacuum annealing furnace for heat treatment again.
[0059] In the step (1), the thickness of the nanocrystalline ribbon is 15 μm, and the width is 20 mm.
[0060] In the step (1), the nanocrystalline ribbon is an iron-based nanocrystalline ribbon, and the iron-based nanocrystalline ribbon includes the following elements by weight percentage: Si: 14%, B: 7%, Nb: 1%, Cu: 1.6%, Zr: 4%, Al: 0.5%, and the balance is Fe.
[0061] The iron-based nanocrystalline ribbon also includes Ga: 0.4%, V: 0.1%, Ti: 0.2, Mn: 1%, Cr: 0.5%, Mo: 0.8%, C: 1.2%, Ge: 0.01%, P : 0.001%, Vb: 1.4%, Ta: 0.3%, and W: 0.0...
Embodiment 2
[0077] A kind of annealing process that reduces the remanence of nanocrystalline magnetic core, comprises the steps:
[0078] (1) Winding the nanocrystalline ribbon into an annular nanocrystalline magnetic core;
[0079] (2) Put the nanocrystalline magnetic core into the vacuum annealing furnace for heat treatment;
[0080] (3) Put the heat-treated nanocrystalline magnetic core into a vacuum annealing furnace for heat treatment again.
[0081] In the step (1), the nanocrystalline ribbon has a thickness of 18 μm and a width of 22 mm.
[0082] In the step (1), the nanocrystalline ribbon is an iron-based nanocrystalline ribbon, and the iron-based nanocrystalline ribbon includes the following elements by weight percentage: Si: 14.5%, B: 7.5%, Nb: 1.5%, Cu: 1.65%, Zr: 4.5%, Al: 0.8%, and the balance is Fe.
[0083] The iron-based nanocrystalline ribbon also includes Ga: 0.5%, V: 0.2%, Ti: 0.3%, Mn: 1.5%, Cr: 0.8%, Mo: 0.9%, C: 1.25%, Ge: 0.02%, P: 0.002%, Vb: 1.5%, Ta: 0.4%, an...
Embodiment 3
[0099] A kind of annealing process that reduces the remanence of nanocrystalline magnetic core, comprises the steps:
[0100] (1) Winding the nanocrystalline ribbon into an annular nanocrystalline magnetic core;
[0101] (2) Put the nanocrystalline magnetic core into the vacuum annealing furnace for heat treatment;
[0102] (3) Put the heat-treated nanocrystalline magnetic core into a vacuum annealing furnace for heat treatment again.
[0103] In the step (1), the nanocrystalline ribbon has a thickness of 20 μm and a width of 25 mm.
[0104] In the step (1), the nanocrystalline ribbon is an iron-based nanocrystalline ribbon, and the iron-based nanocrystalline ribbon includes the following elements by weight percentage: Si: 15%, B: 8%, Nb: 2%, Cu: 1.7%, Zr: 5%, Al: 1.0%, and the balance is Fe.
[0105] The iron-based nanocrystalline ribbon also includes Ga: 0.6%, V: 0.3%, Ti: 0.4%, Mn: 2%, Cr: 1.0%, Mo: 1.0%, C: 1.3%, Ge: 0.03%, P: 0.003%, Vb: 1.6%, Ta: 0.5%, and W: 0.06%. ...
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