Preparation for block amorphous nanometer crystal double-phase composite soft magnetic alloy
An amorphous nanocrystalline and composite soft magnetic technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of shape and size restrictions, complex shapes, etc., achieve low cost, high saturation magnetic induction, and easy industrialization Effect
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Embodiment 1
[0011] Embodiment 1: bulk amorphous nanocrystalline dual-phase composite Fe 85.4 Zr 3.3 Nb 3.3 B 3 Si 3 Al 1 Cu 1 Soft magnetic alloys and their preparation. The preparation process of the bulk alloy is as described above. During vacuum smelting, the vacuum degree is 6×10 -3 Pa, in the preparation of the amorphous strip, the shielding gas is Ar, the line speed of the copper roll is 50m / s, and the thickness of the obtained amorphous strip is 14 microns, and the width is 20 mm. A planetary low-temperature ball mill was used to crush the amorphous ribbon into amorphous powder with a particle size of about 15 microns. The ball milling temperature was -30°C, the rotation speed was 400 r / min, the ball-to-material ratio was 10, and the ball milling time was 15 hours. The high-pressure sintering temperature is 450°C, the sintering pressure is 5.5GPa, and the sintering time is 3min. The size of the obtained bulk amorphous nanocrystalline dual-phase composite alloy is Φ25×10mm,...
Embodiment 2
[0012] Embodiment 2: Bulk amorphous nanocrystalline dual-phase composite Fe 86 Zr 5 Nb 6 B 3 Soft magnetic alloys and their preparation. The preparation process of the bulk alloy is as described above. During vacuum smelting, the vacuum degree is 6×10 -3 Pa, in the preparation of the amorphous strip, the protective gas is Ar, the line speed of the copper roll is 70m / s, and the thickness of the obtained amorphous strip is 11 microns, and the width is 10 mm. A planetary low-temperature ball mill was used to crush the amorphous ribbon into an amorphous powder with a particle size of about 12 microns. The ball milling temperature was -100°C, the rotation speed was 500r / min, the ball-to-material ratio was 15, and the ball milling time was 20h. The high-pressure sintering temperature is 350°C, the sintering pressure is 3.5GPa, and the sintering time is 5min. The size of the obtained bulk amorphous nanocrystalline dual-phase composite alloy is Φ25×10mm, the relative density is ...
Embodiment 3
[0013] Embodiment 3: Bulk amorphous nanocrystalline dual-phase composite Fe 86 Zr 5.5 Nb 5.5 B 3 Soft magnetic alloys and their preparation. The preparation process of the bulk alloy is as described above. During vacuum smelting, the vacuum degree is 6×10 -3 Pa, in the preparation of the amorphous strip, the shielding gas is Ar, the line speed of the copper roll is 60m / s, and the thickness of the obtained amorphous strip is 10 microns, and the width is 10 mm. A planetary low-temperature ball mill was used to crush the amorphous ribbon into an amorphous powder with a particle size of about 10 microns. The ball milling temperature was -5°C, the rotational speed was 450 r / min, the ball-to-material ratio was 20, and the ball milling time was 10 h. The high-pressure sintering temperature is 480°C, the sintering pressure is 5.5GPa, and the sintering time is 3min. The size of the obtained bulk amorphous nanocrystalline dual-phase composite alloy is Φ25×10mm, the relative densit...
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