Iron-based bulk amorphous soft magnetic alloy and preparation method thereof

A soft magnetic alloy, amorphous alloy technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problem that amorphous alloys are difficult to widely practically apply, and achieve the effects of low cost and simple preparation method.
CN101701327BActive Publication Date: 2012-07-04NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Publication Date
2012-07-04

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Abstract

The invention discloses an iron-based bulk amorphous soft magnetic alloy and a preparation method thereof; the molecular formula of the amorphous alloy is (Fe 0.5Co0.5) 70.7-xB20Si5Nb4.3Tbx; wherein the numeric range of x is x larger than or equal to 0 and less than or equal to 2.5; the amorphous alloy is obtained by adding a rare earth element Tb into FeCo BSiNb system. Compared with the prior art, the iron-based bulk amorphous soft magnetic alloy prepared by industrial material has bigger amorphous formation capability and excellent soft magnetic performance; the diameter of the prepared amorphous bar material is 2mm-3mm, the saturation magnetization strength is 0.69 T-0.92 T, and the coercive force is 2.1A / m-3.8 A / m, which are relatively row compared with other doped rare-earth elementsystems. The preparation method is simple and has lower cost. The iron-based bulk amorphous soft magnetic alloy can be used as a core of a magnetic sensor and is applied to fields such as information, communication and the like.
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Description

technical field

[0001] The invention relates to the field of amorphous alloys, in particular to a FeCoBSiNbTb series bulk amorphous alloy material with excellent soft magnetic properties prepared from industrial raw materials and a preparation method thereof. Background technique

[0002] Amorphous alloys are also called glassy alloys, which are usually prepared under extremely harsh conditions. The molten metal alloy is cooled at a faster cooling rate, and the formation and growth of crystal nuclei are inhibited during the rapid cooling process. , thus directly solidifying to form a long-range disordered amorphous alloy in structure. In 1938, Kramer reported for the first time that the amorphous film was successfully prepared by evaporative deposition (reference 1: J. Karmer, Z. Phys., 106 (1937) 675), and soon Brenner et al. adopted the method of electrodeposition Ni-P, Co-P amorphous alloy films have been prepared, and are used as surface coatings for metal surface prote...

Claims

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