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A method for improving the amorphous forming ability of fe‑si‑b‑p bulk amorphous alloys

An amorphous alloy and bulk technology, which is applied in the field of preparation of amorphous alloys, can solve the problems such as the unsatisfactory improvement of the amorphous forming ability of the alloy, achieves simple and feasible control conditions, improves the amorphous forming ability, and is easy to popularize and apply. Effect

Active Publication Date: 2017-02-22
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the improvement of alloy amorphous formation ability by this method is not ideal.

Method used

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  • A method for improving the amorphous forming ability of fe‑si‑b‑p bulk amorphous alloys
  • A method for improving the amorphous forming ability of fe‑si‑b‑p bulk amorphous alloys
  • A method for improving the amorphous forming ability of fe‑si‑b‑p bulk amorphous alloys

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Embodiment 1

[0033] In this embodiment, the molecular formula of the amorphous alloy material is Fe 76 Si 9 B 10 P 5 .

[0034] The preparation method of the amorphous alloy material comprises the following steps:

[0035] (1) select the raw material whose purity is more than 99.5%, and make ingredients according to the molecular formula of the amorphous alloy;

[0036] (2) Put the raw materials prepared in step 1 into the induction melting furnace for melting, and vacuumize to -5×10 -3 Below Pa, fill with nitrogen or argon atmosphere protection, keep warm for 20 to 30 minutes after melting, so that the alloy raw material is melted into a uniform molten steel, and then cooled with the furnace or injected into the mold to obtain the master alloy ingot;

[0037](3) After crushing the master alloy ingot obtained in step (2), put it into an open quartz glass tube, place it in the induction coil of the liquid quenching device, and evacuate it to -5×10 -3 Below Pa, it is filled with air or...

Embodiment 2

[0058] In Example 2, the molecular formula of the amorphous alloy material is exactly the same as that of the above-mentioned Example 1, both of which are Fe 76 Si 9 B 10 P 5 .

[0059] In Example 2, the preparation method of the amorphous alloy material is basically the same as that of the above-mentioned Example 1, except that in order to observe the influence of the pressure of the oxygen atmosphere on the amorphous forming ability of the alloy, a pressure of 3×10 4 Pa, 5×10 4 Pa, 7×10 4 The oxygen atmosphere of Pa is hydraulically poured the molten master alloy into Cu molds with different diameters, including Cu molds with diameters of 1mm, 2mm, 3mm, 4mm, etc., to obtain bulk amorphous alloy rod samples by copper mold casting method. Rod samples with a diameter of 3 mm were analyzed.

[0060] image 3 It shows the XRD patterns of the amorphous alloy rods with a diameter of 3 mm cast in the above-mentioned oxygen atmosphere at different pressures. From image 3 It...

Embodiment 3

[0062] In this embodiment, the molecular formula of the amorphous alloy material is Fe 76 P 5 (B 0.5 Si 0.3 C 0.2 ) 19

[0063] The preparation method of the amorphous alloy material comprises the following steps:

[0064] (1) select the raw material whose purity is more than 99.5%, and make ingredients according to the molecular formula of the amorphous alloy;

[0065] (2) Put the raw materials prepared in step 1 into the induction melting furnace for melting, and vacuumize to -5×10 -3 Below Pa, fill with nitrogen or argon atmosphere protection, keep warm for 20 to 30 minutes after melting, so that the alloy raw material is melted into a uniform molten steel, and then cooled with the furnace or injected into the mold to obtain the master alloy ingot;

[0066] (3) After crushing the master alloy ingot obtained in step (2), put it into an open quartz glass tube, place it in the induction coil of the liquid quenching device, and evacuate it to -5×10 -3 Below Pa, it is fi...

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Abstract

The invention provides method for improving the glass forming ability of Fe-Si-B-P series block amorphous alloy. The method is characterized in that when a molten mother alloy liquid is used to prepare a block alloy material through adopting a copper mold casting technology, the casting process is carried out in oxygen-containing atmosphere. Experiments confirm that the method can improve the glass forming ability of alloy, does not introduce too many other elements into amorphous alloy components, does not have great influences on the magnetic performance or other performances of the amorphous alloy, and allows conditions to be simply and easily controlled, so the method has good application prospect.

Description

technical field [0001] The invention relates to the technical field of preparation of amorphous alloys, in particular to a method for improving the amorphous forming ability of Fe-Si-B-P bulk amorphous alloys. Background technique [0002] Atoms in the internal structure of amorphous alloy materials are arranged in a long-range disordered state. Therefore, compared with traditional crystalline alloy materials, amorphous alloy materials exhibit many excellent properties, such as excellent mechanical properties, good processability, ultra-high corrosion resistance, excellent magnetic properties, etc. [0003] Fe-based amorphous alloy materials have excellent soft magnetic properties such as high saturation magnetic induction, high magnetic permeability, low loss, and low coercive force, and have the advantages of corrosion resistance, high strength, low raw material prices, and simple production processes. It is considered to be the best material to replace traditional silico...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02C22C1/03
Inventor 常春涛张建花王新敏李润伟
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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