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Preparation method of nano-crystal soft magnetic alloy elements

A nanocrystalline soft magnetic and nanocrystalline alloy technology, applied in the field of soft magnetic materials, can solve problems such as being unsuitable for industrial production, single product shape, product performance degradation, etc., and achieve high stability, complex and diverse shapes, and high saturation magnetic induction intensity. Effect

Active Publication Date: 2009-06-17
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CN 1613584A provides a block nano-soft magnetic alloy prepared by high pressure using a six-sided top hydraulic press, but the shape of the product is simple, and because pyrophyllite is easy to contaminate the block, resulting in a decline in product performance, it is not suitable for industrial production
CN 101020987A provides a method for preparing nanocrystalline soft magnetic alloy by microwave rapid crystallization. This method is only suitable for crystallization treatment of rapidly quenched amorphous strips. The process requires high technology and the shape of the product is single. Its industrial implementation and application There are certain limitations in scope

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  • Preparation method of nano-crystal soft magnetic alloy elements

Examples

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Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of Nanocrystalline Soft Magnetic Alloy Fe 73.5 Si 13.5 B 9 Nb 3 Cu 1 :

[0030] ① Place the powders of each component of the nanocrystalline alloy element in a ball milling tank, and ball mill for 30 hours under an argon atmosphere to obtain a nanocrystalline alloy powder; wherein the rotating speed of the ball milling tank is 300 rpm, the ball-to-material ratio is 7:1, and the grinding medium adopts Wear-resistant steel ball;

[0031] ②Knead the nanocrystalline alloy powder prepared in step ① and the binder polyethylene on a mixer for 1.2 hours, and then granulate on an extruder; after granulation, inject at an injection temperature of 120°C and an injection pressure of 55MPa Forming to obtain the desired shape of the soft magnetic alloy green body. Wherein the volume ratio of the nanocrystalline alloy powder and the binder is 70:30;

[0032] ③Immerse the soft magnetic alloy green body prepared in step ② in the degreasing solvent trichlorethylene at ...

Embodiment 2

[0034] Preparation of Nanocrystalline Soft Magnetic Alloy Fe 73.5 Si 13.5 B 9 Nb 3 Cu 1 :

[0035] ① Place the powders of each component of the nanocrystalline alloy element in a ball milling tank, and ball mill for 40 hours under an argon atmosphere to obtain a nanocrystalline alloy powder; wherein the rotating speed of the ball milling tank is 300 rpm, the ball-to-material ratio is 7:1, and the grinding medium adopts Wear-resistant steel ball;

[0036] ②Knead the nanocrystalline alloy powder prepared in step ① and the binder paraffin on the mixer for 1.5h, and then granulate on the extruder; after granulation, injection molding is performed at an injection temperature of 120°C and an injection pressure of 60MPa , to obtain the desired shape of the soft magnetic alloy green body. Wherein the volume ratio of the nanocrystalline alloy powder and the binder is 70:30;

[0037] ③Immerse the soft magnetic alloy green body prepared in step ② in the degreasing solvent acetone ...

Embodiment 3

[0039] Preparation of Nanocrystalline Soft Magnetic Alloy Fe 73.5 Si 13.5 B 9 Nb 3 Cu 1 :

[0040] ① Place the powders of each component of the nanocrystalline alloy element in a ball milling tank, and ball mill for 50 hours under an inert protective atmosphere to obtain a nanocrystalline alloy powder; wherein the rotating speed of the ball milling tank is 300 rpm, the ball-to-material ratio is 7:1, and the grinding medium adopts Wear-resistant steel ball;

[0041] ②Knead the nanocrystalline alloy powder prepared in step ① and the binder stearic acid on the mixer for 1.5 hours, and then granulate on the extruder; after granulation, the injection temperature is 130°C and the injection pressure is 60MPa. Injection molding to obtain the desired shape of the soft magnetic alloy green body. Wherein the volume ratio of the nanocrystalline alloy powder and the binder is 75:25;

[0042]③Immerse the soft magnetic alloy green body prepared in step ② in the degreasing solvent tric...

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Abstract

The invention discloses a method for preparing a nano-crystalline soft magnetic alloy component, which comprises the following steps: (1) putting powder of each component of nano-crystalline alloy elements into a ball mill jar, and milling the powder for 15 to 50 hours under protective atmosphere of inert gas to obtain nano-crystalline alloy powder; (2) adding adhesive into the nano-crystalline alloy powder prepared in step (1) to carry out injection molding to obtain a soft magnetic alloy blank; and (3) extracting and degreasing the soft magnetic alloy blank prepared in step (2), and then placing the treated soft magnetic alloy blank into a microwave smelting device to be sintered so as to obtain the nano-crystalline soft magnetic alloy component. The method for preparing the nano-crystalline soft magnetic alloy component is not only suitable for large-scale industrialized production, but also prepares products with complex and various shapes, and has the advantages of high magnetic conductivity, high saturated magnetic induction density, low coercive force, low loss and high stability.

Description

technical field [0001] The invention relates to the technical field of soft magnetic materials in metal functional materials, in particular to a preparation method of a nanocrystalline soft magnetic alloy element. Background technique [0002] Nanocrystalline soft magnetic alloy is a brand-new high-performance material. It successfully obtains high magnetic permeability, high saturation magnetic induction, and low coercivity through the ferromagnetic coupling of nanoscale ultrafine grains and amorphous phases. Force, low loss and high stability, known as a new generation of soft magnetic alloy. In terms of soft magnetic properties, nanocrystalline alloys not only maintain the high saturation magnetic induction value of iron-based amorphous alloys, but also reach or exceed those of permalloy and Co-based amorphous alloys in terms of initial magnetic permeability and medium-high frequency characteristics. Level. [0003] The application of this material in the fields of elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/16B22F3/22H01F1/22
Inventor 马国超向其军郭忠臣
Owner BYD CO LTD
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