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A kind of iron-based amorphous powder and preparation method thereof

An iron-based amorphous and powder technology, applied in the field of amorphous alloy powder, can solve the problems such as hindering the rapid cooling of the central part of the molten droplet, unable to obtain an amorphous structure, uneven crystallization transformation of thin strips, etc. The effect of speed, shortening of ball milling time, and large wire deformation

Active Publication Date: 2020-05-22
蓬莱市超硬复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the existence of this water vapor film reduces the cooling intensity, it hinders the rapid cooling of the center part of the molten droplet.
As a result, the central part of the powder cannot obtain an amorphous structure, which affects device performance
Due to the limited cooling intensity, the aerosol method can only prepare amorphous alloy powder with strong amorphous forming ability, and the production cost is high
The advantage of the direct crushing method is that the selectivity to the material is not strong, and the material utilization rate is high, but the embrittlement annealing of the amorphous thin strip is required, and it is easy to cause uneven crystallization transformation inside the thin strip due to uneven annealing, and in the After crushing, it is easy to produce powder particles with sharp angles, which brings difficulties to the subsequent processing of powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation of embodiment 1 Fe-P amorphous powder

[0036] In this embodiment, the Fe content of the amorphous powder is 92.7wt%, and the P content is 7.3wt% of the composite coating.

[0037] Its preparation process comprises the following steps:

[0038] (1) Select φ 3mm iron wire, use acid solution to remove rust and alkaline solution to degrease;

[0039] (2) Wiring: Parallel wiring in the same plane, the distance between the wires is 2mm;

[0040] (3) Preparation of amorphous coating;

[0041] Plating solution composition: ferrous chloride 2 mol / L, ferrous sulfate 0.5 mol / L, boric acid 40g / L, sodium hypophosphite 45g / L, potassium iodide 0.8g / L, sodium dodecylbenzenesulfonate 0.8g / L L;

[0042] The brush plating method is used to prepare the amorphous alloy coating, the anode is made of graphite, and the current density of the electrode is 0.8A / mm 2 , the relative movement speed of the electrode is 10m / min, the plating temperature is 45°C, and the Ph value...

Embodiment 2

[0046] The preparation of embodiment 2 Fe-Ni-P amorphous powder

[0047] In the preparation of the Fe-Ni-P amorphous alloy powder in this example, the Fe content of the powder is 81.3wt%, the Ni content is 10.6wt% of the composite coating, and the P content is 6.1wt%.

[0048] Its preparation process comprises the following steps:

[0049] (1) Select φ3mm iron wire, use acid solution to remove rust and alkaline solution to degrease;

[0050] (2) Wiring: Parallel wiring in the same plane, the distance between the wires is 2mm;

[0051] (3) Preparation of amorphous coating;

[0052] Plating solution composition: ferrous chloride 2.3mol / L, nickel sulfate 0.45mol / L, phosphoric acid 50ml / L, sodium hypophosphite 40g / L, potassium iodide 1g / L, tartaric acid 0.5g / L;

[0053] Brush plating preparation process parameters: graphite plate is used for the anode, and the current density of the electrode is 0.8A / mm 2 , the relative movement speed of the electrode is 10m / min, the plating ...

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Abstract

The invention disclsoes an iron-based amorphous powder and a production method thereof. The iron-based amorphous powder component is 40-95 wt% of Fe, the alloy element is an element which can be electrically deposited together with the iron, and the alloy element is one element or a combination of more elements such as P, Ni, Cr, Co, Mo, W, Re and the like. The preparation method comprises the following steps that iron or iron alloy wires or wire rods is selected for rust removal and degreasing; (2), flat cable; (3), amorphous coatings is plated on the electric brushes on the two sides of theflat cable by adopting an electric brush plating mode; (4), the amorphous alloy composite wires or wire rods without lubricating drawing and plating is adopted; (5), the amorphous alloy particles aresubjected to ball milling; and (6), iron-based amorphous powder with different thicknesses is screened out.

Description

technical field [0001] The invention relates to an amorphous alloy powder, in particular to an iron-based amorphous powder and a preparation method thereof. Background technique [0002] With the development of electronic power and communication industry, electronic components are developing in the direction of miniaturization, high frequency and high current, and the requirements for electromagnetic compatibility of electronic equipment are getting higher and higher. The traditional amorphous strip core , soft ferrite and metal magnetic powder cores cannot meet the demand, and the application is limited. The main performance is: (1) The eddy current induced by the amorphous strip iron core causes a large loss when it works at high frequency, which limits its application in the high frequency field; (2) The soft magnetic ferrite has low high frequency loss, but the saturation magnetic induction (3) Metal magnetic powder cores have problems such as high frequency loss, poor ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02C25D3/56C25D5/06B22F1/00B22F9/04
CPCB22F1/0003B22F9/002B22F9/04B22F2009/043C22C33/003C22C45/02C25D3/56C25D3/562C25D5/06
Inventor 刘志红
Owner 蓬莱市超硬复合材料有限公司