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Iron-based amorphous alloy powder and production method

An iron-based amorphous alloy and iron-based amorphous technology, applied in the field of amorphous alloy powder, can solve the problems of hindering the rapid cooling of the center part of the molten droplet, uneven crystallization transition of thin strips, and inability to obtain an amorphous structure. , to achieve the effect of improving the preparation speed, fast element deposition speed and meeting the performance requirements

Active Publication Date: 2018-06-29
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
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Effect test

Embodiment 1

[0032] The preparation of embodiment 1 Fe-P amorphous alloy powder

[0033] In this embodiment, the Fe content of the amorphous powder is 94.9wt%, and the P content is 5.1wt% of the composite coating.

[0034] Its preparation process comprises the following steps:

[0035] (1) Pretreatment of the surface of the metal substrate: the metal substrate is made of No. 45 steel plate, the surface to be plated is machined first, and then cleaned in 20wt% sodium hydroxide solution for 10 minutes to remove grease;

[0036] (2) Plating solution composition: ferrous chloride 2 mol / L, ferrous sulfate 0.5 mol / L, boric acid 45g / L, sodium hypophosphite 30g / L, potassium iodide 0.8g / L, sodium dodecylbenzenesulfonate 0.8g / L;

[0037] (3) Preparation of amorphous coating: the amorphous alloy coating is prepared by brush plating, 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...

Embodiment 2

[0041] The preparation of embodiment 2 Fe-Ni-P amorphous alloy powder

[0042] 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 10.2wt% of the composite coating, and the P content is 6.4wt%.

[0043] Its preparation process comprises the following steps:

[0044] (1) Pretreatment of the surface of the metal substrate: the metal substrate is made of No. 45 steel plate, the surface to be plated is milled and ground successively, and then cleaned in 20wt% sodium hydroxide solution for 10 minutes to remove grease;

[0045] (2) Electroplating solution composition: ferrous chloride 2.3mol / L, nickel sulfate 0.4mol / L, phosphoric acid 50ml / L, sodium hypophosphite 45g / L, potassium iodide 1g / L, tartaric acid 0.5g / L;

[0046] (3) Preparation of amorphous coating: The amorphous alloy coating is prepared by brush plating, the anode is made of graphite, and the current density of the electrode is 1A / mm 2 , ...

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Abstract

The invention relates to iron-based amorphous alloy powder and a preparation method thereof. The component of the alloy powder is 40-95 wt% of Fe, and alloy elements are elements which can be subjected to electrodeposition with iron and can be combination of one or more of P, Ni, Cr, Co, Mo, W, Re and the like. The preparation technology of the iron-based amorphous alloy powder comprises the stepsof (1) pre-treatment of a plated surface of a metal substrate, wherein the plated surface of the metal substrate can be derusted and degreased by adopting a mechanical or chemical method; (2) preparation of electroplate liquid, wherein the electroplate liquid is composed of ferrous salt (ferrous sulfate or ferrous chloride or a mixture of ferrous sulfate and ferrous chloride), medium-strong acid,complexing agent, reducing agent and alloy element additive; (3) preparation of amorphous alloy plating by adopting a brushing electroplating method, wherein the plating temperature is 30-70 DEG C, and the Ph value of plating liquid is smaller than 1; (4) stripping of the amorphous alloy plating; (5) ball-milling of amorphous alloy particles; (6) screening of the amorphous alloy powder.

Description

technical field [0001] The invention relates to an amorphous alloy powder, in particular to an iron-based amorphous alloy powder and a production method. 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 DC ...

Claims

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Application Information

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IPC IPC(8): H01F1/153H01F41/02
CPCH01F1/15308H01F1/1535H01F41/0253
Inventor 刘志红
Owner 蓬莱市超硬复合材料有限公司
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