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Novel Fe-Co-based wave absorbing micro powder and preparing method thereof

A technology of fe-co and micropowder, which is applied in the field of Er iron-cobalt-based alloy microwave-absorbing micropowder and its preparation, and the addition of Al, which can solve the problems of low saturation magnetization, poor microwave absorption ability, and low microwave permeability.

Inactive Publication Date: 2015-11-11
孙炜炜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low saturation magnetization of ferrite in the 1-18GHz frequency band, small microwave permeability, poor wave absorption ability, and thick matching thickness (centimeter level), the application of ferrite materials in this frequency band is greatly affected. the limitations of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Metals Fe, Co, Al, Er with a purity greater than 99.5% are classified as Fe 10 co 7 al 0.5 Er 1.5 10g sample raw materials are prepared in atomic proportions, and the prepared raw materials are melted into small alloy ingots in a vacuum electric arc furnace. The melted alloy ingots are put into a quartz glass tube for vacuum sealing, and then the sealed quartz glass tube is put into water for inspection. Its airtightness, after checking that the seal is intact, put it into a box-type resistance furnace, and perform homogenization annealing treatment under the ambient condition of 500°C. After annealing treatment for 15 days, it is quenched in a mixture of ice and water. After cooling, take out the sample for mechanical preliminary crushing, and collect Pour the pulverized powder into a ball mill tank, and under the protection of gasoline, use a planetary ball mill for ball milling. The ball milling speed is controlled at 200r / min. After 70 hours of ball milling, take ...

Embodiment 2

[0023] Metals Fe, Co, Al, Er with a purity greater than 99.5% are classified as Fe 10 co 7 al 0.7 Er 1.3 10g sample raw materials are prepared in atomic proportions, and the prepared raw materials are melted into small alloy ingots in a vacuum electric arc furnace. The melted alloy ingots are put into a quartz glass tube for vacuum sealing, and then the sealed quartz glass tube is put into water for inspection. Its tightness, put it into a box-type resistance furnace after checking that the seal is intact, and perform homogenization annealing treatment at 550 ° C. After annealing treatment for 15 days, quench it in a mixture of ice and water. After cooling, take out the sample for mechanical preliminary crushing, and collect Pour the pulverized powder into a ball mill tank, and under the protection of gasoline, use a planetary ball mill for ball milling. The ball milling speed is controlled at 250r / min. After 60 hours of ball milling, take out the alloy powder and dry it to ...

Embodiment 3

[0025] Metals Fe, Co, Al, Er with a purity greater than 99.5% are classified as Fe 10 co 7 AlEr atomic proportions are mixed into 20g sample raw materials, and the prepared raw materials are melted into small alloy ingots in a vacuum electric arc furnace. The melted alloy ingots are put into a quartz glass tube for vacuum sealing, and then the sealed quartz glass tube is put into water. Check its tightness, put it into a box-type resistance furnace after checking that the seal is intact, and perform homogenization annealing treatment at 600°C. After annealing treatment for 15 days, quench it in a mixture of ice and water, and take out the sample after cooling for preliminary mechanical crushing. Collect the pulverized powder and pour it into a ball mill tank. Under the protection of gasoline, use a planetary ball mill for ball milling. The ball milling speed is controlled at 300r / min. After 50 hours of ball milling, take out the alloy powder and dry it to get an alloy absorbin...

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PUM

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Abstract

The invention provides novel Fe-Co-based wave absorbing micro powder and a preparing method thereof. According to the method, Fe, Co, Al and Er are used as raw materials and are proportioned according to the atomic ratio of Fe10Co7AlxEr2-x (0.5<=x<=1), then smelting is conducted in a vacuum arc furnace, smelted alloy is placed in a vacuum glass tube for homogenizing annealing, then quenching and preliminary smashing are conducted, and finally, ball milling is conducted with a planetary ball mill under the protection of gasoline so that the wave absorbing micro powder can be obtained after the milled product is taken out and dried in the air.

Description

technical field [0001] The invention relates to an alloy microwave-absorbing micropowder material, in particular to an iron-cobalt-based alloy microwave-absorbing micropowder added with Al and Er and a preparation method thereof. Background technique [0002] With the increasingly wide application of electronic information technology in various fields, it brings convenience to people's life, but also brings serious electromagnetic pollution to the society and poses a serious threat to human health. As a functional material that can absorb electromagnetic waves, microwave absorbing materials can convert electromagnetic wave energy into other forms of energy, thereby suppressing electromagnetic wave radiation and interference, and have good results. Therefore, countries all over the world are rushing to invest a lot Manpower and material resources to research and develop high-performance absorbing materials have become one of the hot spots. [0003] Traditional absorbing mate...

Claims

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Application Information

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IPC IPC(8): B22F9/04C21D1/26H01F1/147H01F1/20
Inventor 孙炜炜
Owner 孙炜炜