Iron-based alloy wave absorbing material and preparation method thereof

A technology of absorbing materials and alloys, applied in the field of iron-based alloy absorbing materials and their preparation, can solve the problems of large thickness, unsatisfactory absorbing performance, narrow absorbing bandwidth, etc. The effect of a wide range of raw materials

Inactive Publication Date: 2015-08-12
黄鹏腾
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

FeNd alloy has been extensively studied for its excellent microwave-absorbing performance. Although certain results have been obtained, there are still some shortcomings such as insufficient microwave-absorbing performance, large thickness, and narrow microwave-absorbing bandwidth. In order to overcome these shortcomings, the present invention adds certain A certain amount of Si element is used to improve the wave-absorbing characteristics of Fe-based alloys. The invention provides a kind of Fe-based alloy wave-absorbing material and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Polish the surface of metal Fe, metal Nd and Si with a purity greater than 99.5%, and the atomic ratio is Fe 17 Nd 1.8 Si 0.2 ingredients. Put the prepared sample into the vacuum electric arc furnace, go through vacuuming, ventilation and washing operations, repeat three times, and then fill a certain amount of argon as a protective gas, start melting, each sample needs to be reversed after melting once, so Smelt three times. After the melting furnace cools down, take the sample out, put it into a quartz glass tube, and carry out vacuum sealing operation, and then put it into water to test its tightness. After checking that the seal is intact, put the glass tube into a box-type resistance furnace at 600 °C Annealed under conditions for 2 weeks. After annealing, directly put the glass tube into the mixture of ice and water for quenching. After fully cooling, take out and smash the glass tube, take out the sample, grind the scale on the surface of the sample, and put ...

Embodiment 2

[0026] Polish the surface of metal Fe, metal Nd and Si with a purity greater than 99.5%, and the atomic ratio is Fe 17 Nd 1.6 Si 0.4 ingredients. Put the prepared sample into the vacuum electric arc furnace, go through vacuuming, ventilation and washing operations, repeat three times, and then fill a certain amount of argon as a protective gas, start melting, each sample needs to be reversed after melting once, so Smelt three times. After the melting furnace cools down, take the sample out, put it into a quartz glass tube, and carry out vacuum sealing operation, and then put it into water to test its tightness. After checking that the seal is intact, put the glass tube into a box-type resistance furnace at 700 °C Annealed under conditions for 2 weeks. After annealing, directly put the glass tube into the mixture of ice and water for quenching. After fully cooling, take out and smash the glass tube, take out the sample, grind the scale on the surface of the sample, and put ...

Embodiment 3

[0028] Polish the surface of metal Fe, metal Nd and Si with a purity greater than 99.5%, and the atomic ratio is Fe 17 Nd 1.4 Si 0.6 ingredients. Put the prepared sample into the vacuum electric arc furnace, go through vacuuming, ventilation and washing operations, repeat three times, and then fill a certain amount of argon as a protective gas, start melting, each sample needs to be reversed after melting once, so Smelt three times. After the melting furnace cools down, take the sample out, put it into a quartz glass tube, and carry out vacuum sealing operation, and then put it into water to test its sealing. Annealed under conditions for 1 week. After annealing, directly put the glass tube into the mixture of ice and water for quenching. After fully cooling, take out and smash the glass tube, take out the sample, grind the scale on the surface of the sample, and put it into a mortar for mechanical preliminary crushing. After pulverization, use a planetary ball mill for b...

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PUM

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Abstract

The invention discloses an alloy micro-powder wave absorbing material and a preparation method thereof. The uniform alloy is prepared by the following steps: taking high purity Fe, Nd and Si as the raw materials, blending the metals according to a certain atom ratio, smelting the metals in an arc smelting furnace to obtain uniform alloy; sealing an alloy sample in a sealed vacuum quartz glass tube, subjecting the quartz glass tube to a heat treatment, quenching, then taking out the sample, primarily and mechanically grinding the sample in a mortar, then transferring the sample to a stainless steel ball-milling tank, carrying out high-energy ball milling under the protection of gasoline, after a while, pouring out the gasoline, taking out the sample powder, and drying the powder in the air to obtain the alloy micro-powder wave absorbing material. The provided iron-based alloy wave absorbing material has the advantages of simple technology, low cost, and wide wave absorbing frequency band.

Description

technical field [0001] The invention relates to a method for preparing a wave-absorbing material by using alloy micropowder, in particular to a preparation method for an iron-based alloy micropowder wave-absorbing material. Background technique [0002] In recent years, with the development of electronics and informatization, the electromagnetic waves generated by a large number of electronic products interfere with each other, which will lead to serious problems such as communication interruption and equipment failure. And too much electromagnetic radiation will directly and indirectly cause serious harm to our human body. Therefore, to protect against electromagnetic interference waves and avoid unnecessary losses, it has become a major topic in material science to find a material that can resist and weaken electromagnetic radiation. . As a functional material capable of absorbing electromagnetic waves, microwave absorbing materials can convert electromagnetic wave energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/12C22C33/04C21D1/26C21D1/18B22F1/00B22F9/04
Inventor 黄鹏腾
Owner 黄鹏腾
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