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ErFeV magnetic wave-absorbing material and preparation method thereof

A magnetic wave absorbing, er10.5fe89.5 technology, applied in the field of magnetic microwave absorbing materials, can solve the problems of no saturation magnetization and magnetic permeability, restricting the application of materials, failing to achieve light weight and strong absorption, etc., to achieve good Microwave absorption characteristics, low cost, low price effect

Inactive Publication Date: 2015-03-04
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ferrite type and metal (alloy) magnetic powder are the two classic types of traditional microwave absorbing materials. However, ferrite materials, which are deeply affected by their own defects in application, not only do not have a large enough saturation in the commonly used frequency range. Magnetization and magnetic permeability are not up to the requirements of light weight and strong absorption. These deficiencies seriously restrict the application of this material.

Method used

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  • ErFeV magnetic wave-absorbing material and preparation method thereof
  • ErFeV magnetic wave-absorbing material and preparation method thereof
  • ErFeV magnetic wave-absorbing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of Er 10.5 Fe 89.5 (Atomic percentage) concrete implementation steps:

[0028] 1) Er and Fe metals with a purity ≥ 99.90%, according to Er 10.5 Fe 89.5 The stoichiometric ratio of the atomic percentage of the ingredients;

[0029] 2) Smelting in a standard electric arc furnace under the protection of argon, in order to ensure that the composition of the alloy is uniform, repeatedly turning and melting for 3 to 4 times;

[0030] 3) Keep the smelted ingot under vacuum protection at a temperature of 700°C for 7 days and then quench it in ice water;

[0031] 4) Mechanically crush the obtained alloy ingot to obtain alloy coarse powder, then put stainless steel balls and coarse powder into a stainless steel tank at a mass ratio of 15:1, add gasoline as a protective agent, and use a QM-lSP planetary ball mill to grind the alloy The coarse powder ball milled for 60 hours, and the ball mill rotating speed was 350 rpm;

[0032] Product test: mix according to the...

Embodiment 2

[0038] Preparation of Er 10.5 Fe 87.5 V 2 The specific implementation steps of (atomic percentage) are:

[0039] 1) Er, Fe, V metals with a purity ≥ 99.90%, according to Er 10.5 Fe 87.5 V 2 Stoichiometric ratio ingredients of molecular formula;

[0040] 2) Smelting in a standard electric arc furnace under the protection of argon, in order to ensure that the composition of the alloy is uniform, repeatedly turning and melting for 3 to 4 times;

[0041] 3) Keep the smelted ingot under vacuum protection at a temperature of 700°C for 7 days and then quench it in ice water;

[0042] 4) The obtained alloy ingot is mechanically crushed to obtain coarse alloy powder, and then the stainless steel ball and the coarse powder are

[0043] Put the powder into a stainless steel tank at a mass ratio of 15:1, add gasoline as a protective agent, and use a QM-lSP planetary ball mill to mill the alloy coarse powder for 60 hours at a speed of 350 rpm.

[0044] Product testing: mix according ...

Embodiment 3

[0048] Preparation of Er 10.5 Fe 85.5 V 4 The specific implementation steps of (atomic percentage) are:

[0049] 1) Er, Fe, V metals with a purity ≥ 99.90%, according to Er 10.5 Fe 85.5 V 4 Stoichiometric ratio ingredients of molecular formula;

[0050] 2) Smelting in a standard electric arc furnace under the protection of argon, in order to ensure that the composition of the alloy is uniform, repeatedly turning and melting for 3 to 4 times;

[0051] 3) Keep the smelted ingot under vacuum protection at a temperature of 700°C for 7 days and then quench it in ice water;

[0052] 4) Mechanically crush the obtained alloy ingot to obtain alloy coarse powder, then put stainless steel balls and coarse powder into a stainless steel tank at a mass ratio of 15:1, add gasoline as a protective agent, and use a QM-lSP planetary ball mill to grind the alloy The coarse powder ball milled for 60 hours, and the ball mill rotating speed was 350 rpm;

[0053] Product testing: Alloy powde...

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Abstract

The invention discloses an ErFeV magnetic wave-absorbing material. The alloy comprises the following atoms in percentage: 10.5 percent of Er, 83.5-89.5 percent of Fe and 0-6 percent of V. The ErFeV magnetic wave-absorbing material is prepared by the method comprising the following main steps: taking metals Er, Fe and V with the purity of more than or equal to 99.90 percent as raw materials, smelting under argon shield, performing homogenizing thermal treatment on a cast ingot at the temperature of 600-800 DEG C in vacuum, quenching by using ice water, mechanically crushing, and ball-milling into powder. The ErFeV alloy disclosed by the invention has good wave-absorbing performance and wide absorption band in the microwave band of 2-18GHz and has the advantages of simple preparation process, abundant raw materials, low price and the like. According to the magnetic wave-absorbing material, the ErFeV magnetic wave-absorbing material disclosed by the invention is suitable for preparing microwave absorption products with wide absorption band, good wave-absorbing performance and low cost.

Description

technical field [0001] The invention belongs to magnetic microwave absorbing materials, in particular to ErFeV magnetic microwave absorbing materials and a preparation method thereof. Background technique [0002] As electromagnetic waves in the GHz frequency range are widely used in various fields such as local area networks, mobile phones, and radar systems, electromagnetic radiation has caused serious electromagnetic pollution to the human living environment and a serious threat to human health. In order to solve the harm caused by electromagnetic radiation, people have carried out a lot of research work. Among them, magnetic wave-absorbing materials are used to convert electromagnetic wave energy into other forms of energy, so as to suppress the radiation and interference of electromagnetic waves, which has a good effect. For example, if magnetic wave-absorbing materials are applied to the surface of electronic products such as TVs, computers, and mobile communications,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/12C22C33/04B22F9/04H01F1/14
Inventor 成丽春潘顺康熊吉磊饶光辉周怀营
Owner GUILIN UNIV OF ELECTRONIC TECH
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