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A kind of lanico magnetic wave-absorbing material and preparation method thereof

A technology of magnetic wave absorption and stoichiometric ratio, applied in the field of LaNiCo magnetic wave absorbing materials and its preparation, can solve problems such as physical hazards, poor electromagnetic environment in living space, and electromagnetic pollution

Active Publication Date: 2020-03-31
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of society and the advancement of science and technology, the application of electronic equipment is becoming more and more extensive. However, while electrical equipment brings great convenience to social production and life, it also brings serious electromagnetic pollution to people, resulting in electromagnetic pollution in people's living space. The environment is getting worse and worse, even causing serious harm to people's health

Method used

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  • A kind of lanico magnetic wave-absorbing material and preparation method thereof
  • A kind of lanico magnetic wave-absorbing material and preparation method thereof
  • A kind of lanico magnetic wave-absorbing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] refer to figure 1 , to prepare La 7.1 co 92.9 The magnetic absorbing material includes the following steps:

[0035] 1) La and Co metals with a purity ≥ 99.90%, according to La 7.1 co 92.9 Stoichiometric ratio ingredients;

[0036] 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 2-5 times;

[0037] 3) Keep the smelted ingot under vacuum protection at a temperature of 1000°C for 2 days and then quench it in ice water;

[0038] 4) Mechanically crush the obtained alloy ingot to obtain alloy coarse powder, then put zirconia balls and coarse powder into a zirconia tank at a mass ratio of 20:1, add absolute ethanol as a protective agent, and use QM-lSP planetary The type ball mill milled the alloy coarse powder for 15 hours, and the speed of the ball mill was 350 rpm.

[0039] Product test: mix according to the ratio of alloy powder: paraffi...

Embodiment 2

[0045] refer to figure 1 , to prepare La 7.1 Ni 1.4 co 91.5 The magnetic absorbing material includes the following steps:

[0046] 1) La, Co, and Ni metals with a purity ≥ 99.90%, according to La 7.1 Ni 1.4 co 91.5 Stoichiometric ratio ingredients;

[0047] 2) Smelting in a standard electric arc furnace under the protection of argon, in order to ensure the uniformity of the composition of the alloy, repeatedly turning and melting for 3-5 times;

[0048] 3) heat the smelted ingot at 900°C for 5 days under vacuum protection, and then quench it with ice water;

[0049] 4) Mechanically crush the obtained alloy ingot to obtain alloy coarse powder, then put the zirconia ball and the coarse powder into the zirconia tank at a mass ratio of 20:1, add gasoline as a protective agent, and use a QM-lSP planetary ball mill to The alloy coarse powder was ball milled for 20 hours, and the rotating speed of the ball mill was 320 rpm.

[0050] Product test: mix according to the ratio o...

Embodiment 3

[0056] refer to figure 1 , to prepare La 7.1 Ni 2.9 co 90 The magnetic absorbing material includes the following steps:

[0057] 1) La, Co, and Ni metals with a purity ≥ 99.90%, according to La 7.1 Ni 2.9 co 90 Stoichiometric ratio ingredients;

[0058] 2) Smelting in a standard electric arc furnace under the protection of argon, in order to ensure the uniformity of the composition of the alloy, repeatedly turning and melting for 3-5 times;

[0059] 3) heat the smelted ingot at 950°C for 3 days under vacuum protection, and then quench it in ice water;

[0060] 4) Mechanically crush the obtained alloy ingot to obtain alloy coarse powder, then put zirconia balls and coarse powder into a zirconia tank at a mass ratio of 15:1, add gasoline as a protective agent, and use a QM-lSP planetary ball mill to The alloy coarse powder was ball milled for 15 hours, and the rotating speed of the ball mill was 380 rpm.

[0061] Product testing: Alloy powder: paraffin wax = 4:1 (mass r...

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Abstract

The invention discloses a LaNiCo magnetic wave-absorbing material and a preparation method thereof. The method comprises the following steps: 1) batching; 2) smelting; 3) heat treatment; 4) ball milling to obtain the LaNiCo magnetic wave-absorbing material. This magnetic absorbing material has the characteristics of wide absorption frequency band, high absorbing efficiency, good thermal stability, good corrosion resistance and good oxidation resistance in the 2GHz‑18GHz microwave band. The advantage of this method is that the process is simple and the operability is strong.

Description

technical field [0001] The invention relates to a magnetic microwave absorbing material, in particular to a LaNiCo magnetic microwave absorbing material and a preparation method thereof. Background technique [0002] With the development of society and the advancement of science and technology, the application of electronic equipment is becoming more and more extensive. However, while electrical equipment brings great convenience to social production and life, it also brings serious electromagnetic pollution to people, resulting in electromagnetic pollution in people's living space. The environment is getting worse and worse, even causing serious harm to people's health. In order to solve the problem of electromagnetic pollution caused by electromagnetic radiation and leakage, people have carried out a lot of research. Among them, magnetic wave-absorbing materials are used to absorb electromagnetic waves, so as to reduce the radiation and interference of electromagnetic wave...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/07C22C1/02C22F1/10B22F1/00B22F9/04
CPCB22F1/0003B22F9/04B22F2009/042B22F2009/043C22C1/02C22C19/07C22C2202/02C22F1/002C22F1/10
Inventor 潘顺康于京京成丽春何煜罗家亮
Owner GUILIN UNIV OF ELECTRONIC TECH
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