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Preparation method of high-magnetic-loss alloy absorbent

An absorber and alloy technology, applied in the field of wave-absorbing materials, can solve the problem that the absorber is difficult to meet the P-band absorber, and achieve the effect of improving magnetic permeability, promoting magnetic moment precession, and improving magnetic permeability

Pending Publication Date: 2022-03-22
AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the derivation of the MaxWell equations and the formula of single-layer reflection loss, it is difficult for absorbers with dielectric loss and resistive loss to meet the needs of P-band absorbers.

Method used

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  • Preparation method of high-magnetic-loss alloy absorbent
  • Preparation method of high-magnetic-loss alloy absorbent
  • Preparation method of high-magnetic-loss alloy absorbent

Examples

Experimental program
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preparation example Construction

[0031] In view of this, the present invention provides a method of preparing a high magnetic loss consumption absorbent.

[0032] Please refer to figure 1 The preparation method of the high-magnetic exhaust gas consumption absorbent includes the following steps:

[0033] Step S10, the raw material powder is wet ball milling treatment to make the material sheet shape.

[0034] In this embodiment, the material powder is wet, and the material is sheet-shaped, thereby increasing the complex magnetic permeability of the absorbent.

[0035] Wherein, the raw material powder comprises a FESICR alloy and / or a FESICR base alloy. It will be appreciated that the FESICR base alloy refers to a variety of alloy powders that are FESICR-substrates. At the same time, the applicant found that when the selected raw material powder is a spherical shape having a particle diameter of no less than 2 μm, the absorbent performance obtained after treatment of the present invention is better.

[0036] When...

Embodiment 1

[0058] Weigh 10kg of FESICR powder; 40 kg of zirconia balls, and weigh 20 kg of acetone again. The zirconia ball, acetone, and the FESICR powder were poured into the stain, and the set frequency was 40 Hz, the aging time was 15 h, and the aging was completed after drying.

[0059] The dried Fesicr alloy was placed in a crucible, and the vacuum furnace was placed in a vacuum furnace, and the yield rate was 7.5 ° C / min, and the temperature was held at 400 ° C for 1 h, and then naturally cooled to room temperature.

[0060] The resulting particles and paraffin were mixed evenly, and in a cylindrical container with stirred lever and heated, two-piece magnets were placed outside the container, and the two magnets were in the container. Relative settings. The adjustment heating temperature was 100 ° C, the rotational speed was 100 to 200 rpm, and stirred after 10min, and then removed, the composite material in which the composite was 7 mm was pressed, and the inner diameter of 3 mm wa...

Embodiment 2

[0062] Example 2 and Example 1 were only 500 ° C for the first embodiment and Example 1 as in Example 1.

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Abstract

The invention discloses a preparation method of a high-magnetic-loss alloy absorbent, which comprises the following steps: step S10, carrying out wet ball-milling treatment on raw material powder so as to enable the material to be flaky; step S20, drying a product obtained in the step S10, placing the product in a vacuum environment at 400-600 DEG C, performing vacuum heat treatment for 1-3 hours, and cooling; step S30, mixing the product obtained in the step S20 with an adhesive to form paste, and applying a uniform magnetic field to the paste under the condition of keeping the paste; and S40, a product obtained in the step S30 is subjected to compression molding, and the high-magnetic-loss alloy absorbent is obtained. Wherein the raw material powder comprises a FeSiCr alloy and / or a FeSiCr-based alloy. The invention aims to prepare the absorbent which has high composite magnetic conductivity and can be applied to a P wave band.

Description

Technical field [0001] The present invention relates to the field of absorbing materials, and more particularly to a method for preparing high magnetic exhaustion absorbers. Background technique [0002] The absorbing material is extremely important for the weapons in modern warfare and strategic stealth. At present, domestic and foreign is actively developing low-frequency radar detection techniques, especially the radar detection techniques of P-band (0.3-1 GHz). Since the wavelength of P band band is longer than the common wavelength of the common XKU band (8-18 GHz), it has a great threat to the survival and protection of my weapons and equipment. [0003] In the study of P-band absorbing materials, the study of the absorbent is the weight. According to the formula of the MaxWell equation and the single layer reflex loss, the dielectric loss, the absorbent of resistance loss is difficult to meet the needs of the P-band absorbent. Inventive content [0004] The primary object...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04B22F1/068B22F1/10B22F1/142B22F1/14B22F3/02H01Q17/00
CPCB22F9/04B22F3/02H01Q17/004B22F2009/043
Inventor 王彦淇龙昌何惊华韩俊华王浩继胡钰琦
Owner AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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