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A kind of preparation method of soft magnetic alloy coating

A soft magnetic alloy and coating technology, which is applied in metal processing equipment, inorganic material magnetism, transportation and packaging, etc., can solve the problems of complex preparation process, high preparation cost, environmental pollution cost of coating, etc., and achieve simple coating process. , the effect of easy processing

Active Publication Date: 2017-11-14
GRIMAT ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current magnetic shielding materials for low-frequency magnetic fields have the following deficiencies: traditional high-permeability soft magnetic materials are mostly used in the form of strips, which are difficult to cover for more complex surfaces; and magnetic fibers need to be prepared into composite materials when used, and the preparation process is relatively difficult. Complicated; the process control of thermal spray coating prepared by amorphous alloy is extremely strict, and the preparation cost is high; the coating prepared by chemical deposition or physical vapor deposition method has the disadvantages of polluting the environment or high cost, and is not suitable for large Area Masking Products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The gas-atomized Fe17Ni81Mo2 soft magnetic alloy powder is sieved through 200-300 mesh, and the soft magnetic alloy powder with a particle size of 50-70µm is selected for heat treatment; the heat treatment process is: vacuum atmosphere, heat treatment temperature is 900 ° C, holding time 1 Hours, then cooled to 600°C over 2 hours, and finally filled with argon gas at a cooling rate of 500°C / h to rapidly cool to 150°C out of the furnace.

[0021] The heat-treated Fe17Ni81Mo2 soft magnetic alloy powder is mixed with epoxy resin castables (JY-9715A and JY-9715B) in proportion to make a mixed slurry, wherein the mass percentage of Fe17Ni81Mo2 soft magnetic alloy powder is 86%, epoxy resin The mass percentage of the resin castable is 14%; the epoxy resin castable is made by mixing JY-9715A and JY-9715B in a mass ratio of 1:1.

[0022] Brush the prepared slurry evenly in the mold through a 100-mesh screen to form a wet film; the prepared wet film is kept at 90°C for 1 hour un...

Embodiment 2

[0025] The gas-atomized FeNi80 soft magnetic alloy powder is sieved through 200-300 mesh, and the soft magnetic alloy powder with a particle size of 50-70µm is selected for heat treatment; the heat treatment process is: hydrogen atmosphere, heat treatment temperature is 800 ° C, holding time 1 hours, and then cooled to 600°C over 2 hours, and finally filled with argon gas at a cooling rate of 400°C / h and rapidly cooled to 150°C and released from the furnace.

[0026] Mix the heat-treated FeNi80 soft magnetic alloy powder with epoxy resin castables (JY-9715A and JY-9715B) in proportion to make a mixed slurry, wherein the mass percentage of FeNi80 soft magnetic alloy powder is 70%, epoxy The mass percentage of the resin castable is 30%; the epoxy resin castable is made by mixing JY-9715A and JY-9715B in a mass ratio of 1:1.

[0027] Brush the prepared slurry evenly in the mold through a 100-mesh screen to form a wet film; the prepared wet film is kept at 90°C for 0.5 hours under...

Embodiment 3

[0030] The gas-atomized FeNi50 soft magnetic alloy powder is sieved through 200 mesh to 300 mesh, and the magnetic powder with a particle size of 50-70µm is selected for heat treatment; the heat treatment process is: vacuum atmosphere, heat treatment temperature is 700 ° C, and the holding time is 1 hour. Then cool to 600°C after 2 hours, and finally fill with argon and cool to 150°C at a cooling rate of 350°C / h.

[0031] Mix the heat-treated FeNi50 soft magnetic alloy powder with epoxy resin castables (JY-9715A and JY-9715B) in proportion to make a mixed slurry, wherein the mass percentage of FeNi50 soft magnetic alloy powder is 90%, epoxy The mass percentage of the resin casting material is 10%, and the epoxy resin casting material is made by mixing JY-9715A and JY-9715B in a mass ratio of 1:1.

[0032] Brush the prepared slurry evenly in the mold through a 100-mesh screen to form a wet film. The wet film is kept at 90°C for 1 hour under vacuum to eliminate air bubbles, and ...

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PUM

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Abstract

The invention belongs to the technical field of electromagnetic shielding, and discloses a preparation method of a soft magnetic alloy coating with good magnetic conduction function. The preparation method of the soft magnetic alloy coating includes the steps of: classification of soft magnetic alloy powder, heat treatment of soft magnetic alloy powder, batching, molding and curing. The prepared soft magnetic alloy coating has good initial magnetic permeability under DC magnetic field, can be applied to the field of low-frequency magnetic field shielding, and has simple preparation process and easy processing, and is suitable for shielding products of any shape.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic shielding, and in particular relates to a preparation method of a soft magnetic alloy coating with good magnetic conduction function. Background technique [0002] Iron-based high-permeability soft magnetic materials, such as pure iron, silicon steel sheets, permalloy, and nanocrystals, are currently the most widely used magnetic shielding materials for low-frequency magnetic fields. However, ferromagnetic materials with high magnetic permeability are generally obtained by mechanical processing, which not only reduces the magnetic shielding performance of the material, but also increases energy consumption and cost, which reduces its cost performance and limits its application. [0003] With the rapid development of the aerospace industry and the aviation industry, the magnetic shielding shell will no longer be used as a separate component, but will be attached to other components in the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/22B22F1/00H01F1/26
CPCH01F1/26B22F3/22B22F1/102B22F1/142
Inventor 刘坤马书旺杨剑梁秋实王健毛昌辉杨志民
Owner GRIMAT ENG INST CO LTD