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Amorphous soft magnetic alloy coatings and preparation method thereof

A technology of soft magnetic alloy and amorphous alloy, which is applied in metal material coating process, coating, magnetic material, etc., can solve the difficulty of preparing amorphous shielding layer, without considering the high magnetic permeability and high saturation of amorphous alloy materials Comprehensive performance of magnetic induction, inconvenient use, etc.

Active Publication Date: 2009-05-27
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The current technology of amorphous alloy electromagnetic shielding technology mainly has the following deficiencies: (1) amorphous soft magnetic alloy is mainly used in the form of strips, flakes, fibers or powders, and is compounded with other materials to form composite materials. The preparation process of shielding materials is relatively complicated and inconvenient to use; (2) the comprehensive performance of high magnetic permeability and high saturation magnetic induction of amorphous alloy materials is not considered; (3) there are difficulties in the preparation of large-area amorphous shielding layers

Method used

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  • Amorphous soft magnetic alloy coatings and preparation method thereof
  • Amorphous soft magnetic alloy coatings and preparation method thereof
  • Amorphous soft magnetic alloy coatings and preparation method thereof

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0034] In a preferred embodiment of the preparation method of the present invention, the alloy material smelted in the first step can be pulverized by atomization in a molten state to prepare alloy powder;

[0035] In another preferred embodiment of the preparation method of the present invention, the alloy material smelted in the first step can also be sprayed with alloy strips or scales in a molten state, and then the strips or scales are crushed to prepare alloy powder;

[0036] In a preferred embodiment of the preparation method of the present invention, the coating of the present invention is obtained by plasma spraying;

[0037] In another preferred embodiment of the preparation method of the present invention, the coating of the present invention is obtained by high velocity flame spraying.

[0038] Compared with prior art, the present invention has following advantage:

[0039] 1. Fe-Co based amorphous soft magnetic alloy material is used to prepare the coating, which...

Embodiment

[0043] According to No. 1 ingredient Fe 36 co 36 Si 4 B 20 Nb 4 and No. 2 component [(Fe 0.6 co 0.4 ) 0.75 Si 0.05 B 0.2 〕 96 Nb 4 After batching, the alloy is smelted, and powders are prepared by gas atomization and water atomization processes respectively, and 300-60 mesh powders are obtained after sieving. The coating is prepared by plasma spraying, the substrate is copper, and sandblasting is carried out before spraying. The plasma spraying process parameters are: arc voltage 60V, arc current 500A, main gas (Ar gas) flow: 70-80L / min, hydrogen flow: 15 ~20L / min, spray distance 100~120mm, powder feeding speed 50~70g / min. Table 1 is the implementation process and performance.

[0044] Table 1 Example process and performance

[0045] Preface

No

Powder

prepare

Powder size

(mesh)

Spray side

Law

high frequency shielding

efficiency

(dB) DC magnetic screen

Masking efficiency

(dB) Micro Vickers Hardness

De...

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Abstract

The present invention relates to an amorphous soft magnetic alloy coating and the preparation method thereof, particularly relates to Fe-Co base amorphous soft magnetic alloy coating, characterized in that: (1) the sum of atom percentage content of Fe and Co is no less than 70&; (2) basically the coating is in amorphous structure. The invention also relates to the usage of the coating and the preparation method thereof.

Description

technical field [0001] The invention belongs to the field of electromagnetic shielding, and in particular relates to an Fe-Co-based amorphous soft magnetic alloy coating and a preparation method thereof. The coating is used as an electromagnetic shielding coating, an abrasion-resistant coating and a corrosion-resistant coating. Background technique [0002] With the rapid development and wide application of radio, television, communication, navigation, radar, telemetering and remote control, and computers, human beings have created huge material wealth and provided great convenience for life. However, while enjoying the benefits brought by these new technologies, human society is facing new environmental pollution—electromagnetic pollution. Since the progress of these technologies is inseparable from the use of electromagnetic energy, the electromagnetic environment has become increasingly complex, and electromagnetic pollution has become a major public hazard in today's soc...

Claims

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Application Information

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IPC IPC(8): H01F1/153C22C45/00C23C4/08H05K9/00C23C4/06C23C4/134
Inventor 赵新彬倪晓俊卢志超吴嘉伟薄希辉郭金花李德仁孙克周少雄
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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