Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multi-interface amorphous nanocrystalline electromagnetic shielding composite

A technology of amorphous nanocrystalline and composite materials, which is applied in the field of multi-interface amorphous nanocrystalline electromagnetic shielding composite materials and the preparation of the composite materials, can solve the problem of not being able to combine lightness and thinness, high shielding efficiency, high thermal stability, and high mechanical strength at the same time , It is difficult to realize the large-scale production of excellent multi-interface electromagnetic shielding materials, etc., to achieve the effects of excellent electromagnetic shielding performance, excellent electromagnetic shielding effect, and high magnetic conductivity

Pending Publication Date: 2020-06-23
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the materials and preparation methods of the above-mentioned patent applications still cannot simultaneously combine light and thin, high shielding effectiveness, high thermal stability, high mechanical strength and other comprehensive properties, so it is difficult to achieve large-scale production of excellent multi-interface electromagnetic shielding materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-interface amorphous nanocrystalline electromagnetic shielding composite
  • Multi-interface amorphous nanocrystalline electromagnetic shielding composite
  • Multi-interface amorphous nanocrystalline electromagnetic shielding composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] In this embodiment, the preferred magnetic permeability, coercive force, and saturation magnetic induction intensity are comprehensively excellent Fe-based amorphous alloy strips, and the specific composition is Fe 76 Si 13 B 8 Nb 2 Cu 1 .

[0079] The preparation method of the iron-based amorphous alloy strip is as follows:

[0080] (1) Prepare industrial-grade raw materials according to the required atomic percentage in the composition. The raw materials are shown in Table 1, and a master alloy ingot with uniform composition is prepared by using a vacuum induction furnace.

[0081] Table 1 raw material composition ratio

[0082] raw material Fe Si FeB FeNb Cu purity 98.4wt.% 99.6wt.% 99wt.% 99wt.% 99.95wt.% quality 22.73g 2.21g 2.97g 1.70g 0.39g

[0083] (2) The obtained master alloy ingot was ground with a grinding wheel to remove surface impurities, and then placed in a single-roll quenching device to obtain a t...

Embodiment 2

[0094] In this embodiment, the preferred Fe-based amorphous alloy strip with excellent saturation magnetic induction performance, the specific composition is Fe 84.3 Si 4 B 8 P 3 Cu 0.7 .

[0095] The preparation method of the iron-based amorphous alloy strip is as follows:

[0096] (1) Prepare industrial-grade raw materials according to the atomic percentage in the required composition. The raw materials are shown in Table 2, and a master alloy ingot with uniform composition is prepared by using a vacuum induction furnace.

[0097] Table 2 raw material composition ratio

[0098] raw material Fe Si FeB FeP Cu purity 98.4wt.% 99.6wt.% 99wt.% 99wt.% 99.95wt.% quality 23.50g 2.21g 2.75g 2.25g 0.39g

[0099] (2) The obtained master alloy ingot was ground with a grinding wheel to remove surface impurities, and then placed in a single-roll quenching device to obtain a thin iron-based amorphous alloy strip with a thickness of 17 ...

Embodiment 3

[0109] In this embodiment, the Fe-based amorphous alloy strip with excellent magnetic permeability is preferred, and the specific composition is Fe 77 Si 10 B 9 Nb 2 Cu 1 Al 1 .

[0110] The preparation method of the iron-based amorphous alloy strip is as follows:

[0111] (1) Prepare industrial-grade raw materials according to the required atomic percentage in the composition. The raw materials are shown in Table 3, and a master alloy ingot with uniform composition is prepared by using a vacuum induction furnace.

[0112] Table 3 raw material composition ratio

[0113]

[0114]

[0115] (2) The obtained master alloy ingot was ground with a grinding wheel to remove surface impurities, and then placed in a single-roll quenching device to obtain a thin iron-based amorphous alloy strip with a thickness range of 18 μm.

[0116] Get the composition as Fe 77 Si 10 B 9 Nb 2 Cu 1 Al 1 The iron-based amorphous thin strips were placed in SnCl with a concentration of 1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a multi-interface amorphous nanocrystalline electromagnetic shielding composite. The multi-interface amorphous nanocrystalline electromagnetic shielding composite comprises aniron-based amorphous nanocrystalline strip, a conductive layer, and a magnetic conductive layer, the conductive layer coats on the surface of the iron-based amorphous nanocrystalline strip, the magnetic conductive layer coats on the surface of the conductive layer, and the composite is provided with a multi-interface structure of the magnetic conductive layer / conductive layer / magnetic conductive layer / conductive layer / magnetic conductive layer. Through coating design, a nanocrystalline composite strip of a magnetic conductive, conductive, and soft magnetic multi-interface structure is built, in the preparing process, one-time forming is achieved, secondary machining is not needed, the prepared composite strip can be directly used, the excellent electromagnetic shielding effect is achieved,the multi-interface amorphous nanocrystalline electromagnetic shielding composite is ultra-thin, flexible, high in magnetic conductive and electric conductive property, good in soft magnetic property, excellent in electromagnetic shielding efficiency, resistant to heat and corrosion, and capable of being used in severe environments of high temperature, corrosion and the like.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic compatibility, and in particular relates to a multi-interface amorphous and nanocrystalline electromagnetic shielding composite material and a preparation method of the composite material. Background technique [0002] Electromagnetic shielding materials can effectively solve the electromagnetic interference and electromagnetic compatibility problems caused by electromagnetic waves. At present, the low performance of electromagnetic shielding is the main problem faced by domestic research in the field of electromagnetic shielding. Therefore, it is very necessary to study new "thin, light, wide and strong" electromagnetic shielding materials suitable for various complex environments and applications. [0003] At present, metal materials are the most widely used and commercialized electromagnetic shielding materials. The principle of metal shielding electromagnetic waves is that the metal ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C23C28/02C23C18/16C23C18/32C23C18/38C25D5/12H05K9/00
CPCC23C28/023C23C18/38C23C18/32C23C18/165C25D5/12H05K9/0088
Inventor 黎嘉威马泽南贺爱娜董亚强
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com