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Nanocrystal alloy, fabrication method of electromagnetic shielding sheet for wireless charging and electromagnetic shielding sheet

A nanocrystalline alloy, wireless charging technology, applied in the direction of magnetic field/electric field shielding, electrical components, etc., can solve the problem of low charging efficiency, achieve the effect of reasonable structure, reduce loss and improve charging efficiency

Active Publication Date: 2017-07-04
SHANGHAI LINEPRINTING MATERIALS CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0010] However, the charging efficiency of the soft magnetic material used in the electromagnetic shielding sheet for wireless charging is low; and the current shielding sheet structure cannot fully utilize the shielding performance of the soft magnetic material

Method used

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  • Nanocrystal alloy, fabrication method of electromagnetic shielding sheet for wireless charging and electromagnetic shielding sheet
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  • Nanocrystal alloy, fabrication method of electromagnetic shielding sheet for wireless charging and electromagnetic shielding sheet

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Embodiment Construction

[0048] The present invention will be described in detail below in conjunction with the accompanying drawings. The following examples do not limit the invention. Without departing from the spirit and scope of the inventive concept, changes and advantages that can be imagined by those skilled in the art are all included in the present invention.

[0049] Since wireless charging is the transmission of power, the performance requirements for the magnetic permeable sheet are generally high saturation magnetic induction, and it needs to have high magnetic permeability and low loss in the frequency range of use. According to these requirements, the present invention specially designs the following alloy composition for preparing the electromagnetic shielding sheet for wireless charging.

[0050] The alloy is a nanocrystalline alloy with high high-frequency magnetic permeability and low loss, and the preferred alloy satisfies the following formula.

[0051] Fe 100-d-e-f-g-z-m D. d...

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Abstract

The invention provides a nanocrystal alloy material, a fabrication method of an electromagnetic shielding sheet for wireless charging and the electromagnetic shielding sheet. The nanocrystal alloy material conforms to the following formula 1: Fe<100-d-e-f-g-z-m>D<d>E<e>Si<f>B<g>Z<z>M<m>, in the formula 1, D expresses at least one element selected from Cu and Au, E expresses at least one element selected from V, Nb, Ta, Mo, Mn and rare-earth elements, Z expresses at least one element selected from C, N and P, M express at least one element selected from Ni or Co, d, e, f, g, z and m respectively express contents of corresponding constituents and conform to the relation: 0.01<=d<=3at%, 0.01<=e<=5at%, 0<=f<=25at%, 0<=g<=20at%, 0<=z<=10at%, 0<=m<=40at%, 15<=(d+e+f+g+z)<=35at%, and at% expresses atomic percent.

Description

technical field [0001] The invention relates to the field of magnetic materials, in particular to a nanocrystalline alloy, a method for preparing an electromagnetic shielding sheet for wireless charging, and the electromagnetic shielding sheet. Background technique [0002] With the emergence and application of high-tech products, the electromagnetic radiation pollution it produces is the fourth largest environmental pollution after water pollution, air pollution and noise pollution. [0003] With the rapid development of science and technology and the wide application of electronic equipment, people's work and life are increasingly dependent on electronic equipment. We are used to charging with data cables, and we are often annoyed by too many cables and not long enough. It has also been imagined that one day all electronic devices do not need power cords, and can use wireless charging technology to charge freely anytime, anywhere. [0004] Wireless charging technology, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00C22C38/16C22C38/12C22C38/04C22C38/08C22C38/10
CPCH05K9/0081C22C38/001C22C38/002C22C38/005C22C38/04C22C38/08C22C38/10C22C38/105C22C38/12C22C38/16C22C2200/04
Inventor 李家洪周坤荣杨恺苏临萍吴长和杨兆国姚文峰
Owner SHANGHAI LINEPRINTING MATERIALS CO LTD
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