Nanocrystalline flexible sheet and preparation method and application thereof

A nano-chip and crystal-flexible technology, applied in the field of nano-crystalline flexible sheet and its preparation, can solve the problem that the charging efficiency of MnZn ferrite and NiZn ferrite is not ideal, cannot have high saturation magnetic induction at the same time, and cannot meet the requirements of use. To achieve the effect of promoting Fe enrichment and nucleation, improving the uniformity of the microstructure, and increasing the ability to form amorphous

Pending Publication Date: 2022-01-21
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the unsatisfactory charging efficiency of MnZn ferrite and NiZn ferrite used as wireless charging materials in the prior art, and the large size of the iron core, w

Method used

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  • Nanocrystalline flexible sheet and preparation method and application thereof
  • Nanocrystalline flexible sheet and preparation method and application thereof
  • Nanocrystalline flexible sheet and preparation method and application thereof

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[0054] The present invention also provides a method of preparing a nanocrystalline flexible sheet, in some embodiments, the relaxation treatment has a temperature of from 280 to 380 ° C, which may be any value of this, such as 300 ° C, 320 ° C, 350 ° C. , 360 ° C, etc., the present invention is not limited, further, when the relative treatment temperature is preferably 300-350 ° C, the obtained nanocrystalline flexible sheet is better, the relaxation treatment is 300-350 ° C. Any value between, for example, 310 ° C, 325 ° C, 335 ° C, 345 ° C, etc., the present invention is not limited thereto.

[0055] In some embodiments, the relaxation treatment is carried out at a magnetic field strength of 10-800 mT, and when the magnetic field strength is 500-800mt, the obtained nanocrystalline flexible sheet is better, and the magnetic field strength is between 500.00mm. Any value, such as 550 mt, 600 mt, 650 mt, 700mt, 750mt, etc., the present invention is not limited.

[0056] The technica...

Example Embodiment

[0057] Example 1

[0058] This embodiment provides a nanocrystalline flexible sheet comprising Fe, Cu, Si, B, Nb, Mo, Cu, Si, B, Nb, Mo and Y, atomic percentage of 76.1 at%, 0.9 at%, 13.5 at%, 7.5at, respectively. %, 1.2AT%, 0.6At% and 0.2 at%, ie molecular formula Fe 76.1 Cu 0.9 Si 13.5 B 7.5 NB 1.2 Mo 0.6 Y 0.2 .

[0059] The preparation method of the above nanocrystalline flexible sheet includes the steps of:

[0060] (1) Raw materials, copper raw materials, silicon feedstock, boron iron alloy ingot raw materials, molybdenum iron alloy ingot raw materials, and yttrium materials, in accordance with the percentage of the above-mentioned percentage, cooling at 1320 ° C for 45min, cooled, to obtain alloy ingots; then heating alloy ingots After the molten liquid state, the neutral nozzle is sprayed to the rotating copper bar to obtain a nano-crystal precursor (the process is fast quenching quenching); wherein the width of the nanocrystalline precursor is 60 mm, with a belt thickness...

Example Embodiment

[0063] Example 2

[0064] This embodiment provides a nanocrystalline flexible sheet comprising Fe, Cu, Si, B, NB, Mo, and HO, atomic percentage of 76.4 at%, 0.6 at%, 13At%, 8 at%, respectively, 1.2AT%, 0.5 at% and 0.1 at%, ie the molecular formula Fe 76.4 Cu 0.6 Si 13 B 8 NB 1.2 Mo 0.5 HO 0.1 .

[0065] The preparation method of the above nanocrystalline flexible sheet is in Example 1.

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Abstract

The invention belongs to the technical field of wireless charging material preparation, and particularly relates to a nanocrystalline flexible sheet and a preparation method and application thereof. The nanocrystalline flexible sheet comprises the following components: Fe, Cu, Si, B, Nb, Mo and C, and further comprises rare earth metal, and the rare earth metal is at least one of Y, Dy, Gd, Tb, Ho, Er and Tm. When the nanocrystalline flexible sheet is used in the field of wireless charging, the power and efficiency of wireless charging can be improved, and the nanocrystalline flexible sheet has the advantage of being small in size and is beneficial for electronic equipment to develop towards the direction of higher frequency, higher efficiency and miniaturization; and meanwhile, the nanocrystalline flexible sheet has the condition of replacing ferrite to serve as a wireless charging material under the high-frequency working condition, and has the advantages of being high in magnetic conductivity, saturation flux density, magnetic conductivity and charging efficiency, low in temperature rise, small in size and the like at the same time.

Description

technical field [0001] The invention belongs to the technical field of preparation of wireless charging materials, and in particular relates to a nanocrystalline flexible sheet and its preparation method and application. Background technique [0002] With the emergence of the energy crisis and the development of science and technology, the world is paying more and more attention to energy saving and low-carbon environmental protection. Due to the advantages of energy saving and no emission of pollutants, electric vehicles have become one of the key development industries in various countries. However, due to the limitations of battery capacity, charging mode, charging efficiency, and battery life, electric vehicles have limited mileage and long charging time, making them unsuitable for medium and long-distance sailing, which limits the overall promotion of electric vehicles. Efficient and practical charging technology is one of the key technologies to accelerate the develop...

Claims

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Application Information

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IPC IPC(8): H01F27/255H01F1/147H01F41/02H02J50/10
CPCH01F27/255H01F1/14766H01F41/0246H02J50/10Y02T10/70
Inventor 杨富尧刘洋陈新宋文乐冯砚厅贺爱娜高洁董亚强黎嘉威马光程灵何承绪
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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