A kind of magnetic core powder and its preparation method and inductor
A magnetic core powder and powder technology, applied in the field of magnetic core powder and its preparation method and inductors, can solve the problems of difficulty in high frequency use, reduced magnetic permeability, low resistivity, etc., to achieve enhanced heat resistance, Effect of reducing loss, enhancing density and magnetic permeability
Active Publication Date: 2022-05-20
合泰盟方电子(深圳)股份有限公司
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In view of the related technologies mentioned above, the inventor believes that as the frequency of use of inductors develops towards the high frequency direction of MHz, although the existing magnetic cores are not easy to crack during the molding process, when used in inductors, their resistance The efficiency is low, and the loss is significant in the high-frequency environment, the magnetic permeability is significantly reduced, and it is difficult to meet the needs of high-frequency use
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
preparation example 1-6
[0043] The polymethyl methacrylate in Preparation Example 1-6 was selected from Shanghai Shansu Trading Co., Ltd., and the brand name was HS.
preparation example 1
[0044] Preparation Example 1: Mix 1kg of chromic anhydride, 0.1kg of ammonium borate, 0.5kg of polymethyl methacrylate, 0.4kg of cobalt sulfate, 0.3kg of sodium oxide, 0.1kg of boron oxide and 1kg of phosphorus pentoxide to prepare passivation agent.
preparation example 2
[0045] Preparation Example 2: Mix 2kg of chromic anhydride, 0.3kg of ammonium borate, 1kg of polymethyl methacrylate, 0.6kg of cobalt sulfate, 0.6kg of sodium oxide, 0.3kg of boron oxide and 1.5kg of phosphorus pentoxide to prepare passivation agent.
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
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Login to View More
Abstract
The application relates to the field of magnetic materials, and specifically discloses a magnetic core powder, a preparation method thereof, and an inductor. The magnetic core powder is made of raw materials including the following parts by weight: 94-97 parts by weight of soft magnetic metal powder, 0.01-0.1 parts by weight of binder, 0.1-0.15 parts by weight of film-forming agent, 0.2-0.25 parts by weight of passivator, insulation 0.2-0.3 parts by weight of the material, 0.5-2 parts by weight of the lubricant; the soft magnetic metal powder includes manganese-zinc ferrite and trace additives with a mass ratio of 1-1.3:0.01-0.05; the mass percentage of the trace additives is: 5‑10% coal gangue, 4‑8% tin disulfide, 5‑8% cobalt oxide, 20‑30% nickel, and the balance is aluminum. The magnetic core powder of the present application has the advantages of high binding force between the passivation film and the magnetic powder, not easy to crack and fall off, high initial magnetic permeability, and low loss in the high frequency range.
Description
technical field [0001] The application relates to the technical field of magnetic materials, and more specifically, it relates to a magnetic core powder, a preparation method thereof, and an inductor. Background technique [0002] Due to the development trend of electronic technology and market, the inductance components are developed towards the goal of high frequency, miniaturization and low power consumption. For the inductors used in it, the magnetic material for the preparation of the magnetic core needs to use a soft ferrite material with a higher resistivity than the metal magnetic material. Manganese zinc ferrite has high initial permeability and high saturation magnetic induction. Strength, low power consumption and other advantages have been widely used in the production of inductor core materials. [0003] The Chinese invention patent application document with the application number CN202010772214.6 discloses a manufacturing method of a manganese-zinc ferrite cor...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/37H01F27/255H01F27/34H01F41/02
CPCH01F1/37H01F27/255H01F27/34H01F41/0206H01F41/0246H01F2027/348
Inventor 张鸿彭美华
Owner 合泰盟方电子(深圳)股份有限公司