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A preparation method of a magnetic material for a rare earth-based semiconductor

A technology of magnetic materials and semiconductors, applied in the fields of magnetic materials, magnetic objects, inorganic materials, etc., can solve problems such as restricting the application and development of new materials, insufficient magnetic flux density, and insufficient recovery permeability at the highest working temperature, and achieve practicality. The effect of strong, easy to obtain raw materials and simple process

Inactive Publication Date: 2018-11-27
吴江市聚盈电子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current common magnetic materials for rare earth-based semiconductors often have insufficient indicators such as magnetic flux density, maximum operating temperature, and recovery permeability, which seriously restricts the further application and development of this new type of material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) A magnetic material mixture composed of 4 parts of rare earth, 5 parts of manganese trioxide, 2 parts of manganous anhydride, and 7 parts of manganite, and 3 parts of calcium carbide, 6 parts of silicon dioxide, 2 parts of aluminum oxide, and copper sulfate 1 part, 1 part of boron nitride, 3 parts of montmorillonite, and 2 parts of carbon black are mixed uniformly, respectively, and added to a wet ball mill to grind for 10 hours, and the obtained magnetic powder and nonmagnetic powder mixture are respectively passed Screening, wherein the parameters of the wet ball mill are that the ball-to-material ratio is 98:1, the ball milling medium is ethylene glycol, and the ball milling speed is 1500 rpm;

[0023] (2) The magnetic powder mixture and non-magnetic powder mixture obtained in step (1) are subjected to freeze-drying treatment respectively, and the obtained magnetic product and non-magnetic product are stored at -80°C for future use, wherein the freeze-drying param...

Embodiment 2

[0029] (1) A magnetic material mixture composed of 6 parts of rare earth, 7 parts of manganese trioxide, 3 parts of manganous anhydride, and 9 parts of manganite, and 4 parts of calcium carbide, 8 parts of silicon dioxide, 3 parts of aluminum oxide, and copper sulfate 1 part, 3 parts of boron nitride, 4 parts of montmorillonite, and 3 parts of carbon black are mixed uniformly, respectively added to a wet ball mill and ground for 15 hours, and the obtained magnetic powder and nonmagnetic powder mixture are respectively passed Screening, wherein the parameters of the wet ball mill are that the ball-to-material ratio is 98:1, the ball milling medium is ethylene glycol, and the ball milling speed is 1500 rpm;

[0030] (2) The magnetic powder mixture and non-magnetic powder mixture obtained in step (1) are subjected to freeze-drying treatment respectively, and the obtained magnetic product and non-magnetic product are stored at -80°C for future use, wherein the freeze-drying paramet...

Embodiment 3

[0036] (1) A magnetic material mixture composed of 8 parts of rare earth, 9 parts of manganese trioxide, 4 parts of manganous anhydride, and 13 parts of manganite, and 6 parts of calcium carbide, 10 parts of silicon dioxide, 4 parts of aluminum oxide, and copper sulfate 2 parts of boron nitride, 5 parts of boron nitride, 6 parts of montmorillonite, and 3 parts of carbon black are mixed evenly, respectively, and added to a wet ball mill for grinding for 20 hours, and the obtained magnetic powder and nonmagnetic powder mixture are respectively passed Screening, wherein the parameters of the wet ball mill are that the ball-to-material ratio is 98:1, the ball milling medium is ethylene glycol, and the ball milling speed is 1500 rpm;

[0037] (2) The magnetic powder mixture and non-magnetic powder mixture obtained in step (1) are subjected to freeze-drying treatment respectively, and the obtained magnetic product and non-magnetic product are stored at -80°C for future use, wherein t...

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PUM

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Abstract

The invention discloses a preparation method of a magnetic material for a rare earth-based semiconductor, the process comprises the following steps of: wet ball milling and freeze drying the magneticmaterial composed of rare earth, manganese trioxide, manganese dioxide, manganic anhydride and manganite, and the non-magnetic material composed of calcium carbide, silicon dioxide, aluminum oxide, copper sulfate, boron nitride, montmorillonite and carbon black, respectively, and then adding p-aminophenol hydrochloride, 3 [[(4, 5 Dihydride 1H Imidazole 2 Methyl) methyl] (4 A magnetic material for a rare earth-based semiconductor is prepare from phenol, p-methoxyphenethylamine, tetraethylammonium chloride, palmitic acid, stabilizer reaction, and other raw material through gradient melting, twin-screw extrusion, casting, rapid cooling of liquid nitrogen, freeze solidification, nitrogen blow drying, high-temperature steam was, and natural air drying. The magnetic materials for rare earth-based semiconductors have good electromagnetic properties, high magnetic energy product and saturated magnetic flux density, which can meet various needs in the industry.

Description

technical field [0001] The invention relates to the technical field of new electronic materials, in particular to a preparation method of magnetic materials for rare earth-based semiconductors. Background technique [0002] China is the first country in the world to discover the phenomenon of material magnetism and apply magnetic materials. As early as the Warring States Period, there were records about natural magnetic materials (such as magnetite). The method of manufacturing artificial permanent magnet materials was invented in the 11th century. In 1086, "Mengxi Bi Tan" recorded the making and use of compass. From 1099 to 1102, there were records of compass used in navigation, and the phenomenon of geomagnetic declination was also discovered. In modern times, the development of the electric power industry has promoted the development of metal magnetic materials ─ ─ silicon steel sheet (Si-Fe alloy). The permanent magnet metal developed from carbon steel in the 19th ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/40H01F41/00
CPCH01F1/401H01F41/00
Inventor 吴付荣
Owner 吴江市聚盈电子材料科技有限公司