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Strontium ferrite magnetic material and preparation method thereof

A strontium ferrite magnetic powder and magnetic material technology, which is applied in the field of preparing the strontium ferrite magnetic material, can solve the problems of high cost, low cost performance, and high product price, so as to improve remanence, reduce product cost, and improve The effect of product yield

Inactive Publication Date: 2013-04-03
广东正民高新磁电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the permanent magnet properties of domestic ferrite are still mostly at the level of Y30H-1 or Y33. Although the performance of foreign products is higher than that of domestic products, because they use high-quality iron red as the main raw material, the cost is high and the product price is high. , compared with other permanent magnet products, the cost performance is not outstanding
So far, there is still no good solution to use ordinary steel scale as the main raw material to prepare high-end products such as Y28H-2, Y30H-2 and Y38 to achieve high performance and low cost.

Method used

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  • Strontium ferrite magnetic material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] To prepare the strontium ferrite magnetic material of the present invention, follow the steps below:

[0028] A. Preparation of alcoholic camphor solution:

[0029] With a clean barrel, alcohol and camphor are mixed together in a ratio of 75%: 25% by weight, and stirred evenly, so that camphor is completely dissolved in alcohol, and sealed for use;

[0030] B, preparation of strontium ferrite magnetic powder: iron oxide, strontium oxide, silicon oxide, barium oxide, calcium oxide and other materials by weight percentage are 80%: 13.5%: 3%: 1.5%: 2% in a clean mixer mix evenly;

[0031] C. Add an appropriate amount of neodymium oxide material in the above-mentioned strontium ferrite magnetic powder according to the ratio of strontium ferrite magnetic powder: neodymium oxide=80%: 10% (weight percentage), and stir evenly;

[0032] D. Add the alcohol camphor solution to the material in step C according to the ratio of strontium ferrite magnetic powder: alcohol camphor sol...

Embodiment 2

[0034] To prepare the strontium ferrite magnetic material of the present invention, follow the steps below:

[0035] A. Preparation of alcoholic camphor solution:

[0036] Mix together alcohol and camphor in a ratio of 85%: 15% by weight with a clean bucket, and stir evenly, so that camphor is completely dissolved in alcohol, and sealed for use;

[0037] B. Preparation of strontium ferrite magnetic powder: put iron oxide, strontium oxide, silicon oxide, barium oxide, calcium oxide and other materials in a clean mixer at a ratio of 90% by weight: 7.5%: 1%: 0.5%: 1%. mix evenly;

[0038] C. Add an appropriate amount of neodymium oxide material in the above-mentioned strontium ferrite magnetic powder according to the ratio of strontium ferrite magnetic powder: neodymium oxide=92%: 3% (weight percentage), and stir evenly;

[0039] D. Add the alcohol camphor solution to the material in step C according to the ratio of strontium ferrite magnetic powder: alcohol camphor solution = ...

Embodiment 3

[0041] To prepare the strontium ferrite magnetic material of the present invention, follow the steps below:

[0042] A. Preparation of alcoholic camphor solution:

[0043] With a clean barrel, alcohol and camphor are mixed together in a ratio of 78%: 22% by weight, and stirred evenly, so that camphor is completely dissolved in alcohol, and sealed for use;

[0044] B. Preparation of strontium ferrite magnetic powder: put iron oxide, strontium oxide, silicon oxide, barium oxide, calcium oxide and other materials in a clean mixer at a ratio of 85%: 10.5%: 2%: 1%: 1.5% by weight mix evenly;

[0045] C. Add an appropriate amount of neodymium oxide material in the above-mentioned strontium ferrite magnetic powder according to the ratio of strontium ferrite magnetic powder: neodymium oxide=85%: 7% (weight percentage), and stir evenly;

[0046] D. Add the alcohol camphor solution to the material in step C according to the ratio of strontium ferrite magnetic powder: alcohol camphor s...

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Abstract

The invention discloses a strontium ferrite magnetic material and a preparation method thereof. The strontium ferrite magnetic material comprises the following components in percentage by weight: 80-92% of strontium ferrite magnetic powder, 3-10% of neodymium oxide and 5-10% of alcohol and camphor solution. The preparation method comprises the following steps of: A. preparing the alcohol and camphor solution, mixing alcohol and camphor according to a certain proportion in a clean barrel and stirring uniformly to ensure that the camphor is completely dissolved in the alcohol, and sealing for later use; B. preparing the strontium ferrite magnetic powder: uniformly mixing materials such as ferric oxide, strontium oxide, silicon oxide, barium oxide, calcium oxide and the like according to a certain proportion in a clean stirrer; C. adding a proper amount of neodymium oxide materials according to a certain proportion in the strontium ferrite magnetic powder and uniformly stirring; and D. adding the alcohol and camphor solution according to a certain proportion in the material obtained in the step C, uniformly stirring and drying. The invention aims to provide the strontium ferrite magnetic material which has higher residual magnetism capability and coercivity and lower production cost and the preparation method thereof.

Description

technical field [0001] The invention relates to a strontium ferrite magnetic material, and also relates to a method for preparing the strontium ferrite magnetic material. Background technique [0002] Magnetic materials are the main supporting products of various electronic products, and are widely used in various fields such as home appliances, scientific research, industry, communication, aviation, automation, etc. Among them, ferrite permanent magnet materials are characterized by high cost performance and excellent chemical stability. The annual output growth is stable at 10-20%. However, the existing ferrite permanent magnet materials have weak remanence and coercive force, and the product strength is relatively small. [0003] With the miniaturization, high-density and high-definition requirements of electronic products, micro-special motors are required to be small, light and thin, and realize miniaturization and high-speed to meet the needs of the development of ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/26C04B35/622
Inventor 孙澄清
Owner 广东正民高新磁电有限公司