CN102167574B - Strontium ferrite magnetic material and preparation method thereof - Google Patents
Strontium ferrite magnetic material and preparation method thereof Download PDFInfo
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- CN102167574B CN102167574B CN 201110001566 CN201110001566A CN102167574B CN 102167574 B CN102167574 B CN 102167574B CN 201110001566 CN201110001566 CN 201110001566 CN 201110001566 A CN201110001566 A CN 201110001566A CN 102167574 B CN102167574 B CN 102167574B
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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
The present invention relates to a kind of Sr-ferrite magnetic material, the invention still further relates to a kind of method for preparing this Sr-ferrite magnetic material.
Background technology
Magneticsubstance is the main auxiliary products of various electronic products, be widely used in the every field such as household electrical appliances, scientific research, industry, communication, aviation, automatization, wherein ferrite permanent-magnet materials is with its higher cost performance and good chemical stability, and the annual production increment is stabilized in 10-20%.But its remanent magnetism ability of existing ferrite permanent-magnet materials and coercive force all a little less than, product strength is less.
Along with the small-sized high density collection of electronic product and the requirement of high-resolution, require small and special electric machine little, light, thin, realize that miniaturization and high speed satisfy the needs of electronic product development, this requires higher magnetic property undoubtedly.Ferrite magnetic material also only takes off take low-and-medium-grade products as main situation, and keeps its cheap starting material and lower production cost, could satisfy the needs of production development and keep superiority of effectiveness.But present domestic ferrite permanent-magnet performance also mostly be in Y30H-1 or Y33 partially in and following level, although and the domestic height of external product Performance Ratio, adopting the high-quality iron oxide red because of them is main raw material, cost is high, product price is high, and to compare cost performance not too outstanding with other permanent magnet products.So far, adopting the common iron scale of steel mill is main raw material, and the high-grade products such as preparation Y28H-2, Y30H-2 and Y38 to realize high-performance and low cost, are gone back the good terms of settlement of neither one.
Summary of the invention
The objective of the invention is in order to overcome weak point of the prior art, provide a kind of remanent magnetism ability and coercive force relatively high, the Sr-ferrite magnetic material that production cost is relatively low;
Another object of the present invention provides a kind of method for preparing above-mentioned Sr-ferrite magnetic material.
In order to achieve the above object, the present invention adopts following scheme:
A kind of Sr-ferrite magnetic material is characterized in that composed of the following components by weight percentage:
Strontium ferrite magnetic powder 80～92%
Neodymium trioxide 3～10%
Alcohol camphor solution 5～10%.
Aforesaid a kind of Sr-ferrite magnetic material is characterized in that described strontium ferrite magnetic powder is composed of the following components by weight percentage:
Ferric oxide 80～90%
Strontium oxide 7～15%
Silicon oxide 1～3%
Barium oxide 0.5～1.5%
Calcium oxide 1～2%.
Aforesaid a kind of Sr-ferrite magnetic material is characterized in that described alcohol camphor solution is comprised of 75～85% alcohol and 15～25% camphors by weight percentage.
Preparation is the method for any Sr-ferrite magnetic material as mentioned above, it is characterized in that may further comprise the steps:
A, preparation alcohol camphor solution: with a clean bucket alcohol and camphor are mixed in proportion, and stir, camphor is dissolved in the alcohol fully, seal stand-by;
B, preparation strontium ferrite magnetic powder: the stirrer for mixing clean is even in proportion with materials such as ferric oxide, strontium oxide, silicon oxide, barium oxide, calcium oxide;
C, in above-mentioned strontium ferrite magnetic powder, add in proportion an amount of Neodymium trioxide material, and stir;
D, alcohol camphor solution is added material among the step C in proportion, dry up after stirring and get final product.
In sum, beneficial effect of the present invention:
Adopt strontium ferrite magnetic powder and Neodymium trioxide among the present invention, alcohol camphor solution cooperates, the product of producing can improve remanent magnetism (Br) ability of product greatly, Effective Raise the coercive force of product (Hcb), can increase simultaneously the intensity of product, strong raising the finished product rate, reduced product cost, increase economic efficiency.
Embodiment
Below in conjunction with embodiment the present invention is described further:
Embodiment 1
Prepare Sr-ferrite magnetic material of the present invention, according to the following steps:
A, preparation alcohol camphor solution:
Be that 75%: 25% ratio mixes with a clean bucket by weight percentage with alcohol and camphor, and stir, camphor is dissolved in the alcohol fully, seal stand-by;
B, preparation strontium ferrite magnetic powder: be 80%: 13.5%: 3% by weight percentage with materials such as ferric oxide, strontium oxide, silicon oxide, barium oxide, calcium oxide: 1.5%: 2% ratio is even in clean stirrer for mixing;
C, in above-mentioned strontium ferrite magnetic powder in strontium ferrite magnetic powder: the ratio of Neodymium trioxide=80%: 10% (weight percent) adds an amount of Neodymium trioxide material, and stirs;
D, in strontium ferrite magnetic powder: the ratio of alcohol camphor solution=80%: 10% (weight percent) adds material among the step C with alcohol camphor solution, dries up after stirring to get final product.
Embodiment 2
Prepare Sr-ferrite magnetic material of the present invention, according to the following steps:
A, preparation alcohol camphor solution:
Be that 85%: 15% ratio mixes with a clean bucket by weight percentage with alcohol and camphor, and stir, camphor is dissolved in the alcohol fully, seal stand-by;
B, preparation strontium ferrite magnetic powder: be 90%: 7.5%: 1% by weight percentage with materials such as ferric oxide, strontium oxide, silicon oxide, barium oxide, calcium oxide: 0.5%: 1% ratio is even in clean stirrer for mixing;
C, in above-mentioned strontium ferrite magnetic powder in strontium ferrite magnetic powder: the ratio of Neodymium trioxide=92%: 3% (weight percent) adds an amount of Neodymium trioxide material, and stirs;
D, in strontium ferrite magnetic powder: the ratio of alcohol camphor solution=92%: 5% (weight percent) adds material among the step C with alcohol camphor solution, dries up after stirring to get final product.
Embodiment 3
Prepare Sr-ferrite magnetic material of the present invention, according to the following steps:
A, preparation alcohol camphor solution:
Be that 78%: 22% ratio mixes with a clean bucket by weight percentage with alcohol and camphor, and stir, camphor is dissolved in the alcohol fully, seal stand-by;
B, preparation strontium ferrite magnetic powder: be 85%: 10.5%: 2% by weight percentage with materials such as ferric oxide, strontium oxide, silicon oxide, barium oxide, calcium oxide: 1%: 1.5% ratio is even in clean stirrer for mixing;
C, in above-mentioned strontium ferrite magnetic powder in strontium ferrite magnetic powder: the ratio of Neodymium trioxide=85%: 7% (weight percent) adds an amount of Neodymium trioxide material, and stirs;
D, in strontium ferrite magnetic powder: the ratio of alcohol camphor solution=85%: 8% (weight percent) adds material among the step C with alcohol camphor solution, dries up after stirring to get final product.
Embodiment 4
Prepare Sr-ferrite magnetic material of the present invention, according to the following steps:
A, preparation alcohol camphor solution:
Be that 83%: 17% ratio mixes with a clean bucket by weight percentage with alcohol and camphor, and stir, camphor is dissolved in the alcohol fully, seal stand-by;
B, preparation strontium ferrite magnetic powder: be 83%: 13.5%: 1.5% by weight percentage with materials such as ferric oxide, strontium oxide, silicon oxide, barium oxide, calcium oxide: 0.8%: 1.2% ratio is even in clean stirrer for mixing;
C, in above-mentioned strontium ferrite magnetic powder in strontium ferrite magnetic powder: the ratio of Neodymium trioxide=90%: 5% (weight percent) adds an amount of Neodymium trioxide material, and stirs;
D, in strontium ferrite magnetic powder: the ratio of alcohol camphor solution=90%: 5% (weight percent) adds material among the step C with alcohol camphor solution, dries up after stirring to get final product.
Embodiment 5
Prepare Sr-ferrite magnetic material of the present invention, according to the following steps:
A, preparation alcohol camphor solution:
Be that 80%: 20% ratio mixes with a clean bucket by weight percentage with alcohol and camphor, and stir, camphor is dissolved in the alcohol fully, seal stand-by;
B, preparation strontium ferrite magnetic powder: be 88%: 9%: 1% by weight percentage with materials such as ferric oxide, strontium oxide, silicon oxide, barium oxide, calcium oxide: 1%: 1% ratio is even in clean stirrer for mixing;
C, in above-mentioned strontium ferrite magnetic powder in strontium ferrite magnetic powder: the ratio of Neodymium trioxide=88%: 4% (weight percent) adds an amount of Neodymium trioxide material, and stirs;
D, in strontium ferrite magnetic powder: the ratio of alcohol camphor solution=88%: 8% (weight percent) adds material among the step C with alcohol camphor solution, dries up after stirring to get final product.
Claims (1)
1. the preparation method of a Sr-ferrite magnetic material is characterized in that described Sr-ferrite magnetic material is composed of the following components by weight percentage:
Strontium ferrite magnetic powder 80～92%
Neodymium trioxide 3～10%
Alcohol camphor solution 5～10%,
Wherein said strontium ferrite magnetic powder is composed of the following components by weight percentage:
Wherein said alcohol camphor solution is comprised of 75～85% alcohol and 15～25% camphors by weight percentage,
The preparation method of described Sr-ferrite magnetic material may further comprise the steps:
A, preparation alcohol camphor solution: with a clean bucket alcohol and camphor are mixed in proportion, and stir, camphor is dissolved in the alcohol fully, seal stand-by;
B, preparation strontium ferrite magnetic powder: the stirrer for mixing clean is even in proportion with ferric oxide, strontium oxide, silicon oxide, barium oxide, calcium oxide;
C, in above-mentioned strontium ferrite magnetic powder, add in proportion an amount of Neodymium trioxide material, and stir;
D, alcohol camphor solution is added material among the step C in proportion, dry up after stirring and get final product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110001566 CN102167574B (en) | 2011-01-06 | 2011-01-06 | Strontium ferrite magnetic material and preparation method thereof |
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| CN 201110001566 CN102167574B (en) | 2011-01-06 | 2011-01-06 | Strontium ferrite magnetic material and preparation method thereof |
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| CN102167574A CN102167574A (en) | 2011-08-31 |
| CN102167574B true CN102167574B (en) | 2013-04-03 |
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