CN102982942A - Fluorinated magnetic material - Google Patents
Fluorinated magnetic material Download PDFInfo
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- CN102982942A CN102982942A CN 201210475210 CN201210475210A CN102982942A CN 102982942 A CN102982942 A CN 102982942A CN 201210475210 CN201210475210 CN 201210475210 CN 201210475210 A CN201210475210 A CN 201210475210A CN 102982942 A CN102982942 A CN 102982942A
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Abstract
The invention relates to a fluorinated magnetic material, which is characterized in that the fluorinated magnetic material comprises the following components by atomic percent: 5.6 percent of neodymium, 3.6 percent of yttrium, 2.7 percent of fluorine, 0.5 percent of boron, 1.8 percent of titanium, 2.4 percent of cobalt and balance of iron. By adjusting the content of fluorine in the magnetic material and adding the light rare earth element yttrium in the material, the crystal structure in the material can be better controlled, and the Curie temperature and the coercive force of the magnetic material are effectively improved.
Description
Technical field
The invention belongs to field of magnetic material, refer to especially a kind of magnetic material of fluoridizing.
Background technology
Now use maximum permanent-magnet materials to be neodymium iron magnetic material and samarium iron magnetic material, but the Curie temperature of this two classes permanent magnetic material is not high, generally below 130 ℃, magnetic flux density is not high simultaneously, because there is defective in this two classes magnetic material and causes coercive force not high in crystallization process.
In the existing technology, generally be to improve coercive force by adding rare earth element, simultaneously in order to improve Curie temperature, generally need to add the heavy rare earth elements such as terbium, dysprosium, cause production cost to increase.In order to be implemented in Curie temperature and coercive force or the magnetic flux density that can improve these permanent magnetic materials in the situation of not using heavy rare earth element.Prior art proposes, and by add fluoride in Nd-Fe-B series magnetic material and samarium iron class magnetic material, fluorine improves magnetic properties by the growth that promotes metal grain in these magnetic materials.But only simply add fluoride by analyzing Curie temperature and the coercive force of finding effectively to improve these magnetic materials.
Summary of the invention
The objective of the invention is by improvements over the prior art, by adjusting the proportioning of each material, be implemented in and add Curie temperature and the coercive force that to realize improving magnetic material behind the fluoride.
The present invention is achieved by the following technical solutions:
A kind of magnetic material of fluoridizing, its composition comprise by atomic percent, 5.6% neodymium, 3.6% yttrium, 2.7% fluorine, 0.5% boron, 1.8% titanium, 2.4% cobalt and the iron of surplus.
As further improvement, the described magnetic material of fluoridizing, its composition also comprises 3% aluminium and copper by atomic percent.
The beneficial effect that the present invention compares with prior art is:
Reach adding light rare earth element yttrium in material by the content of adjusting the fluorine in the magnetic material, can better control the crystal structure in the material, effectively raise Curie temperature and the coercive force of magnetic material.
Embodiment
Below describe technical scheme of the present invention in detail by specific embodiment.
At first make the Nd-Fe-B series magnet, carry out vacuum melting take neodymium and iron atom ratio as 1: 15 mode, then add yttrium iron alloy, ferro-titanium, cobalt and borax by composition and melt again, and by calculating the iron that adds surplus, finally reaching neodymium and iron atom ratio is 1: 17; Then cool off in poly-cold mode, form the foil-like magnetic, then pulverize in hydrogen atmosphere, reach particle diameter and be lower than 100 microns flours, optimum efficiency is for being lower than 30 microns; Flour after will pulverizing adds and mixes with alcoholic solution behind the ammonium fluoride powder and be heated to 60 ℃, and in nitrogen atmosphere ball milling 100-120 hour again, making average grain diameter was the magnetic of fluoridizing of 0.5-2 micron.
The magnetic that makes is processed into the magnet post analysis, and Curie temperature reaches 500 ℃, and coercive force reaches 25.
Claims (2)
1. fluoridize magnetic material for one kind, it is characterized in that: its composition comprises by atomic percent, 5.6% neodymium, 3.6% yttrium, 2.7% fluorine, 0.5% boron, 1.8% titanium, 2.4% cobalt and the iron of surplus.
2. the magnetic material of fluoridizing according to claim 1, it is characterized in that: its composition also comprises 3% aluminium and copper by atomic percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210475210 CN102982942A (en) | 2012-11-19 | 2012-11-19 | Fluorinated magnetic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210475210 CN102982942A (en) | 2012-11-19 | 2012-11-19 | Fluorinated magnetic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102982942A true CN102982942A (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210475210 Pending CN102982942A (en) | 2012-11-19 | 2012-11-19 | Fluorinated magnetic material |
Country Status (1)
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| CN (1) | CN102982942A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111902898A (en) * | 2018-10-22 | 2020-11-06 | 株式会社Lg化学 | Method for producing sintered magnet and sintered magnet |
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2012
- 2012-11-19 CN CN 201210475210 patent/CN102982942A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111902898A (en) * | 2018-10-22 | 2020-11-06 | 株式会社Lg化学 | Method for producing sintered magnet and sintered magnet |
| US11978576B2 (en) | 2018-10-22 | 2024-05-07 | Lg Chem, Ltd. | Method for preparing sintered magnet and sintered magnet |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130320 |