CN112142458A - Preparation method of high-density manganese-zinc ferrite - Google Patents
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Abstract
The application discloses a preparation method of high-density manganese-zinc ferrite, which sequentially comprises the following steps: 1) 50-55% of Fe by weight percentage2O38-10% of ZnO, 35-40% of MnO and 2-4% of CoO powder, and adding 360ppm of CaCO3、220ppm SiO2、480ppm Cr2O3、530ppm Nb2O5(ii) a 2) Performing primary ball milling at the rotation speed of 1100-1300rpm for 45 min; 3) primary sintering is carried out, the temperature is controlled to be 880-920 ℃, the time is 4 hours, and the temperature is kept for 1 hour to obtain a block body; 4) pulverizing the block into granulesThe diameter is less than 40 μm; 5) performing secondary ball milling in an argon atmosphere at the rotation speed of 1800 plus 2500rpm for 80 min; 6) and (3) secondary sintering, namely performing hot-pressing sintering under the vacuum condition, wherein the pressure is 120MPa, the temperature is controlled to be 1600-1650 ℃, the time is 8-10 hours, and the temperature is kept for 2 hours to obtain the product. The invention optimizes the hot-pressing sintering process, so that the compactness of the finished product is greatly improved after the hot-pressing sintering treatment, the crystal grain structure is improved, and the magnetic property and the mechanical property are improved.
Description
Technical Field
The invention relates to a magnetic material, in particular to a preparation method of high-density manganese-zinc ferrite.
Background
With the rapid development of inverter transformers for high-performance computers, household electrical appliances, LCD (LED) displays, the transformer core is required to further reduce power consumption, and particularly, the LED and LCD transformers are required to maintain high power, meet the performance requirements of low loss and high efficiency, and maintain temperature under different current superposition states. The transformer has wide application range and covers household appliances, vehicles and large-scale industrial equipment; which is increasingly demanding on ferrite cores.
Disclosure of Invention
The invention aims to provide a preparation method of high-density manganese-zinc ferrite.
In order to achieve the purpose, the invention provides the following technical scheme:
the embodiment of the application discloses a preparation method of a high-density manganese-zinc ferrite, which sequentially comprises the following steps:
1) 50-55% of Fe by weight percentage2O38-10% of ZnO, 35-40% of MnO and 2-4% of CoO powder, and adding 360ppm of CaCO3、220ppm SiO2、480ppm Cr2O3、530ppm Nb2O5；
2) Performing primary ball milling at the rotation speed of 1100-1300rpm for 45 min;
3) primary sintering is carried out, the temperature is controlled to be 880-920 ℃, the time is 4 hours, and the temperature is kept for 1 hour to obtain a block body;
4) pulverizing the block to a particle size of less than 40 μm;
5) performing secondary ball milling in an argon atmosphere at the rotation speed of 1800 plus 2500rpm for 80 min;
6) and (3) secondary sintering, namely performing hot-pressing sintering under the vacuum condition, wherein the pressure is 120MPa, the temperature is controlled to be 1600-1650 ℃, the time is 8-10 hours, and the temperature is kept for 2 hours to obtain the product.
Preferably, in the above method for preparing a high density manganese zinc ferrite, each component is 52% Fe in step S12O3、8% ZnO、38% MnO、2% CoO。
Preferably, in the above method for preparing a high density manganese zinc ferrite, the rotation speed is 1300rpm in step S2.
Preferably, in the above method for preparing a high density manganese zinc ferrite, the temperature is 910 ℃ in step S3.
Preferably, in the above method for preparing a high density manganese zinc ferrite, the rotation speed is 2200 rpm in step S5.
Preferably, in the above method for preparing a high density manganese zinc ferrite, the temperature is 1640 ℃ for 10 hours in step S6.
The invention has the advantages that the hot-pressing sintering process is optimized, the compactness of the finished product is greatly improved after the hot-pressing sintering treatment, the crystal grain structure is improved, and the magnetic property and the mechanical property are improved.
Detailed Description
The preparation method of the high-density manganese-zinc ferrite will be described with reference to the following examples.
The preparation method is the same: the method comprises the following steps:
1) 50-55% of Fe by weight percentage2O38-10% of ZnO, 35-40% of MnO and 2-4% of CoO powder, and adding 360ppm of CaCO3、220ppm SiO2、480ppm Cr2O3、530ppm Nb2O5；
2) Performing primary ball milling at the rotation speed of 1100-1300rpm for 45 min;
3) primary sintering is carried out, the temperature is controlled to be 880-920 ℃, the time is 4 hours, and the temperature is kept for 1 hour to obtain a block body;
4) pulverizing the block to a particle size of less than 40 μm;
5) performing secondary ball milling in an argon atmosphere at the rotation speed of 1800 plus 2500rpm for 80 min;
6) and (3) secondary sintering, namely performing hot-pressing sintering under the vacuum condition, wherein the pressure is 120MPa, the temperature is controlled to be 1600-1650 ℃, the time is 8-10 hours, and the temperature is kept for 2 hours to obtain the product.
In example 1, in step S1, each component was 52% Fe2O38% ZnO, 38% MnO and 2% CoO. In step S2, the rotation speed was 1300 rpm. In step S3, the temperature is 910 ℃. In step S5, the rotation speed is 2200 rpm. In step S6, the temperature was 1640 ℃ and the time was 10 hours.
In example 2, in step S1, each component was 50% Fe2O38% ZnO, 38% MnO and 4% CoO. In step S2, the rotation speed was 1300 rpm. In step S3, the temperature is 910 ℃. In step S5, the rotation speed is 2200 rpm. In step S6, the temperature was 1640 ℃ and the time was 10 hours.
In example 3, in step S1, each component was 52% Fe2O310% ZnO, 36% MnO and 2% CoO. In step S2, the rotation speed was 1300 rpm. In step S3, the temperature is 910 ℃. In step S5, the rotation speed is 2200 rpm. In step S6, the temperature was 1640 ℃ and the time was 10 hours.
In example 4, in step S1, each component was 52% Fe2O38% ZnO, 38% MnO and 2% CoO. In step S2, the rotation speed is 1200 rpm. In step S3, the temperature is 910 ℃. In step S5, the rotation speed is 2200 rpm. In step S6, the temperature was 1640 ℃ and the time was 10 hours.
In example 5, in step S1, each component was 52% Fe2O38% ZnO, 38% MnO and 2% CoO. In step S2, the rotation speed is 1100 rpm. In step S3, the temperature is 910 ℃. In step S5, the rotation speed is 2200 rpm. In step S6, the temperature was 1640 ℃ and the time was 10 hours.
In example 6, in step S1, each component was 52% Fe2O38% ZnO, 38% MnO and 2% CoO. In step S2, the rotation speed was 1300 rpm. In step S3, the temperature is 920 ℃. In step S5, the rotation speed is 2200 rpm. In step S6, the temperature was 1640 ℃ and the time was 10 hours.
In example 7, in step S1, each component was 52% Fe2O38% ZnO, 38% MnO and 2% CoO. In step S2, the rotation speed was 1300 rpm. In step S3The temperature was 900 ℃. In step S5, the rotation speed is 2200 rpm. In step S6, the temperature was 1640 ℃ and the time was 10 hours.
In example 8, in step S1, each component was 52% Fe2O38% ZnO, 38% MnO and 2% CoO. In step S2, the rotation speed was 1300 rpm. In step S3, the temperature is 910 ℃. In step S5, the rotation speed is 2500 rpm. In step S6, the temperature was 1640 ℃ and the time was 10 hours.
In example 9, in step S1, each component was 52% Fe2O38% ZnO, 38% MnO and 2% CoO. In step S2, the rotation speed was 1300 rpm. In step S3, the temperature is 910 ℃. In step S5, the rotation speed is 2000 rpm. In step S6, the temperature was 1640 ℃ and the time was 10 hours.
In example 10, in step S1, each component was 52% Fe2O38% ZnO, 38% MnO and 2% CoO. In step S2, the rotation speed was 1300 rpm. In step S3, the temperature is 910 ℃. In step S5, the rotation speed is 2200 rpm. In step S6, the temperature was 1650 ℃ and the time was 10 hours.
In example 11, in step S1, each component was 52% Fe2O38% ZnO, 38% MnO and 2% CoO. In step S2, the rotation speed was 1300 rpm. In step S3, the temperature is 910 ℃. In step S5, the rotation speed is 2200 rpm. In step S6, the temperature is 1600 ℃ and the time is 10 hours.
In comparison with examples 1 to 11, the flexural strength and fracture toughness of examples 2 to 11 were 80 to 88% of those of example 1, based on example 1.
The present embodiments are to be considered as illustrative and not restrictive, and the scope of the patent is to be determined by the appended claims.
Claims (6)
1. The preparation method of the high-density manganese-zinc ferrite is characterized by sequentially comprising the following steps of:
1) 50-55% of Fe by weight percentage2O3、8-10% ZnO、35-40% MnMixing O and 2-4% CoO powder, adding 360ppm CaCO3、220ppm SiO2、480ppm Cr2O3、530ppm Nb2O5；
2) Performing primary ball milling at the rotation speed of 1100-1300rpm for 45 min;
3) primary sintering is carried out, the temperature is controlled to be 880-920 ℃, the time is 4 hours, and the temperature is kept for 1 hour to obtain a block body;
4) pulverizing the block to a particle size of less than 40 μm;
5) performing secondary ball milling in an argon atmosphere at the rotation speed of 1800 plus 2500rpm for 80 min;
6) and (3) secondary sintering, namely performing hot-pressing sintering under the vacuum condition, wherein the pressure is 120MPa, the temperature is controlled to be 1600-1650 ℃, the time is 8-10 hours, and the temperature is kept for 2 hours to obtain the product.
2. The method of claim 1, wherein each component in the step S1 is 52% Fe2O3、8% ZnO、38% MnO、2% CoO。
3. The method of claim 1, wherein in step S2, the rotation speed is 1300 rpm.
4. The method of claim 1, wherein the temperature in step S3 is 910 ℃.
5. The method of claim 1, wherein the rotation speed of step S5 is 2200 rpm.
6. The method of claim 1, wherein the temperature is 1640 ℃ and the time is 10 hours in step S6.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114195500A (en) * | 2022-02-18 | 2022-03-18 | 天通控股股份有限公司 | Wide-temperature high-frequency high-magnetic-flux-density manganese-zinc soft magnetic ferrite for charging pile and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020096665A1 (en) * | 2000-11-28 | 2002-07-25 | Minebea Co., Ltd. | Production process of Mn-Zn ferrite |
| EP1842837A1 (en) * | 2006-04-05 | 2007-10-10 | Thales | Ferrite material with little loss and low sintering temperature, manufacturing method and magnetic compound comprising said ferrite material |
| CN102325737A (en) * | 2009-02-20 | 2012-01-18 | 杰富意化学株式会社 | The MnZnCo based ferrite |
| CN103680796A (en) * | 2013-12-10 | 2014-03-26 | 苏州冠达磁业有限公司 | Manganese zinc ferrite with characteristics of high temperature, low power consumption and high overlaying, and preparation method thereof |
| CN107352992A (en) * | 2017-07-04 | 2017-11-17 | 浙江大学 | A kind of powder size control method of wideband wide-temperature and low-consumption manganese-zinc ferrite |
| CN111233452A (en) * | 2019-10-18 | 2020-06-05 | 横店集团东磁股份有限公司 | High-frequency high-impedance lean iron manganese zinc ferrite and preparation method thereof |
-
2020
- 2020-09-27 CN CN202011034841.6A patent/CN112142458A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020096665A1 (en) * | 2000-11-28 | 2002-07-25 | Minebea Co., Ltd. | Production process of Mn-Zn ferrite |
| EP1842837A1 (en) * | 2006-04-05 | 2007-10-10 | Thales | Ferrite material with little loss and low sintering temperature, manufacturing method and magnetic compound comprising said ferrite material |
| CN102325737A (en) * | 2009-02-20 | 2012-01-18 | 杰富意化学株式会社 | The MnZnCo based ferrite |
| CN103680796A (en) * | 2013-12-10 | 2014-03-26 | 苏州冠达磁业有限公司 | Manganese zinc ferrite with characteristics of high temperature, low power consumption and high overlaying, and preparation method thereof |
| CN107352992A (en) * | 2017-07-04 | 2017-11-17 | 浙江大学 | A kind of powder size control method of wideband wide-temperature and low-consumption manganese-zinc ferrite |
| CN111233452A (en) * | 2019-10-18 | 2020-06-05 | 横店集团东磁股份有限公司 | High-frequency high-impedance lean iron manganese zinc ferrite and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| FENG LIU ET.AL: "Influence of wastewater sludge pyrolysis char as dopants on the microstructure and electromagnetic wave absorbing properties of iron deficient Mn-Zn ferrite (Zn0.75Mn0.75Fe1.5O4) based on microwave induced sintering method", 《JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS》 * |
| 张潇 等: "掺杂锰锌铁氧体复合物结构性能的研究进展", 《印染》 * |
| 王明罡 等: "锰锌铁氧体的制备及掺杂研究", 《科技创新》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114195500A (en) * | 2022-02-18 | 2022-03-18 | 天通控股股份有限公司 | Wide-temperature high-frequency high-magnetic-flux-density manganese-zinc soft magnetic ferrite for charging pile and preparation method thereof |
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Address after: 226600 No. 29 Tongyang Road, Haian Town, Haian County, Nantong City, Jiangsu Province Applicant after: Nantong guanyouda Magnetic Industry Co.,Ltd. Address before: 226600 Nantong guanyouda Magnetic Industry Co., Ltd., 29 Tongyang Road, Hai'an town, Hai'an County, Nantong City, Jiangsu Province Applicant before: NANTONG GUANYOUDA MAGNET Co.,Ltd. |
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Application publication date: 20201229 |