CN115010480A - Preparation method of manganese-zinc ferrite KAH100 material - Google Patents
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Abstract
The embodiment of the invention discloses a preparation method of a manganese-zinc ferrite KAH100 material, which comprises the following steps: according to Fe 2 O 3 52.80mo 1%, MnO 28.50mo 1% and ZnO 18.70mo 1% in proportion to obtain raw materials; and sequentially carrying out dry ball milling, presintering, wet sand milling, spray granulation, blank preparation and sintering treatment on the raw materials to obtain the manganese zinc ferrite KAH100 material with high Curie temperature and high magnetic conductivity. Through the reconfiguration of the formula, the Curie temperature of the material is greatly improved, and the requirements of vehicle-mounted products are met.
Description
Technical Field
The invention relates to the technical field of material preparation, in particular to a preparation method of a manganese-zinc ferrite KAH100 material.
Background
The Curie temperature Tc of a common ui-10000 high-conductivity material (such as Xin Jiu KA100) can only reach 120 ℃, and the high-conductivity material is mainly used for common household appliances and various devices with low environmental temperature requirements, and along with the development of automobile electronic products, the Tc is required to reach about 150 ℃ so as to meet the requirement of working in a high-temperature environment. When the ambient temperature exceeds the Tc point, the inductor fails, and the operation of the whole automobile electronic circuit is influenced.
The Tc temperature point is only 125 ℃, and the material can only be used for common household appliances or equipment matched products with the working temperature of between normal temperature and 100 ℃, and if the working environment is higher than the TC temperature of the existing material, the product performance can be invalid, thereby endangering the use and even leading to the property or personal safety of users. Such as magnetic core products for automobiles, military or special equipment, require the use of higher Tc materials.
Disclosure of Invention
In view of the above, the present invention provides a method for preparing a manganese zinc ferrite KAH100 material, the method comprising:
according to Fe 2 O 3 52.80mo 1%, MnO 28.50mo 1% and ZnO 18.70mo 1% to obtain raw materials;
and sequentially carrying out dry ball milling, presintering, wet sanding, spray granulation, blank preparation and sintering treatment on the raw materials to obtain the manganese zinc ferrite KAH100 material with high Curie temperature and high magnetic conductivity.
Optionally, the step of performing dry ball milling on the raw material includes:
putting the raw materials and deionized water into a ball mill;
and after the preset time, drying and granulating the ball-milled liquid to obtain initial particles.
Optionally, the step of pre-firing the raw materials includes:
and (3) putting the initial particles into a presintering furnace, preserving heat for 3 hours at 860 ℃, and presintering the raw materials to obtain the initial materials.
Optionally, the step of wet sanding the raw material comprises:
placing the starting material and the predetermined impurities into a sand millThe middle base on deionized water is sanded to obtain an intermediate material, wherein the proportion mode of the preset impurities is as follows: 0.01 to 0.05 wt% of MoO3, 0.02 to 0.07 wt% of Bi2O3, and V 2 O 5 0.02 to 0.06 wt%, SnO 0.010 to 0.040 wt%, Nb2O5 0.020 to 0.060 wt%, CaO: 0.01 to 0.04 wt%, 10 to 60ppm of SiO 2; the sanding time is 100 minutes, and the granularity of the powder is controlled to be 0.9-1.00 mu m.
Optionally, the step of performing spray granulation on the raw material includes:
and adding PVA and a defoaming agent into the intermediate material, and then carrying out spray granulation to obtain intermediate particles meeting the sieving condition.
Optionally, the step of preparing a blank from the raw material includes:
and adding 0.1% of zinc stearate into the intermediate particles, and pressing to obtain T25 x 15 x 8 magnetic ring blanks.
Optionally, the step of sintering the raw material includes:
sintering the T25X 15X 8 magnetic ring blank to obtain the manganese zinc ferrite KAH100 material with high Curie temperature and high magnetic conductivity, wherein the sintering process comprises the following steps: the temperature of the heat preservation section is 1430 ℃ and is preserved for 8h, the temperature of the cooling section is 1400-1000 ℃, the temperature is reduced according to the cooling rate of 2 ℃/min and the temperature is reduced according to the temperature of 3 ℃/min below 1000 ℃.
Optionally, the method further includes:
and testing the manganese zinc ferrite KAH100 material with high Curie temperature and high magnetic conductivity to obtain an explanation result.
The embodiment of the invention has the following beneficial effects:
through the reconfiguration of the formula, the Curie temperature of the material is greatly improved, and the requirements of vehicle-mounted products are met. Through the process of adding impurities, ui keeps the level of 10K, and through adjusting the sintering process, the sintering density of the product is 5.0g/cm3, and the temperature point of the two peaks needs to be controlled between 22 and 29 ℃ to ensure ui and high-frequency characteristics.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
FIG. 1 is a flow chart of a method for preparing manganese zinc ferrite KAH100 material according to the present invention;
FIG. 2 is a graph of the results of testing a high Curie temperature high permeability manganese zinc ferrite KAH100 material prepared based on the method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present application provides a method for preparing a manganese zinc ferrite KAH100 material, the method including:
according to Fe 2 O 3 52.80mo 1%, MnO 28.50mo 1% and ZnO 18.70mo 1% to obtain raw materials;
and (3) using an electronic balance with the precision of 0.01g to obtain raw materials according to the proportioning mode.
And sequentially carrying out dry ball milling, presintering, wet sand milling, spray granulation, blank preparation and sintering treatment on the raw materials to obtain the manganese zinc ferrite KAH100 material with high Curie temperature and high magnetic conductivity.
Through the adjustment of the main formula, the Tc is improved from 120 ℃ to 160 ℃ on the premise that ui is not changed to 10K, and the problem that the Tc temperature of a vehicle-mounted matched magnetic core product is insufficient is solved.
Optionally, the step of performing dry ball milling on the raw material includes:
putting the raw materials and deionized water into a ball mill;
after a predetermined time, for example, 40 minutes by ball milling, the milled liquid is dried and granulated to obtain primary particles.
Optionally, the step of pre-firing the raw materials includes:
and (3) putting the initial particles into a pre-sintering furnace, preserving heat for 3 hours at 860 ℃, and pre-sintering the raw materials to obtain the initial material.
Optionally, the step of wet sanding the raw material comprises:
will initial material and preset impurity are put into the sand mill and are carried out the sanding based on the deionized water, obtain intermediate material, wherein, the ratio mode of presetting impurity is: 0.01 to 0.05 wt% of MoO3, 0.02 to 0.07 wt% of Bi2O3, and V 2 O 5 0.02 to 0.06 wt%, SnO 0.010 to 0.040 wt%, Nb2O5 0.020 to 0.060 wt%, CaO: 0.01 to 0.04 wt% and 10 to 60ppm of SiO 2; the sanding time is 100 minutes, and the granularity of the powder is controlled to be 0.9-1.00 mu m.
Optionally, the step of performing spray granulation on the raw material includes:
and adding PVA and a defoaming agent into the intermediate material, and then carrying out spray granulation to obtain intermediate particles meeting the sieving condition.
Optionally, the step of preparing a blank from the raw material includes:
and adding 0.1% of zinc stearate into the intermediate particles, and pressing to obtain T25 x 15 x 8 magnetic ring blanks.
Optionally, the step of sintering the raw material includes:
sintering the T25X 15X 8 magnetic ring blank to obtain the manganese zinc ferrite KAH100 material with high Curie temperature and high magnetic conductivity, wherein the sintering process comprises the following steps: the temperature of the heat preservation section is 1430 ℃ and is preserved for 8h, the temperature of the cooling section is 1400-1000 ℃, the temperature is reduced according to the cooling rate of 2 ℃/min and the temperature is reduced according to the temperature of 3 ℃/min below 1000 ℃. And (3) along with the change of the size of the product, changing the temperature point of the second peak, and adjusting the sintering atmosphere to control the temperature point of the second peak within the range of 22-29 ℃ so as to ensure that ui is within the standard range.
Optionally, as shown in fig. 2, the method further includes:
and testing the manganese zinc ferrite KAH100 material with high Curie temperature and high magnetic conductivity to obtain an explanation result.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (8)
1. A preparation method of a manganese zinc ferrite KAH100 material is characterized by comprising the following steps:
according to Fe 2 O 3 52.80mo 1%, MnO 28.50mo 1% and ZnO 18.70mo 1% in proportion to obtain raw materials;
and sequentially carrying out dry ball milling, presintering, wet sand milling, spray granulation, blank preparation and sintering treatment on the raw materials to obtain the manganese zinc ferrite KAH100 material with high Curie temperature and high magnetic conductivity.
2. The method of preparing a manganese zinc ferrite KAH100 material of claim 1, wherein said step of dry ball milling said raw material comprises:
putting the raw materials and deionized water into a ball mill;
and after the preset time, drying and granulating the ball-milled liquid to obtain initial particles.
3. The method of making a manganese zinc ferrite KAH100 material of claim 2, wherein said step of pre-firing said raw materials comprises:
and (3) putting the initial particles into a pre-sintering furnace, preserving heat for 3 hours at 860 ℃, and pre-sintering the raw materials to obtain the initial material.
4. The manganese zinc ferrite KAH100 material preparation method of claim 3, wherein said step of wet sanding said raw material comprises:
will initial material and predetermined impurity are put into the sand mill and are carried out the sanding based on deionized water, obtain intermediate material, wherein, the ratio mode of predetermineeing impurity is: 0.01 to 0.05 wt% of MoO3, 0.02 to 0.07 wt% of Bi2O3, and V 2 O 5 0.02 to 0.06 wt%, SnO 0.010 to 0.040 wt%, Nb2O5 0.020 to 0.060 wt%, CaO: 0.01 to 0.04 wt%, 10 to 60ppm of SiO 2; the sanding time is 100 minutes, and the granularity of the powder is controlled to be 0.9-1.00 mu m.
5. The manganese zinc ferrite KAH100 material preparation method of claim 4, wherein said step of spray granulating said raw material comprises:
and adding PVA and a defoaming agent into the intermediate material, and then carrying out spray granulation to obtain intermediate particles meeting the sieving condition.
6. The manganese zinc ferrite KAH100 material preparation method of claim 5 wherein said step of preparing a blank from said raw material comprises:
and adding 0.1% of zinc stearate into the intermediate particles, and pressing to obtain T25 x 15 x 8 magnetic ring blanks.
7. The manganese zinc ferrite KAH100 material preparation method of claim 6, wherein said step of sintering said raw material comprises:
sintering the T25X 15X 8 magnetic ring blank to obtain the manganese zinc ferrite KAH100 material with high Curie temperature and high magnetic conductivity, wherein the sintering process comprises the following steps: the temperature of the heat preservation section is 1430 ℃ and is preserved for 8h, the temperature of the cooling section is 1400-1000 ℃, the temperature is reduced according to the cooling rate of 2 ℃/min and the temperature is reduced according to the temperature of 3 ℃/min below 1000 ℃.
8. The manganese zinc ferrite KAH100 material preparation method of claim 1 further comprising:
and testing the manganese zinc ferrite KAH100 material with high Curie temperature and high magnetic conductivity to obtain an explanation result.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116217215A (en) * | 2023-03-17 | 2023-06-06 | 无锡斯贝尔磁性材料有限公司 | High-frequency low-power consumption JF51W MnZn ferrite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116217215A (en) * | 2023-03-17 | 2023-06-06 | 无锡斯贝尔磁性材料有限公司 | High-frequency low-power consumption JF51W MnZn ferrite material |
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