CN107935579B - Method for controlling valley point of manganese-zinc ferrite powder with wide temperature range and low temperature coefficient - Google Patents
Method for controlling valley point of manganese-zinc ferrite powder with wide temperature range and low temperature coefficient Download PDFInfo
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- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 title claims abstract description 20
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000000843 powder Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000654 additive Substances 0.000 claims abstract description 12
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- AMWRITDGCCNYAT-UHFFFAOYSA-L manganese oxide Inorganic materials [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims abstract description 7
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- UPWOEMHINGJHOB-UHFFFAOYSA-N oxo(oxocobaltiooxy)cobalt Chemical compound O=[Co]O[Co]=O UPWOEMHINGJHOB-UHFFFAOYSA-N 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 229910052906 cristobalite Inorganic materials 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 229910052682 stishovite Inorganic materials 0.000 claims description 2
- 229910052905 tridymite Inorganic materials 0.000 claims description 2
- 238000010923 batch production Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000000696 magnetic material Substances 0.000 abstract description 2
- 238000012827 research and development Methods 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004876 x-ray fluorescence Methods 0.000 description 3
- 238000012356 Product development Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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Abstract
The invention relates to the technical field of manganese-zinc ferrite magnetic material production, in particular to a method for accurately controlling the valley point of manganese-zinc ferrite powder with wide temperature and low temperature coefficient in product research and development and product batch production. The manganese-zinc ferrite powder comprises a main component and an additive; the main component is Fe2O3ZnO and Mn3O4Composition is carried out; the ZnO accounts for 4-9 wt% of the main component; said Fe2O3The weight percentage of the main component is according to the formula Fe2O3(wt%) 72.88-a ZnO (wt%); wherein when the control valley point is 80 ℃, the A value is 0.2278; wherein when the control valley point is 90 ℃, the A value is 0.2313; wherein the A value is 0.2358 when the control valley point is 100 ℃. The method provided by the invention can be used for developing new products, is also suitable for the condition that the component performance is deviated due to abnormal conditions during batch production of a production line, and has the advantages of simple adjustment method, convenience in operation, low cost and high benefit.
Description
Technical Field
The invention relates to the technical field of manganese-zinc ferrite magnetic material production, in particular to a method for accurately controlling the valley point of manganese-zinc ferrite powder with wide temperature and low temperature coefficient in product research and development and product batch production.
Background
With the expansion of communication networks, the working environment of communication equipment is becoming worse and often operates in an environment of alternating low and high temperatures, which requires the development of products that can be used in a wider environmental temperature range and have good stability. The soft magnetic ferrite material used as a power transformer or a filter is required to have moderate magnetic conductivity, high saturation magnetic induction intensity, low loss and good magnetic conductivity stability in a wide temperature range (-40 ℃ to +100 ℃).
However, with saturationThe requirement of magnetic induction intensity is higher and higher, and the Curie temperature of the product is increased along with the requirement. According to the existing two peak temperature TspAnd Curie temperature TCEmpirical formula Tsp＝0.88Tc-2.9y, wherein 0<y<2，Tc＝12.8*[Fe2O3(Mol％)-2*ZnO(Mol％)/3]100-81, however, the valley point temperature of the power type ferrite is an important factor for evaluating the product quality, and although the valley point temperature has correlation with the position of the two peaks, the prior literature never gives a relational expression between the valley point temperature and the position of the two peaks and the ferrite component. As the curie temperature increases, the sensitivity of the two-peak position and the valley point temperature to the main component becomes high; in practice, for Fe2O3ZnO and Mn3O4The control precision of the X-ray fluorescence detection device can control the valley point to meet the requirement only when the control precision of the X-ray fluorescence detection device reaches +/-0.05 percent, and the control requirement is difficult to achieve by the existing X-ray fluorescence detection device; meanwhile, when the product requirements change and new products are developed, the development difficulty is increased. How to more stably control the product quality, and timely and accurately adjust the components to control the product valley point temperature, and develop and prepare the manganese-zinc soft magnetic ferrite material which not only has wide temperature and low temperature coefficient, but also has low loss and high saturation magnetic induction intensity, is a difficult problem to be solved by technical personnel in the field.
Disclosure of Invention
The technical scheme to be solved by the invention is to provide a component design scheme which can effectively control the wide-temperature low-temperature coefficient manganese-zinc ferrite valley point and can stably and efficiently achieve the expected effect when a new product is developed under the condition of complex production line batch production or different ZnO mass fraction requirements.
A method for controlling the valley point of manganese zinc ferrite powder with wide temperature and low temperature coefficient is characterized in that the manganese zinc ferrite powder comprises a main component and an additive; the main component is Fe2O3ZnO and Mn3O4Composition is carried out; the ZnO accounts for 4-9 wt% of the main component; and selecting the mass percent of ZnO according to the actual requirement of a production line or the requirements of different saturation magnetization and ZnO content in product development.
Said Fe2O3Is in the weight percentage of the main componentAccording to the formula Fe2O3(wt%) 72.88-a ZnO (wt%); wherein when the control valley point is 80 ℃, the A value is 0.2278; wherein when the control valley point is 90 ℃, the A value is 0.2313; wherein the A value is 0.2358 when the control valley point is 100 ℃.
Wherein the additive is CaCO3、Co2O3、SiO2、V2O5And Nb2O5And (4) forming.
Wherein the additive is 0.015-0.05 wt% of CaCO3、0.1～0.4wt％Co2O3、0.001～0.005wt％SiO2、0.02～0.07wt％V2O5And 0.02 to 0.07 wt% Nb2O5Composition is carried out; the percentages are weight percentages of the main component.
Compared with the prior art, the prior empirical formula can only pass the prior two-peak temperature TspAnd Curie temperature TCEmpirical formula Tsp＝0.88Tc-2.9y, wherein 0<y<2，Tc＝12.8*[Fe2O3(Mol％)-2*ZnO(Mol％)/3]100-81, and find the direction of controlling the temperature of the valley point according to qualitative understanding and a large number of tests of the process personnel, can't calculate the temperature of the valley point accurately according to the composition, the invention has given the quantitative formula of the temperature of the valley point and composition in the range of the said composition, can shorten the development cycle of the manganese zinc ferrite powder of wide temperature low temperature coefficient, more suitable for producing line batch production than the existing empirical formula at the same time, the accuracy is higher, has reduced the demand for the control precision of the composition, it is simple to have adjustment methods, easy to operate, with low costs, advantage with high benefits.
Drawings
FIG. 1 is a formula relationship diagram of wide-temperature low-loss manganese-zinc ferrite with different valley points
Detailed Description
The following embodiments are further illustrative of the present invention, but the following embodiments are merely illustrative of the present invention and do not represent that the scope of the present invention is limited thereto, and all equivalent substitutions made by the idea of the present invention are within the scope of the present invention.
Example 1
The new product development requirement is the manganese zinc ferrite with the low temperature coefficient and the wide temperature range of 90 ℃ at the valley point, the ZnO mass percentage requirement is 4 percent, and Fe can be obtained by calculation according to a formula provided by the attached drawing2O371.95% by mass, Mn3O4The mass percentage of the main formula and the additive is 24.05 percent, and the composition formula of the main formula and the additive is 0.015 percent of CaCO by weight3、0.3wt％Co2O3、0.003wt％SiO2、0.05wt％V2O5、0.02wt％Nb2O5The produced manganese-zinc ferrite extraction powder has the following electrical properties that the valley point temperature is 90 ℃ and the electrical properties are as follows:
example 2
The wide-temperature low-temperature coefficient manganese-zinc ferrite with the valley point of 100 ℃ is produced, the mass percent of ZnO is 5.0 percent, and Fe can be obtained by calculation according to a formula provided by the attached drawing2O371.70% by mass of Mn3O4The mass percentage of the main formula and the additive is 23.30 percent, and the composition formula of the main formula and the additive is 0.015 percent of CaCO by weight3、0.3wt％Co2O3、0.002wt％SiO2、0.05wt％V2O5、0.02wt％Nb2O5The produced manganese-zinc ferrite extraction powder has the valley point temperature of 97 ℃ and the following electrical properties: :
example 3
The wide-temperature low-temperature coefficient manganese-zinc ferrite with the valley point of 80 ℃ is produced, the mass percent of ZnO is 6.6 percent, and Fe can be obtained by calculation according to a formula provided by the attached drawing2O371.33% by mass, Mn3O422.07 percent by mass, and 0.015 percent by weight of CaCO according to the composition formula of the main formula and the additive3、0.3wt％Co2O3、0.002wt％SiO2、0.05wt％V2O5、0.02wt％Nb2O5The produced manganese-zinc ferrite extraction powder has the following electrical properties that the valley point temperature is 79 ℃ and the electrical properties are as follows: :
the test parameters in the above examples were that after a sample ring of a phi 25mm × 10mm × 5mm specification was sintered in a bell jar furnace in a balanced atmosphere, the sample ring was tested using an E4980A precision LCR meter and a high and low temperature test chamber under the conditions: f is 10kHz, I is 0.8mA, and N is 15 Ts.
Claims (3)
1. A method for controlling the valley point of manganese zinc ferrite powder with wide temperature and low temperature coefficient is characterized in that the manganese zinc ferrite powder comprises a main component and an additive; the main component is Fe2O3ZnO and Mn3O4Composition is carried out; the ZnO accounts for 4-9 wt% of the main component;
said Fe2O3The weight percentage of the main component is according to the formula Fe2O3(wt%) 72.88-a ZnO (wt%); wherein when the control valley point is 80 ℃, the A value is 0.2278; wherein when the control valley point is 90 ℃, the A value is 0.2313; wherein the A value is 0.2358 when the control valley point is 100 ℃.
2. The method of claim 1, wherein the additive is formed from CaCO3、Co2O3、SiO2、V2O5And Nb2O5And (4) forming.
3. The method of claim 1, wherein the additive is comprised of 0.015-0.05 wt% CaCO3、0.1～0.4wt％Co2O3、0.001～0.005wt％SiO2、0.02～0.07wt％V2O5And 0.02 to 0.07 wt% Nb2O5Composition is carried out; the percentages are all based on the mainWeight percentage of the components.
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| CN114634356B (en) * | 2022-03-14 | 2023-06-02 | 西南应用磁学研究所(中国电子科技集团公司第九研究所) | Ultralow-loss manganese zinc ferrite material at 1MHz and preparation method thereof |
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| EP0551907A3 (en) * | 1992-01-14 | 1994-07-13 | Matsushita Electric Ind Co Ltd | An oxide magnetic material |
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| CN105565790A (en) * | 2014-10-09 | 2016-05-11 | 桐乡市耀润电子有限公司 | YR950 wide-temperature high-direct-current-superposition low-power-consumption manganese-zinc ferrite material and preparation method thereof |
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| EP0551907A3 (en) * | 1992-01-14 | 1994-07-13 | Matsushita Electric Ind Co Ltd | An oxide magnetic material |
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