CN105036726A - High-performance Mn-Zn ferrite material and preparation method - Google Patents
High-performance Mn-Zn ferrite material and preparation method Download PDFInfo
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Abstract
The invention discloses a high-performance Mn-Zn ferrite material. The material comprises, by weight, 50-90 parts of main ingredients, 0.05-0.08 subsidiary ingredients and 1-2 parts of polyving akohol; the main ingredients comprise, by Moore, 30-50 parts of Fe<2>O<3>, 15-20 parts of ZnO and 14-30 parts of MnO; the subsidiary ingredients comprise, by weight, 15-30 parts of SiO<2>, 5-15 parts of Bi<2>O<3>, 5-10 parts of Gd<2>O<3>, 1-3 parts of In<2>O<3>, 2-5 parts of Nb<2>O<5>, 5-12 parts of CaCO<3>, 5-10 parts of Nb<2>O, 1-2 parts of TiO, 1-2 parts of SnO and 1-3 parts of Co<2>O; The invention further discloses a preparation method of the high-performance Mn-Zn ferrite material. The high-performance Mn-Zn ferrite material is high in saturation flux density and Curie temperature and low in loss within a wide temperature range.
Description
Technical field
The present invention relates to Ferrite Material technical field, particularly relate to a kind of high-performance Mn-Zn Ferrite Material and preparation method.
Background technology
Mn-Zn ferrite is one of most important soft magnetic ferrite, high magnetic conductivity soft-magnetic ferrite material is a kind of functional materials applied widely, at broadband transformer, low-frequency transformer, miniature toroidal pulse transformer, broadcast, TV, electronic instrument, computer and compact inductor etc. are widely used in field, because current digital communication and optical fiber communication technology just upgrade with very fast speed, eliminate traditional analog communication equipment, in the urgent need to saturation magnetic flux density, Curie temperature is all higher, and the high-performance Mn-Zn Ferrite Material that loss in wide temperature range is low.
Summary of the invention
The present invention proposes a kind of high-performance Mn-Zn Ferrite Material and preparation method, goods saturation magnetic flux density, impedance and Curie temperature are all higher, frequency range, and the low-loss in wide temperature range.
A kind of high-performance Mn-Zn Ferrite Material that the present invention proposes, its raw material comprises 50-90 part principal constituent by weight, the auxiliary composition of 0.05-0.08 part, 1-2 part polyvinyl alcohol;
The raw material of described principal constituent comprises by molar part: Fe
2o
330-50 part, ZnO15-20 part, MnO14-30 part;
The raw material of described auxiliary composition comprises by weight: SiO
215-30 part, Bi
2o
35-15 part, Gd
2o
35-10 part, In
2o
31-3 part, Nb
2o
52-5 part, CaCO
35-12 part, Nb
2o5-10 part, TiO1-2 part, SnO1-2 part, Co
2o1-3 part.
Preferably, its raw material comprises 80-86 part principal constituent by weight, the auxiliary composition of 0.06-0.066 part, 1.4-1.6 part polyvinyl alcohol.
Preferably, the raw material of described principal constituent comprises by molar part: Fe
2o
340-44 part, ZnO16-18 part, MnO20-23 part.
Preferably, the raw material of described auxiliary composition comprises by weight: SiO
220-24 part, Bi
2o
310-13 part, Gd
2o
36-8 part, In
2o
31.5-2 part, Nb
2o
53-4 part, CaCO
36-10 part, Nb
2o6-8 part, TiO1.5-1.8 part, SnO1.2-1.5 part, Co
2o2-2.2 part.
Preferably, 1-2 part caking agent is also comprised.
Preferably, caking agent is polyvinyl alcohol.
The preparation method of a kind of high-performance Mn-Zn Ferrite Material that the present invention proposes, comprises the steps:
S1, to be mixed by the raw material of principal constituent and carry out sand milling, presintering, pre-sintering temperature 600-640 DEG C, the presintering time is 10-20h, pulverizes, obtains the powder that particle diameter is 5-15 μm;
S2, the powder obtained by S1 are sent in sand mill, and add 45-50wt% binding agent and carry out sand milling, the sand milling time is 70-90min, send into die for molding and obtain Preburning material;
The raw material adding auxiliary composition in S3, the Preburning material that obtains to S2 carries out sand milling, obtains slip;
Adding residue binding agent in S4, the slip that obtained by S3, to carry out mist projection granulating shaping, obtains precast body;
S5, sinter in the pushed bat kiln of the precast body feeding nitrogen atmosphere protection that S4 is obtained, in sintering process, first from room temperature with the ramp of 1-3 DEG C/min to 300-450 DEG C, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.1-0.3%, insulation 20-30min, continue to be warming up to 500-560 DEG C with the speed of 1-2 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.2-0.35%, insulation 10-15min, continue to be warming up to 900-940 DEG C with the speed of 0.5-1.5 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 1-1.5%, insulation 20-50min, continue to be warming up to 1300-1350 DEG C with the speed of 1-3 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 2-4%, insulation 20-30h, arranging oxygen partial pressure concentration in nitrogen atmosphere is 1-5%, 600-700 DEG C is cooled to the speed of 2-5 DEG C/min, insulation 5-15min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.05-0.08%, room temperature is cooled to the speed of 0.5-1 DEG C/min, obtain high-performance Mn-Zn Ferrite Material.
Preferably, in S1, pre-sintering temperature 620-630 DEG C, the presintering time is 14-18h.
Preferably, in S5, in sintering process, first from room temperature with the ramp of 1.5-2 DEG C/min to 400-410 DEG C, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.2-0.24, insulation 24-26min, continue to be warming up to 520-530 DEG C with the speed of 1.5-1.8 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.25-0.3%, insulation 12-14in, continue to be warming up to 920-925 DEG C with the speed of 0.6-1 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 1.2-1.4%, insulation 30-45min, continue to be warming up to 1320-1340 DEG C with the speed of 1.5-2 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 3-3.4%, insulation 24-26h, arranging oxygen partial pressure concentration in nitrogen atmosphere is 2-4%, 660-680 DEG C is cooled to the speed of 3-4.5 DEG C/min, insulation 6-10min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.06-0.075%, room temperature is cooled to the speed of 0.6-0.8 DEG C/min, obtain high-performance Mn-Zn Ferrite Material.
Preferably, in S5, in sintering process, first from room temperature with the ramp to 405 DEG C of 1.6 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.21, insulation 25min, continue to be warming up to 525 DEG C with the speed of 1.6 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.26%, insulation 13in, continue to be warming up to 922 DEG C with the speed of 0.8 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 1.35%, insulation 42min, continue to be warming up to 1330 DEG C with the speed of 1.6 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 3.2%, insulation 25h, arranging oxygen partial pressure concentration in nitrogen atmosphere is 3.5%, 675 DEG C are cooled to the speed of 4.2 DEG C/min, insulation 8min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.072%, room temperature is cooled to the speed of 0.75 DEG C/min, obtain high-performance Mn-Zn Ferrite Material.
The present invention is by limiting material principal constituent, minor component composition, coordinate suitable sintering process, make high-performance Mn-Zn Ferrite Material, be 100kHz/200mT in test condition, loss in 25-120 DEG C of temperature range is 310-300kW/m3, achieves the low-loss in wide temperature range; When test condition 1194A/m, the saturation magnetic flux density of 25 DEG C is 570-580mT, and the saturation magnetic flux density of 100 DEG C is 360-380mT, and the magnetic permeability of 25 DEG C of 10kHz is 11000-12500%; Curie temperature is 145-155 DEG C.Saturation magnetic flux density of the present invention, Curie temperature are all higher, and loss in wide temperature range is low.
Accompanying drawing explanation
Fig. 1 is a kind of high-performance Mn-Zn Ferrite Material preparation technology schema in the embodiment of the present invention.
Embodiment
Embodiment 1
A kind of high-performance Mn-Zn Ferrite Material, its raw material comprises 50 parts of principal constituents by weight, 0.08 part of auxiliary composition, 1 part of polyvinyl alcohol;
The raw material of described principal constituent comprises by molar part: Fe
2o
350 parts, ZnO15 part, MnO30 part;
The raw material of described auxiliary composition comprises by weight: SiO
215 parts, Bi
2o
315 parts, Gd
2o
35 parts, In
2o
33 parts, Nb
2o
52 parts, CaCO
312 parts, Nb
2o5 part, TiO2 part, SnO1 part, Co
2o3 part.
Embodiment 2
A kind of high-performance Mn-Zn Ferrite Material, its raw material comprises 90 parts of principal constituents by weight, 0.05 part of auxiliary composition, 2 parts of polyvinyl alcohol;
The raw material of described principal constituent comprises by molar part: Fe
2o
330 parts, ZnO20 part, MnO14 part;
The raw material of described auxiliary composition comprises by weight: SiO
230 parts, Bi
2o
35 parts, Gd
2o
310 parts, In
2o
31 part, Nb
2o
55 parts, CaCO
35 parts, Nb
2o10 part, TiO1 part, SnO2 part, Co
2o1 part.
Embodiment 3
A kind of high-performance Mn-Zn Ferrite Material, its raw material comprises 80 parts of principal constituents by weight, 0.066 part of auxiliary composition, 1.4 parts of polyvinyl alcohol;
The raw material of described principal constituent comprises by molar part: Fe
2o
344 parts, ZnO16 part, MnO23 part;
The raw material of described auxiliary composition comprises by weight: SiO
220 parts, Bi
2o
313 parts, Gd
2o
36 parts, In
2o
32 parts, Nb
2o
53 parts, CaCO
310 parts, Nb
2o6 part, TiO1.8 part, SnO1.2 part, Co
2o2.2 part.
With reference to Fig. 1, the preparation method of above-mentioned high-performance Mn-Zn Ferrite Material, comprises the steps:
S1, to be mixed by the raw material of principal constituent and carry out sand milling, presintering, pre-sintering temperature 600 DEG C, the presintering time is 20h, pulverizes, obtains the powder that particle diameter is 5-15 μm;
S2, the powder obtained by S1 are sent in sand mill, and add 45wt% binding agent and carry out sand milling, the sand milling time is 90min, send into die for molding and obtain Preburning material;
The raw material adding auxiliary composition in S3, the Preburning material that obtains to S2 carries out sand milling, obtains slip;
Adding residue binding agent in S4, the slip that obtained by S3, to carry out mist projection granulating shaping, obtains precast body;
S5, sinter in the pushed bat kiln of the precast body feeding nitrogen atmosphere protection that S4 is obtained, in sintering process, first from room temperature with the ramp to 450 DEG C of 1 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.1%, insulation 30min, continue to be warming up to 560 DEG C with the speed of 1 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.2%, insulation 15min, continue to be warming up to 940 DEG C with the speed of 0.5 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 1%, insulation 50min, continue to be warming up to 1350 DEG C with the speed of 1 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 2%, insulation 30h, arranging oxygen partial pressure concentration in nitrogen atmosphere is 1%, 600 DEG C are cooled to the speed of 5 DEG C/min, insulation 15min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.05%, room temperature is cooled to the speed of 1 DEG C/min, obtain high-performance Mn-Zn Ferrite Material.
Embodiment 4
A kind of high-performance Mn-Zn Ferrite Material, its raw material comprises 86 parts of principal constituents by weight, 0.06 part of auxiliary composition, 1.6 parts of polyvinyl alcohol;
The raw material of described principal constituent comprises by molar part: Fe
2o
340 parts, ZnO18 part, MnO20 part;
The raw material of described auxiliary composition comprises by weight: SiO
224 parts, Bi
2o
310 parts, Gd
2o
38 parts, In
2o
31.5 parts, Nb
2o
54 parts, CaCO
36 parts, Nb
2o8 part, TiO1.5 part, SnO1.5 part, Co
2o2 part.
With reference to Fig. 1, the preparation method of above-mentioned high-performance Mn-Zn Ferrite Material, comprises the steps:
S1, to be mixed by the raw material of principal constituent and carry out sand milling, presintering, pre-sintering temperature 640 DEG C, the presintering time is 10h, pulverizes, obtains the powder that particle diameter is 5-15 μm;
S2, the powder obtained by S1 are sent in sand mill, and add 50wt% binding agent and carry out sand milling, the sand milling time is 70min, send into die for molding and obtain Preburning material;
The raw material adding auxiliary composition in S3, the Preburning material that obtains to S2 carries out sand milling, obtains slip;
Adding residue binding agent in S4, the slip that obtained by S3, to carry out mist projection granulating shaping, obtains precast body;
S5, sinter in the pushed bat kiln of the precast body feeding nitrogen atmosphere protection that S4 is obtained, in sintering process, first from room temperature with the ramp to 300 DEG C of 3 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.3%, insulation 20min, continue to be warming up to 500 DEG C with the speed of 2 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.35%, insulation 10min, continue to be warming up to 900 DEG C with the speed of 1.5 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 1.5%, insulation 20min, continue to be warming up to 1300 DEG C with the speed of 3 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 4%, insulation 20h, arranging oxygen partial pressure concentration in nitrogen atmosphere is 5%, 700 DEG C are cooled to the speed of 2 DEG C/min, insulation 5min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.08%, room temperature is cooled to the speed of 0.5 DEG C/min, obtain high-performance Mn-Zn Ferrite Material.
Embodiment 5
A kind of high-performance Mn-Zn Ferrite Material, its raw material comprises 84 parts of principal constituents by weight, 0.063 part of auxiliary composition, 1.5 parts of polyvinyl alcohol;
The raw material of described principal constituent comprises by molar part: Fe
2o
342 parts, ZnO17 part, MnO22 part;
The raw material of described auxiliary composition comprises by weight: SiO
222 parts, Bi
2o
311 parts, Gd
2o
37 parts, In
2o
31.8 parts, Nb
2o
53.4 parts, CaCO
38 parts, Nb
2o7 part, TiO1.6 part, SnO1.4 part, Co
2o2.1 part.
With reference to Fig. 1, the preparation method of above-mentioned high-performance Mn-Zn Ferrite Material, comprises the steps:
S1, to be mixed by the raw material of principal constituent and carry out sand milling, presintering, pre-sintering temperature 620 DEG C, the presintering time is 15h, pulverizes, obtains the powder that particle diameter is 5-15 μm;
S2, the powder obtained by S1 are sent in sand mill, and add 48wt% binding agent and carry out sand milling, the sand milling time is 80min, send into die for molding and obtain Preburning material;
The raw material adding auxiliary composition in S3, the Preburning material that obtains to S2 carries out sand milling, obtains slip;
Adding residue binding agent in S4, the slip that obtained by S3, to carry out mist projection granulating shaping, obtains precast body;
S5, sinter in the pushed bat kiln of the precast body feeding nitrogen atmosphere protection that S4 is obtained, in sintering process, first from room temperature with the ramp to 400 DEG C of 2 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.2%, insulation 25min, continue to be warming up to 540 DEG C with the speed of 1.2 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.3%, insulation 12min, continue to be warming up to 920 DEG C with the speed of 1 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 1.2%, insulation 40min, continue to be warming up to 1320 DEG C with the speed of 2 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 3%, insulation 25h, arranging oxygen partial pressure concentration in nitrogen atmosphere is 3%, 650 DEG C are cooled to the speed of 4 DEG C/min, insulation 10min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.06%, room temperature is cooled to the speed of 0.8 DEG C/min, obtain high-performance Mn-Zn Ferrite Material.
In embodiment 1-5, described high-performance Mn-Zn Ferrite Material is loss in 100kHz/200mT, 25-120 DEG C of temperature range in test condition is 310-300kW/m3; When test condition 1194A/m, the saturation magnetic flux density of 25 DEG C is 570-580mT, and the saturation magnetic flux density of 100 DEG C is 360-380mT, and the magnetic permeability of 25 DEG C of 10kHz is 11000-12500%; Curie temperature is 145-155 DEG C.
Saturation magnetic flux density of the present invention, Curie temperature are all higher, and loss in wide temperature range is low.
Embodiments provide the above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (10)
1. a high-performance Mn-Zn Ferrite Material, is characterized in that, its raw material comprises 50-90 part principal constituent by weight, the auxiliary composition of 0.05-0.08 part;
The raw material of described principal constituent comprises by molar part: Fe
2o
330-50 part, ZnO15-20 part, MnO14-30 part;
The raw material of described auxiliary composition comprises by weight: SiO
215-30 part, Bi
2o
35-15 part, Gd
2o
35-10 part, In
2o
31-3 part, Nb
2o
52-5 part, CaCO
35-12 part, Nb
2o5-10 part, TiO1-2 part, SnO1-2 part, Co
2o1-3 part.
2. high-performance Mn-Zn Ferrite Material according to claim 1, is characterized in that, its raw material comprises 80-86 part principal constituent by weight, the auxiliary composition of 0.06-0.066 part.
3. high-performance Mn-Zn Ferrite Material according to claim 1, is characterized in that, the raw material of described principal constituent comprises by molar part: Fe
2o
340-44 part, ZnO16-18 part, MnO20-23 part.
4. high-performance Mn-Zn Ferrite Material according to claim 1, is characterized in that, the raw material of described auxiliary composition comprises by weight: SiO
220-24 part, Bi
2o
310-13 part, Gd
2o
36-8 part, In
2o
31.5-2 part, Nb
2o
53-4 part, CaCO
36-10 part, Nb
2o6-8 part, TiO1.5-1.8 part, SnO1.2-1.5 part, Co
2o2-2.2 part.
5. the high-performance Mn-Zn Ferrite Material according to any one of claim 1-4, is characterized in that, also comprises 1-2 part caking agent.
6. high-performance Mn-Zn Ferrite Material according to claim 5, is characterized in that, caking agent is polyvinyl alcohol.
7. a preparation method for the high-performance Mn-Zn Ferrite Material according to any one of claim 1-6, is characterized in that, comprise the steps:
S1, to be mixed by the raw material of principal constituent and carry out sand milling, presintering, pre-sintering temperature 600-640 DEG C, the presintering time is 10-20h, pulverizes, obtains the powder that particle diameter is 5-15 μm;
S2, the powder obtained by S1 are sent in sand mill, and add 45-50wt% binding agent and carry out sand milling, the sand milling time is 70-90min, send into die for molding and obtain Preburning material;
The raw material adding auxiliary composition in S3, the Preburning material that obtains to S2 carries out sand milling, obtains slip;
Adding residue binding agent in S4, the slip that obtained by S3, to carry out mist projection granulating shaping, obtains precast body;
S5, sinter in the pushed bat kiln of the precast body feeding nitrogen atmosphere protection that S4 is obtained, in sintering process, first from room temperature with the ramp of 1-3 DEG C/min to 300-450 DEG C, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.1-0.3%, insulation 20-30min, continue to be warming up to 500-560 DEG C with the speed of 1-2 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.2-0.35%, insulation 10-15min, continue to be warming up to 900-940 DEG C with the speed of 0.5-1.5 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 1-1.5%, insulation 20-50min, continue to be warming up to 1300-1350 DEG C with the speed of 1-3 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 2-4%, insulation 20-30h, arranging oxygen partial pressure concentration in nitrogen atmosphere is 1-5%, 600-700 DEG C is cooled to the speed of 2-5 DEG C/min, insulation 5-15min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.05-0.08%, room temperature is cooled to the speed of 0.5-1 DEG C/min, obtain high-performance Mn-Zn Ferrite Material.
8. the preparation method of high-performance Mn-Zn Ferrite Material according to claim 7, is characterized in that, in S1, pre-sintering temperature 620-630 DEG C, the presintering time is 14-18h.
9. the preparation method of high-performance Mn-Zn Ferrite Material according to claim 7, it is characterized in that, in S5, in sintering process, first from room temperature with the ramp of 1.5-2 DEG C/min to 400-410 DEG C, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.2-0.24, insulation 24-26min, continue to be warming up to 520-530 DEG C with the speed of 1.5-1.8 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.25-0.3%, insulation 12-14in, continue to be warming up to 920-925 DEG C with the speed of 0.6-1 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 1.2-1.4%, insulation 30-45min, continue to be warming up to 1320-1340 DEG C with the speed of 1.5-2 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 3-3.4%, insulation 24-26h, arranging oxygen partial pressure concentration in nitrogen atmosphere is 2-4%, 660-680 DEG C is cooled to the speed of 3-4.5 DEG C/min, insulation 6-10min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.06-0.075%, room temperature is cooled to the speed of 0.6-0.8 DEG C/min, obtain high-performance Mn-Zn Ferrite Material.
10. the preparation method of high-performance Mn-Zn Ferrite Material according to claim 7, it is characterized in that, in S5, in sintering process, first from room temperature with the ramp to 405 DEG C of 1.6 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.21, insulation 25min, continue to be warming up to 525 DEG C with the speed of 1.6 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.26%, insulation 13in, continue to be warming up to 922 DEG C with the speed of 0.8 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 1.35%, insulation 42min, continue to be warming up to 1330 DEG C with the speed of 1.6 DEG C/min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 3.2%, insulation 25h, arranging oxygen partial pressure concentration in nitrogen atmosphere is 3.5%, 675 DEG C are cooled to the speed of 4.2 DEG C/min, insulation 8min, arranging oxygen partial pressure concentration in nitrogen atmosphere is 0.072%, room temperature is cooled to the speed of 0.75 DEG C/min, obtain high-performance Mn-Zn Ferrite Material.
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| CN107129292A (en) * | 2017-06-15 | 2017-09-05 | 浙江大学 | One kind prepares the ferritic ionic association alternatives of high-performance MnZn |
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| CN111138180A (en) * | 2019-12-25 | 2020-05-12 | 江门安磁电子有限公司 | Broadband high-impedance manganese-zinc ferrite material and preparation method thereof |
| CN115448710A (en) * | 2022-09-05 | 2022-12-09 | 西南应用磁学研究所(中国电子科技集团公司第九研究所) | Low-frequency ferrite wave-absorbing material and preparation method thereof |
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| CN107129292B (en) * | 2017-06-15 | 2018-05-01 | 浙江大学 | One kind prepares the ferritic ionic association alternatives of high-performance MnZn |
| CN109665829A (en) * | 2017-10-14 | 2019-04-23 | 山东春光磁电科技有限公司 | A kind of high magnetic flux ferrite powder powder that can reduce cracking |
| CN109665829B (en) * | 2017-10-14 | 2020-09-22 | 山东春光磁电科技有限公司 | High magnetic flux ferrite powder capable of reducing cracking |
| CN111138180A (en) * | 2019-12-25 | 2020-05-12 | 江门安磁电子有限公司 | Broadband high-impedance manganese-zinc ferrite material and preparation method thereof |
| CN115448710A (en) * | 2022-09-05 | 2022-12-09 | 西南应用磁学研究所(中国电子科技集团公司第九研究所) | Low-frequency ferrite wave-absorbing material and preparation method thereof |
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