CN109369167A - A kind of high resistivity soft magnetic ferrite and its preparation method and application - Google Patents

A kind of high resistivity soft magnetic ferrite and its preparation method and application Download PDF

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CN109369167A
CN109369167A CN201811185263.9A CN201811185263A CN109369167A CN 109369167 A CN109369167 A CN 109369167A CN 201811185263 A CN201811185263 A CN 201811185263A CN 109369167 A CN109369167 A CN 109369167A
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soft magnetic
high resistivity
magnetic ferrite
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瞿德林
王久如
王晓祥
李丛俊
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TIANCHANG ZHONGDE ELECTRONICS CO Ltd
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TIANCHANG ZHONGDE ELECTRONICS CO Ltd
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Abstract

The invention discloses a kind of high resistivity soft magnetic ferrite, raw material includes: Fe by weight2O3、NiO、ZnO、MnO、Mn3O4、CaO、TiO2、Sb2O3、SnO、V2O5.The invention also discloses a kind of preparation method and applications of high resistivity soft magnetic ferrite.Formulation ratio is scientific and reasonable in the present invention, in conjunction with sintering process, improves resistivity, reduces soft magnetic ferrite power loss, realizes high performance soft magnetic ferrite.

Description

A kind of high resistivity soft magnetic ferrite and its preparation method and application
Technical field
The present invention relates to technical field of magnetic materials, and in particular to a kind of high resistivity soft magnetic ferrite and its preparation Methods and applications.
Background technique
Soft magnetic ferrite is a kind of electronics industry basic material, is widely used to automatic control, information storage, magnetic The various industries such as record head, TV, communication.The performance of soft magnetic ferrite mainly has ingredient and preparation process to be determined , it on the one hand to need to optimize ingredient to the soft magnetic ferrite for obtaining good comprehensive performance, on the other hand then need to visit Rope goes out suitable preparation process.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of high resistivity soft magnetic ferrite and its Preparation method and application, the present invention have high resistivity, low-loss, have excellent performance.
The invention proposes a kind of high resistivity soft magnetic ferrite, raw material includes: 45-70 parts by weight Fe2O3, 1-5 parts NiO, 20-30 parts ZnO, 30-42 parts MnO, 3-9 parts of Mn3O4, 1-4 parts of CaO, 0.1-0.5 parts of TiO2、0.2-0.7 Part Sb2O3, 0.2-0.6 parts of SnO, 0.5-2.0 parts of V2O5。
Preferably, raw material includes: 50-65 parts of Fe by weight2O3, 2-4.5 parts NiO, 22-27 parts ZnO, 33-40 parts MnO, 4-8 parts of Mn3O4, 1.5-3 parts of CaO, 0.15-0.45 parts of TiO2, 0.3-0.6 parts of Sb2O3, 0.25-0.5 parts of SnO, 0.8-1.7 Part V2O5。
Preferably, raw material includes: 54-61 parts of Fe by weight2O3, 2.5-4 parts NiO, 23-26 parts ZnO, 35-39 parts MnO, 5-7 parts of Mn3O4, 1.7-2.5 parts of CaO, 0.2-0.4 parts of TiO2, 0.4-0.5 parts of Sb2O3, 0.35-0.45 parts of SnO, 1.1-1.5 Part V2O5。
Preferably, raw material includes: 57 parts of Fe by weight2O3, 3.5 parts of NiO, 25 parts of ZnO, 37 parts of MnO, 6 parts of Mn3O4、 2 parts of CaO, 0.3 part of TiO2, 0.45 part of Sb2O3, 0.4 part of SnO, 1.3 parts of V2O5。
The invention also provides a kind of preparation methods of high resistivity soft magnetic ferrite, include the following steps:
S1, Fe is weighed2O3、NiO、ZnO、MnO、Mn3O4Principal component mixture is mixed to obtain, solubilizer carries out ball milling, spraying dry Dry, pre-burning obtains Preburning material；
S2, CaO, TiO are added into Preburning material2、Sb2O3、SnO、V2O5Mixture, solubilizer ball milling is dry, obtains Pellet；
S3, it after particulate material is pressed, is sintered, it is cooling, obtain high resistivity soft magnetic ferrite.
Preferably, in S1, Fe is weighed2O3、NiO、ZnO、MnO、Mn3O4Principal component mixture is mixed to obtain, water for ball milling 3- is added 6h, spray drying, pre-burning 4-7h, obtains Preburning material at a temperature of being subsequently placed in 800-950 DEG C.
Preferably, in S2, CaO, TiO are added into Preburning material2、Sb2O3、SnO、V2O5Mixture, add water for ball milling 6- 10h, dry 60-100min, obtains particulate material at 110-130 DEG C.
Preferably, in S3, by particulate material after pressure maintaining 5-10min is formed under 180-200MPa pressure, with 5-8 DEG C/ The speed of min is warming up to 1100-1250 DEG C and keeps the temperature 7-10h and is sintered, cooling, obtains high resistivity soft magnetic ferrite material Material.
The invention also provides a kind of purposes of high resistivity soft magnetic ferrite, can be used for preparing ferrite magnetic Core.
The present invention is by using Fe2O3、NiO、ZnO、MnO、Mn3O4Combination is used as principal component, and selects suitable proportion, Again by ball milling, sintering and etc. after so that material obtains resistivity, eddy-current loss, coercivity, the physical chemistry such as power loss Performance, NiO, ZnO, MnO, Mn3O4With Fe2O3Collocation uses, and effectively reduces Fe2+And Fe3+Between electron transfer, improve electricity Resistance rate also makes material initial permeability with higher and saturation magnetic strength to reduce material loss；The present invention and by adding Add suitable CaO, TiO2、Sb2O3、SnO、V2O5Equal additives and principal component, which are used cooperatively, can reach the effect for improving material property Fruit also significantly reduces soft magnetic ferrite power loss, realizes height while improving the magnetic conductivity of soft magnetic ferrite Performance soft magnetic ferrite；Wherein, TiO2And Sb2O3It can partially enter in ferrite lattice, reduce the obstruction of domain wall displacement, and can Grain size and more uniform, promotion domain wall displacement are controlled, and then the loss of material can be reduced；CaO, SnO can be enriched in crystal boundary, To improve resistivity, magnetic loss, CaO, TiO are reduced2、Sb2O3、SnO、V2O5Compound addition can promote high resistivity grain boundary layer Formation, further increase resistivity of material, i.e., reduce core loss in its application, expand its application range.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of high resistivity soft magnetic ferrite, raw material include: 70 parts of Fe by weight2O3, 1 part of NiO, 30 parts ZnO, 30 parts of MnO, 9 parts of Mn3O4, 1 part of CaO, 0.5 part of TiO2, 0.2 part of Sb2O3, 0.6 part of SnO, 0.5 part of V2O5。
The preparation method of the high resistivity soft magnetic ferrite, includes the following steps:
S1, Fe is weighed2O3、NiO、ZnO、MnO、Mn3O4Principal component mixture is mixed to obtain, a small amount of water for ball milling 6h is added, it is spraying dry Dry, pre-burning 7h, obtains Preburning material at a temperature of being subsequently placed in 800 DEG C；
S2, CaO, TiO are added into Preburning material2、Sb2O3、SnO、V2O5Mixture, add a small amount of solvent ball milling 6h, 130 Dry 60min, obtains particulate material at DEG C；
S3, particulate material after pressure maintaining 5min is formed under 200MPa pressure, is warming up to 1100 with the speed of 8 DEG C/min DEG C and keep the temperature 10h and be sintered, it is cooling, obtain high resistivity soft magnetic ferrite.
Embodiment 2
A kind of high resistivity soft magnetic ferrite, raw material include: 45 parts of Fe by weight2O3, 5 parts of NiO, 20 parts ZnO, 42 parts of MnO, 3 parts of Mn3O4, 4 parts of CaO, 0.1 part of TiO2, 0.7 part of Sb2O3, 0.2 part of SnO, 2.0 parts of V2O5。
The preparation method of the high resistivity soft magnetic ferrite, includes the following steps:
S1, Fe is weighed2O3、NiO、ZnO、MnO、Mn3O4Principal component mixture is mixed to obtain, a small amount of water for ball milling 3h is added, it is spraying dry Dry, pre-burning 4h, obtains Preburning material at a temperature of being subsequently placed in 950 DEG C；
S2, CaO, TiO are added into Preburning material2、Sb2O3、SnO、V2O5Mixture, add a small amount of solvent ball milling 10h, Dry 100min, obtains particulate material at 110 DEG C；
S3, particulate material after pressure maintaining 10min is formed under 180MPa pressure, is warming up to the speed of 5 DEG C/min It 1250 DEG C and keeps the temperature 7h and is sintered, it is cooling, obtain high resistivity soft magnetic ferrite.
Embodiment 3
A kind of high resistivity soft magnetic ferrite, raw material include: 65 parts of Fe by weight2O3, 2 parts of NiO, 27 parts ZnO, 33 parts of MnO, 8 parts of Mn3O4, 1.5 parts of CaO, 0.45 part of TiO2, 0.3 part of Sb2O3, 0.5 part of SnO, 0.8 part of V2O5。
The preparation method of the high resistivity soft magnetic ferrite, includes the following steps:
S1, Fe is weighed2O3、NiO、ZnO、MnO、Mn3O4Principal component mixture is mixed to obtain, a small amount of water for ball milling 4.5h is added, it is spraying Dry, pre-burning 5.5h, obtains Preburning material at a temperature of being subsequently placed in 880 DEG C；
S2, CaO, TiO are added into Preburning material2、Sb2O3、SnO、V2O5Mixture, add a small amount of solvent ball milling 8h, 120 Dry 80min, obtains particulate material at DEG C；
S3, particulate material after pressure maintaining 7.5min is formed under 190MPa pressure, is warming up to the speed of 6.5 DEG C/min It 1180 DEG C and keeps the temperature 8.5h and is sintered, it is cooling, obtain high resistivity soft magnetic ferrite.
Embodiment 4
A kind of high resistivity soft magnetic ferrite, raw material include: 50 parts of Fe by weight2O3, 4.5 parts of NiO, 22 parts ZnO, 40 parts of MnO, 4 parts of Mn3O4, 3 parts of CaO, 0.15- parts of TiO2, 0.6 part of Sb2O3, 0.25 part of SnO, 0.8-1.7 parts of V2O5。
The preparation method of the high resistivity soft magnetic ferrite is the same as embodiment 3.
Embodiment 5
A kind of high resistivity soft magnetic ferrite, raw material include: 61 parts of Fe by weight2O3, 2.5 parts of NiO, 26 parts ZnO, 35 parts of MnO, 7 parts of Mn3O4, 1.7 parts of CaO, 0.4 part of TiO2, 0.4 part of Sb2O3, 0.45 part of SnO, 1.1 parts of V2O5。
The preparation method of the high resistivity soft magnetic ferrite is the same as embodiment 3.
Embodiment 6
A kind of high resistivity soft magnetic ferrite, raw material include: 54 parts of Fe by weight2O3, 4 parts of NiO, 23 parts ZnO, 39 parts of MnO, 5 parts of Mn3O4, 2.5 parts of CaO, 0.2 part of TiO2, 0.5 part of Sb2O3, 0.35 part of SnO, 1.5 parts of V2O5。
The preparation method of the high resistivity soft magnetic ferrite is the same as embodiment 3.
Embodiment 7
A kind of high resistivity soft magnetic ferrite, raw material include: 57 parts of Fe by weight2O3, 3.5 parts of NiO, 25 parts ZnO, 37 parts of MnO, 6 parts of Mn3O4, 2 parts of CaO, 0.3 part of TiO2, 0.45 part of Sb2O3, 0.4 part of SnO, 1.3 parts of V2O5。
The preparation method of the high resistivity soft magnetic ferrite is the same as embodiment 3.
Comparative example 1
Do not add Sb2O3, SnO, other conditions are identical with embodiment 7.
Test example 1
5-7 of the embodiment of the present invention and the soft magnetic ferrite of comparative example 1 are subjected to specific performance test, test knot respectively Fruit is shown in Table 1.
Table 1
Project Embodiment 5 Embodiment 6 Embodiment 7 Comparative example 1
Initial permeability 3950 3900 3965 3185
Saturation flux density (mT) 408 405 409 365
Coercivity (A/m) 7.6 7.4 7.7 6.0
Resistivity (Ω m) 1.56×104 1.55×104 1.61×104 1.23×104
As can be seen from Table 1, by being compared with the performance test results of comparative example, soft magnetic ferrite of the invention Initial permeability, saturation flux density, coercivity, resistivity are higher, have significant effect.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (9)

1. a kind of high resistivity soft magnetic ferrite, which is characterized in that its raw material includes: 45-70 parts of Fe by weight2O3、1- 5 parts NiO, 20-30 parts ZnO, 30-42 parts MnO, 3-9 parts of Mn3O4, 1-4 parts of CaO, 0.1-0.5 parts of TiO2, 0.2-0.7 parts of Sb2O3、 0.2-0.6 parts of SnO, 0.5-2.0 parts of V2O5。
2. high resistivity soft magnetic ferrite according to claim 1, which is characterized in that its raw material includes: by weight 50-65 parts of Fe2O3, 2-4.5 parts NiO, 22-27 parts ZnO, 33-40 parts MnO, 4-8 parts of Mn3O4, 1.5-3 parts of CaO, 0.15-0.45 Part TiO2, 0.3-0.6 parts of Sb2O3, 0.25-0.5 parts of SnO, 0.8-1.7 parts of V2O5。
3. high resistivity soft magnetic ferrite according to claim 1, which is characterized in that its raw material includes: by weight 54-61 parts of Fe2O3, 2.5-4 parts NiO, 23-26 parts ZnO, 35-39 parts MnO, 5-7 parts of Mn3O4, 1.7-2.5 parts of CaO, 0.2-0.4 Part TiO2, 0.4-0.5 parts of Sb2O3, 0.35-0.45 parts of SnO, 1.1-1.5 parts of V2O5。
4. high resistivity soft magnetic ferrite according to claim 1, which is characterized in that its raw material includes: by weight 57 parts of Fe2O3, 3.5 parts of NiO, 25 parts of ZnO, 37 parts of MnO, 6 parts of Mn3O4, 2 parts of CaO, 0.3 part of TiO2, 0.45 part of Sb2O3, 0.4 part SnO, 1.3 parts of V2O5。
5. a kind of preparation method of any one of -4 high resistivity soft magnetic ferrites according to claim 1, feature exist In including the following steps:
S1, Fe is weighed2O3、NiO、ZnO、MnO、Mn3O4Principal component mixture is mixed to obtain, solubilizer carries out ball milling, is spray-dried, in advance It burns, obtains Preburning material；
S2, CaO, TiO are added into Preburning material2、Sb2O3、SnO、V2O5Mixture, solubilizer ball milling is dry, obtains particle Material；
S3, it after particulate material is pressed, is sintered, it is cooling, obtain high resistivity soft magnetic ferrite.
6. the preparation method of high resistivity soft magnetic ferrite according to claim 5, which is characterized in that in S1, weigh Fe2O3、NiO、ZnO、MnO、Mn3O4Principal component mixture is mixed to obtain, water for ball milling 3-6h is added, is spray-dried, is subsequently placed in 800- Pre-burning 4-7h, obtains Preburning material at a temperature of 950 DEG C.
7. the preparation method of high resistivity soft magnetic ferrite according to claim 5, which is characterized in that in S2, to pre- CaO, TiO are added in imitation frosted glass2、Sb2O3、SnO、V2O5Mixture, add water for ball milling 6-10h, the dry 60- at 110-130 DEG C 100min obtains particulate material.
8. the preparation method of high resistivity soft magnetic ferrite according to claim 5, which is characterized in that in S3, general Pellet is warming up to 1100-1250 with the speed of 5-8 DEG C/min after pressure maintaining 5-10min is formed under 180-200MPa pressure DEG C and keep the temperature 7-10h and be sintered, it is cooling, obtain high resistivity soft magnetic ferrite.
9. a kind of purposes of any one of -8 high resistivity soft magnetic ferrites according to claim 1, which is characterized in that institute Stating high resistivity soft magnetic ferrite can be used for preparing FERRITE CORE.
CN201811185263.9A 2018-10-11 2018-10-11 A kind of high resistivity soft magnetic ferrite and its preparation method and application Withdrawn CN109369167A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111848147A (en) * 2020-07-17 2020-10-30 苏州天源磁业股份有限公司 NiCuZn ferrite composition and preparation method and application thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111848147A (en) * 2020-07-17 2020-10-30 苏州天源磁业股份有限公司 NiCuZn ferrite composition and preparation method and application thereof
CN111848147B (en) * 2020-07-17 2022-09-06 苏州天源磁业股份有限公司 NiCuZn ferrite composition and preparation method and application thereof

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