CN106145918A - A kind of preparation method of high-performance permanent-magnet ferrite - Google Patents
A kind of preparation method of high-performance permanent-magnet ferrite Download PDFInfo
- Publication number
- CN106145918A CN106145918A CN201610527418.7A CN201610527418A CN106145918A CN 106145918 A CN106145918 A CN 106145918A CN 201610527418 A CN201610527418 A CN 201610527418A CN 106145918 A CN106145918 A CN 106145918A
- Authority
- CN
- China
- Prior art keywords
- permanent
- preparation
- magnet ferrite
- ferrite
- performance permanent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—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
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/6261—Milling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3241—Chromium oxides, chromates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3275—Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
Abstract
The preparation method of a kind of high-performance permanent-magnet ferrite, is the ball milling stage at existing manufacture permanent-magnet ferrite, the active carbonic acid strontium of use existing in formulation material is replaced with carborundum and the mixture of common strontium carbonate.The inventive method achieves the stability keeping magnetic property in broader temperature range, can reach the magnetic property effect identical with adding active carbonic acid strontium, formulation material cost at least declines 300 yuan/ton simultaneously, the production cost reduced greatly, improves the market competitiveness.
Description
Technical field
The present invention relates to the preparation method of a kind of permanent-magnet ferrite, be specifically related to the preparation of a kind of high-performance permanent-magnet ferrite
Method.
Background technology
Along with social development, the market competition is more and more fierce, is affected by store financial crisis, and manufacturing industry starts to go down hill
Road, in order to reduce operation cost of enterprises, improves the market competitiveness, production cost is controlled requirement the highest.
Our company permanent-magnet ferrite formulation material cost relative magnetism material leading enterprise, such as dragon magnetic, Bei Kuang etc., the highest,
In order to improve production pattern, need to reduce the cost of permanent-magnet ferrite, particularly formulation material.
The method of existing reduction permanent-magnet ferrite formulation material cost mainly, subtracts in the ball milling stage manufacturing permanent-magnet ferrite
Few formulation material uses or selects cheap formulation material.What in formulation material, cost was the highest is active carbonic acid strontium (active carbonic acid strontium, i.e.
Strontium carbonate after activated process), if it is possible to reduce and even do not use it, will greatly reduce production cost.But, at this
In the concrete practice of company, if the permanent-magnet ferrite of the existing high-performance trade mark does not use active carbonic acid strontium, and only use common
Strontium carbonate (common strontium carbonate, i.e. without the strontium carbonate of any pretreatment), the coercivity of magnet cannot increase substantially even
Keep.If cost brings the risk that product quality is deteriorated while reducing, it is to lose more than gain for the existence of enterprise
's.
Therefore, in prior art, in the case of reducing formulation material use or selecting cheap formulation material, magnet performance is relatively
Low or magnet stability is the highest, need badly and find one can reduce production cost, can keep again even improving magnet comprehensive
The formulation material of energy.
Summary of the invention
The technical problem to be solved is, overcomes the drawbacks described above that prior art exists, it is provided that one produces into
This is low, the preparation method of the high-performance permanent-magnet ferrite that permanent-magnet ferrite comprehensive magnetic can be good.
The technical solution adopted for the present invention to solve the technical problems is as follows: the preparation side of a kind of high-performance permanent-magnet ferrite
Method, in the ball milling stage of existing manufacture permanent-magnet ferrite, replaces with carborundum by the active carbonic acid strontium of use existing in formulation material
Mixture with common strontium carbonate.Active carbonic acid strontium is a kind of typical additives of permanent-magnet ferrite material, at certain sintering
In the range of warm area, magnet can be made to obtain high remanent magnetism, the combination property of high-coercive force, but price is higher, generally 100,000 yuan/
Ton, and common strontium carbonate price is only 0.6 ten thousand yuan/ton.Common strontium carbonate decomposes becomes strontium oxide, can play compact ferrite and make
With, when n ＜ 6(n is Fe2O3Mol ratio with SrO) time, superfluous strontium oxide has promotion ferrite solid state reaction, promotes that crystal grain is long
Big effect, strontium carbonate can sinter after adding in wider sintering temperature；Silicon-carbide particle can pin down dislocation when high temperature
Motion, is formed " domain wall pinning ", improves coercivity, suppresses ferrite crystal grains to grow up simultaneously, increase single domain ratio in sintering process
Example, improves coercivity.The present inventor studies discovery, when using the carborundum mixture with common strontium carbonate as formula additive
Time, can further improve the combination property of permanent-magnet ferrite.
Further, the addition of described carborundum and common strontium carbonate mixture is preferably permanent ferrite prefiring material quality
0.4～0.8%.The addition of described mixture is too high or too low, and permanent-magnet ferrite combination property can be caused to have declined.
Further, in the mixture of described carborundum and common strontium carbonate, carborundum is excellent with the mass ratio of common strontium carbonate
Elect 1:2.5～3.5 as.Present inventor is found by experiment that, common strontium carbonate consumption is too high or too low, and permanent-magnet ferrite is comprehensive
Can all can decrease.Owing to common strontium carbonate price is only 0.6 ten thousand yuan/ton, carborundum price is only 10,000 yuan/ton, formulation material
Integrated cost the most about 700 yuan/ton in prepared by permanent-magnet ferrite.
Further, the concrete operations of the preparation method of described high-performance permanent-magnet ferrite are: by permanent ferrite prefiring material,
The mixture of carborundum and common strontium carbonate and other formulation material are placed in ball mill, add water, ball milling, filter；Filtration is precipitated
After slip inject mould, under magnetic field condition, extrusion forming is molding green compact；Molding green compact are sintered, polishing, i.e.
Become.
In the inventive method, the cake of preferred diameter of phi 30.1mm of shape of the molding green compact of described extrusion forming.
Further, the addition of other formulation material described is the 2～3% of permanent ferrite prefiring material quality.Formulation material adds
Amount too much will improve production cost, and addition is too low will cause magnetic property to be unable to reach Expected Results.
Further, other formulation material described is made up of following components and weight portion: calcium carbonate 3～5 parts, quartz sand 1～2
Part, chromium oxide 2～4 parts, cobalt sesquioxide 1～3 parts.Described formulation material is all to obtain higher permanent magnetic ferrite residual magnetization, coercive
On the basis of power equimagnetic performance indications, consider that production cost carries out proportioning interpolation simultaneously.
Further, the amount added water described in is 1.5～2.5 times of permanent ferrite prefiring material quality.The ball milling water yield is with permanent magnetism
Ferrite prefiring material mass concentration is added more than 40%, considers that ball milling inventory not can exceed that ball mill container volume simultaneously
2/3。
Further, the particle mean size being milled to slip is 0.6～1.0 μm.If particle mean size is too small, molding will be caused to be stranded
Difficulty, if particle mean size is excessive, can substantially reduce magnet coercivity.
Further, the moisture content filtering extremely precipitation is 32～35wt%.If moisture content is too high, size mistake after sintering will be caused
Little, affect grinding, if moisture content is too low, slip mobility is poor, affects green compact compacting.
Further, the intensity in described magnetic field is 500～600kA/m；Pressurization pressure be 13～18MPa, the time be 60～
80s。
Further, the temperature of described sintering is 1170～1190 DEG C, and the time of sintering is 100～150min, the speed of intensification
Rate is 2～4 DEG C/min.Higher temperature sintering can obtain high remanent magnetism, the permanent-magnet ferrite of low-coercivity performance, and lower temperature burns
Knot can obtain high-coercive force, the permanent-magnet ferrite of low remanent magnetism performance, and sintering temperature can regulate and control according to specific needs.
Having the beneficial effect that by replacing active carbonic acid with the mixture of carborundum and common strontium carbonate of the inventive method
Strontium, it is achieved that keep the stability of magnetic property in broader temperature range, can reach the magnetic identical with adding active carbonic acid strontium
The impact of performance, formulation material cost at least declines 300 yuan/ton simultaneously, greatly reduces production cost, improves the market competition
Power.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
The permanent ferrite prefiring material that the embodiment of the present invention, comparative example are used is to be had by ZMS-7H(Zhejiang An Te magnetic material
Limit company) with HMS-6(Wuhan Steel Group Refractory Materials Co., Ltd.) with the mass ratio mixing gained of 1:1；The present invention
The strontium carbonate that embodiment is used is purchased from Wuhan Steel Group Refractory Materials Co., Ltd.；Comparative example of the present invention is used
Active carbonic acid strontium is purchased from the Miluo River source of students Chemical Co., Ltd.；Other chemical reagent used, if no special instructions, all by often
Rule are either commercially available.
Embodiment 1～3
In embodiment 1～3, respectively by mixture (each embodiment of 500g permanent ferrite prefiring material, carborundum and strontium carbonate
Consumption refers to table 1), 4g calcium carbonate, 1.5g quartz sand, 3g chromium oxide and 2g cobalt sesquioxide are placed in ball mill, add water
1000g, is milled to the slip that particle mean size is 0.8 μm, and it is 33wt% that the slurry filtration that ball milling is good is precipitated to water content；Incited somebody to action
Slip after filter precipitation injects mould, is 530kA/m in magnetic field intensity, and under conditions of pressure is 15Mpa, pressurization 65s is shaped to
The round pie molding green compact of diameter of phi 30.1mm；Molding green compact are put in sintering electrical kiln, be 3 DEG C/min with heating rate,
Under 1170～1190 DEG C (each embodiment temperature refers to table 1), sinter 120min, by the two surface mill up and down of the cake through oversintering
Cut polishing, obtain permanent-magnet ferrite.
Use TYU-2000 type auto measurement equipment for magnetic material, the magnetic property of obtained product is tested, test
The results are shown in Table 1.
Table 1 embodiment 1～3 gained permanent-magnet ferrite magnetic property tables of data
Comparative example 1～3
Comparative example 1～3 differs only in embodiment 1～3: the carborundum+strontium carbonate mixture that will add when ball milling, all
Replace with active carbonic acid strontium (each comparative example consumption refers to table 2).Remaining corresponding identical with embodiment 1～3.
Use TYU-2000 type auto measurement equipment for magnetic material, the magnetic property of obtained product is tested, survey
Test result sees table 2.
Table 2 comparative example 1～3 gained permanent-magnet ferrite magnetic property tables of data
Table 1,2 carries out contrast understand, embodiment 1～3 substituted for active carbonic acid strontium gained forever with carborundum+common strontium carbonate
The magnetic property of magnetic ferrites is held essentially constant, but, the cost of carborundum is 10,000 yuan/ton, and the cost of common strontium carbonate is
0.6 ten thousand yuan/ton, and the cost of active carbonic acid strontium is 100,000 yuan/ton, therefore, according to the consumption of formulation material in the inventive method, system
The formulation material cost of standby permanent-magnet ferrite at least can decline 300 yuan/ton.
In sum, the inventive method is by with the mixture replacing active carbonic acid strontium of carborundum and common strontium carbonate, dropping
Low production cost, maintains preferable permanent-magnet ferrite comprehensive magnetic energy.
Claims (10)
1. the preparation method of a high-performance permanent-magnet ferrite, it is characterised in that: on the ball milling rank of existing manufacture permanent-magnet ferrite
Section, replaces with carborundum and the mixture of common strontium carbonate by the active carbonic acid strontium of use existing in formulation material.
The preparation method of high-performance permanent-magnet ferrite the most according to claim 1, it is characterised in that: described carborundum is with common
The addition of strontium carbonate mixture is the 0.4～0.8% of permanent ferrite prefiring material quality.
The preparation method of high-performance permanent-magnet ferrite the most according to claim 1 or claim 2, it is characterised in that: described carborundum and
In the mixture of common strontium carbonate, carborundum is 1:2.5～3.5 with the mass ratio of common strontium carbonate.
4. according to the preparation method of the described high-performance permanent-magnet ferrite of one of claims 1 to 3, it is characterised in that concrete operations
For: the mixture of permanent ferrite prefiring material, carborundum and common strontium carbonate is placed in ball mill with other formulation material, adds
Water, ball milling, filters；Slip after filtering precipitation injects mould, and under magnetic field condition, extrusion forming is molding green compact；To become
Type green compact are sintered, polishing,.
The preparation method of high-performance permanent-magnet ferrite the most according to claim 4, it is characterised in that: other formulation material described
Addition is the 2～3% of permanent ferrite prefiring material quality.
6. according to the preparation method of high-performance permanent-magnet ferrite described in claim 4 or 5, it is characterised in that other formula described
Material be made up of following components and weight portion: calcium carbonate 3～5 parts, quartz sand 1～2 parts, chromium oxide 2～4 parts, cobalt sesquioxide 1～
3 parts.
7. according to the preparation method of one of claim 4～6 described high-performance permanent-magnet ferrite, it is characterised in that add water described in:
Amount is permanent ferrite prefiring material quality 1.5～2.5 times.
8. according to the preparation method of one of claim 4～7 described high-performance permanent-magnet ferrite, it is characterised in that: it is milled to material
The particle mean size of slurry is 0.6～1.0 μm；The moisture content filtering extremely precipitation is 32～35wt%.
9. according to the preparation method of one of claim 4～8 described high-performance permanent-magnet ferrite, it is characterised in that: described magnetic field
Intensity be 500～600kA/m；The pressure of pressurization is 13～18MPa, and the time is 60～80s.
10. according to the preparation method of one of claim 4～9 described high-performance permanent-magnet ferrite, it is characterised in that: described sintering
Temperature be 1170～1190 DEG C, the time of sintering is 100～150min, and the speed of intensification is 2～4 DEG C/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610527418.7A CN106145918B (en) | 2016-07-06 | 2016-07-06 | A kind of preparation method of high-performance permanent-magnet ferrite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610527418.7A CN106145918B (en) | 2016-07-06 | 2016-07-06 | A kind of preparation method of high-performance permanent-magnet ferrite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106145918A true CN106145918A (en) | 2016-11-23 |
| CN106145918B CN106145918B (en) | 2019-08-09 |
Family
ID=58061440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610527418.7A Active CN106145918B (en) | 2016-07-06 | 2016-07-06 | A kind of preparation method of high-performance permanent-magnet ferrite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106145918B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106673637A (en) * | 2016-12-14 | 2017-05-17 | 湖南航天磁电有限责任公司 | Permanent magnetic ferrite preparation method with improved formula materials |
| CN107954705A (en) * | 2017-12-05 | 2018-04-24 | 湖南航天磁电有限责任公司 | A kind of manufacturing technique method of high-performance permanent-magnet ferrite Preburning material |
| CN111960816A (en) * | 2020-08-27 | 2020-11-20 | 安徽万磁电子有限公司 | Preparation process of permanent magnetic ferrite |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005259751A (en) * | 2004-03-09 | 2005-09-22 | Neomax Co Ltd | Ferrite magnet and its manufacturing method |
| CN104051110A (en) * | 2014-06-24 | 2014-09-17 | 铜陵三佳变压器有限责任公司 | Cobalt-based ferrite core materials |
| CN104064311A (en) * | 2014-06-24 | 2014-09-24 | 安徽皖宏电气设备有限公司 | Silicon carbide-based ferrite magnetic core material for transformer |
| CN104129982A (en) * | 2014-07-18 | 2014-11-05 | 郭永志 | Preparation method of ferrite composite material |
| CN104261811A (en) * | 2014-04-15 | 2015-01-07 | 横店集团东磁股份有限公司 | High-performance permanent magnetic ferrite and manufacturing method thereof |
| CN104557011A (en) * | 2015-01-15 | 2015-04-29 | 安徽龙磁科技股份有限公司 | Ferrite core material for communication |
-
2016
- 2016-07-06 CN CN201610527418.7A patent/CN106145918B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005259751A (en) * | 2004-03-09 | 2005-09-22 | Neomax Co Ltd | Ferrite magnet and its manufacturing method |
| CN104261811A (en) * | 2014-04-15 | 2015-01-07 | 横店集团东磁股份有限公司 | High-performance permanent magnetic ferrite and manufacturing method thereof |
| CN104051110A (en) * | 2014-06-24 | 2014-09-17 | 铜陵三佳变压器有限责任公司 | Cobalt-based ferrite core materials |
| CN104064311A (en) * | 2014-06-24 | 2014-09-24 | 安徽皖宏电气设备有限公司 | Silicon carbide-based ferrite magnetic core material for transformer |
| CN104129982A (en) * | 2014-07-18 | 2014-11-05 | 郭永志 | Preparation method of ferrite composite material |
| CN104557011A (en) * | 2015-01-15 | 2015-04-29 | 安徽龙磁科技股份有限公司 | Ferrite core material for communication |
Non-Patent Citations (1)
| Title |
|---|
| 杨妍林: "高档永磁铁氧体预烧料制备技术的应用研究", 《中国优秀博硕士学位论文全文数据库（硕士） 工程科技Ⅱ辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106673637A (en) * | 2016-12-14 | 2017-05-17 | 湖南航天磁电有限责任公司 | Permanent magnetic ferrite preparation method with improved formula materials |
| CN107954705A (en) * | 2017-12-05 | 2018-04-24 | 湖南航天磁电有限责任公司 | A kind of manufacturing technique method of high-performance permanent-magnet ferrite Preburning material |
| CN111960816A (en) * | 2020-08-27 | 2020-11-20 | 安徽万磁电子有限公司 | Preparation process of permanent magnetic ferrite |
| CN111960816B (en) * | 2020-08-27 | 2022-04-19 | 安徽万磁电子有限公司 | Preparation process of permanent magnetic ferrite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106145918B (en) | 2019-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101844914B (en) | Magnetoplumbate-type permanent magnetic ferrite and manufacturing method thereof | |
| CN104230323B (en) | M type calcium lanthanum cobalt permanent-magnet ferrite and preparation method thereof | |
| Mansour et al. | Influence of La doping and synthesis method on the properties of CoFe2O4 nanocrystals | |
| CN104261811A (en) | High-performance permanent magnetic ferrite and manufacturing method thereof | |
| CN106145918A (en) | A kind of preparation method of high-performance permanent-magnet ferrite | |
| CN103151132B (en) | A kind of neodymium-iron-boron magnetic material with superfine powder and preparation method thereof | |
| CN104446519B (en) | A kind of dispersant improving permanent-magnet ferrite magnetic property and method | |
| CN110156452B (en) | M-type strontium ferrite and preparation method thereof | |
| CN104496457A (en) | Rare earth-containing permanent magnetic ferrite and manufacturing method thereof | |
| WO2022105390A1 (en) | Method for improving electromagnetic performance of permanent magnetic ferrite | |
| CN111099889A (en) | Method for improving magnetic property of permanent magnetic ferrite | |
| CN110105063A (en) | A kind of 5G communication spin Ferrite Material and preparation method thereof | |
| CN106673637A (en) | Permanent magnetic ferrite preparation method with improved formula materials | |
| CN101241793A (en) | Mn-Zn soft magnetic ferrite and production method | |
| CN101656135A (en) | Ferromagnetic oxide powder for magnetic recording and preparation method thereof | |
| CN104446418B (en) | A kind of method improving permanent magnetic ferrite residual magnetization and HCJ | |
| CN110204326A (en) | A kind of ferrite permanent-magnet materials and preparation method thereof with core-shell structure | |
| CN100580823C (en) | Special additive with exchange coupling effect for strengthening residual magnetism | |
| CN109439994B (en) | Grinding material, preparation method, use method and prepared product | |
| CN102167576A (en) | High performance permanent magnetic ferrite magnetic powder and method for preparing same | |
| TWI686356B (en) | Method of fabricating modified ferrite magnetic powder and ferrite magnet | |
| CN108455981A (en) | A kind of permanent-magnet ferrite material and preparation method thereof | |
| CN104788090A (en) | High-performance LiZn ferrite material | |
| TWI693206B (en) | Method of fabricating modified ferrite magnetic powder and method of fabricating ferrite magnet | |
| CN108101527B (en) | High-frequency fine-grain soft magnetic ferrite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |