CN106116561B - Permanent-magnet ferrite magnetic material - Google Patents
Permanent-magnet ferrite magnetic material Download PDFInfo
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- CN106116561B CN106116561B CN201610481844.1A CN201610481844A CN106116561B CN 106116561 B CN106116561 B CN 106116561B CN 201610481844 A CN201610481844 A CN 201610481844A CN 106116561 B CN106116561 B CN 106116561B
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Abstract
This application discloses a kind of permanent-magnet ferrite magnetic materials, include the component of following parts by weight：100 parts of di-iron trioxide, 35 parts of strontium carbonate, boric acid 12 15,10 13 parts of diboron trioxide, 0.5 1 parts of magnesia, 6 10 parts of kaolin, 36 parts of trimethylolpropane, 39 parts of barium monoxide, 13 parts of lanthana, 12 15 parts of neodymia, 28 parts of epoxy resin, 36 parts of zinc oxide, 8 12 parts of quartz, 46 parts of copper oxide, 12 parts of alundum (Al2O3).Permanent-magnet ferrite magnetic material provided by the invention, pass through above-mentioned specific components and weight fraction ratio relationship, so that the permanent-magnet ferrite magnetic material performance prepared is much larger than the performance of common permanent-magnet ferrite magnetic material, wherein magnetic energy product can reach 51.0 53.5kJ/m3, intrinsic coercivity can reach 381.3 388.4kA/m, and remanent magnetization can reach 532.6 553.9mT, significantly promote the magnetic behavior of permanent-magnet ferrite magnetic material.
Description
Technical field
The present disclosure relates generally to technical field of magnetic materials, and in particular to oxidate magnetic material more particularly to permanent magnet
Oxysome magnetic material.
Background technology
Ferrite magnetic material is a kind of composite oxide sintered body nonmetal magnetic material, is generally divided into soft magnetic ferrite
With permanent-magnet ferrite magnetic material.Permanent-magnet ferrite magnetic material includes barium ferrite and strontium ferrite again, and resistivity is high, is belonged to
In semiconductor type, therefore eddy-current loss is small, and coercivity is big, can effectively apply in the magnetic circuit of big air gap, small particularly suitable for making
The permanent magnet of generator and motor.The raw material sources of permanent-magnet ferrite magnetic material are abundant, and technique is uncomplicated, cost
It is low, to have higher cost performance, it is widely used in all kinds of motors of high power, high rotating speed, high torque, such as superior automobile
The fields such as motor, motorcycle starter, household electrical appliance and electric tool motor.Currently, in order to improve permanent-magnet ferrite
Comprehensive magnetic can or improve the characteristic performance of some aspects, and the solution mainly used is to be used for preparing permanent magnetism by improving
The component of ferrite magnetic material and corresponding proportion or improvement prepare the production technology of permanent-magnet ferrite magnetic material.
Chinese invention patent 201410077393.6 (October 14 2015 day for announcing) discloses a kind of high magnetic energy permanent-magnet ferrite material
Material, in terms of parts by weight, including 100-120 parts of di-iron trioxide, 2-4 parts of lanthana, 6-23 parts of silica 1, barium monoxide
3-9 parts of 0.5-1.5 parts, 0.2-0.8 parts of strontium oxide strontia, 15-25 parts of calcium carbonate and magnesium stearate；And preparation process：(1) by three oxygen
Change two iron, lanthana, barium monoxide and strontium oxide strontia and proportionally carry out pre-burning under air, calcined temperature is 1200-1300 DEG C, is waited for
Coarse crushing is carried out after raw material natural cooling；(2) raw material after coarse crushing is mixed with silica, calcium carbonate and magnesium stearate
Afterwards, be added 1-2 times of mixture total weight 3-6 times of water and mixture total weight steel ball, use ball mill be milled to slurry granularity for
0.5-1.0μm；(3) slurry is carried out dehydrating, compression moulding under conditions of pressure is 20MPa, is added simultaneously later
The alignment magnetic field of 5000-8000A/m, obtains green compact；(4) green compact are sintered under Oxygen Condition, sintering temperature 1200-
1300 DEG C, 2-3h, subsequent Temperature fall is kept to obtain Ferrite Material.The high magnetic energy permanent-magnet ferrite material prepared, surplus
The parameter indexes such as magnetic, intrinsic coercivity and maximum magnetic energy product are apparently higher than common Ferrite Material, improve whole magnetic property.
So the component and preparation process that improve for preparing permanent-magnet ferrite magnetic material have become grinding for those skilled in the art
Study carefully hot spot and difficult point.
Invention content
In view of drawbacks described above in the prior art or deficiency, it is intended to provide a kind of permanent-magnet ferrite magnetic improving magnetic behavior
Property material.
The present invention provides a kind of permanent-magnet ferrite magnetic material, includes the component of following parts by weight：Di-iron trioxide 100
Part, 3-5 parts, boric acid 12-15 of strontium carbonate, 10-13 parts of diboron trioxide, 0.5-1 parts of magnesia, 6-10 parts of kaolin, three hydroxyl first
3-6 parts of base propane, 3-9 parts of barium monoxide, 1-3 parts of lanthana, 12-15 parts of neodymia, 2-8 parts of epoxy resin, zinc oxide 13-16
Part, 8-12 parts of quartz, 4-6 parts of copper oxide, 1-2 parts of alundum (Al2O3).
Permanent-magnet ferrite magnetic material provided by the invention passes through the choosing of each component of specific above-mentioned weight fraction ratio
It selects so that the permanent-magnet ferrite magnetic material performance finally prepared is much larger than the performance of common permanent-magnet ferrite magnetic material,
Wherein magnetic energy product can reach 51.0-53.5kJ/m3, intrinsic coercivity can reach 381.3-388.4kA/m, and remanent magnetization can
Reach 532.6-553.9mT, significantly promotes the magnetic behavior of permanent-magnet ferrite magnetic material.
Description of the drawings
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 process flow charts provided in an embodiment of the present invention for preparing permanent-magnet ferrite magnetic material.
Specific implementation mode
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, is illustrated only in attached drawing and invent relevant part.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Embodiment 1
In the present embodiment, permanent-magnet ferrite magnetic material includes the component of following parts by weight：Di-iron trioxide 100
Part, 3 parts of strontium carbonate, 12 parts of boric acid, 10 parts of diboron trioxide, 0.5 part of magnesia, 6 parts of kaolin, 3 parts of trimethylolpropane, oxygen
Change 3 parts of barium, 1 part of lanthana, 12 parts of neodymia, 2 parts of epoxy resin, 13 parts of zinc oxide, 8 parts of quartz, 4 parts of copper oxide, three oxygen
Change 1 part of two aluminium.
Referring to FIG. 1, being specifically included as follows using the method for preparing permanent-magnet ferrite magnetic material as follows in the present embodiment
Step：
Step 1 takes above-mentioned strontium carbonate, boric acid and 50% zinc oxide to be mixed, and heats at 1000 DEG C,
Obtain mixture A；
Mixture A is added in above-mentioned di-iron trioxide, trimethylolpropane, barium monoxide, lanthana and neodymia by step 2
In, uniform stirring, and pre-burning is carried out under air, calcined temperature is 1200 DEG C, and coarse crushing is carried out after raw material natural cooling, is obtained
Mixture B；
Step 3, by above-mentioned diboron trioxide, magnesia, kaolin, epoxy resin, zinc oxide, quartz, copper oxide and
Alundum (Al2O3) is added in mixture B, uniform stirring, and carries out pre-burning under air, and calcined temperature is 1200 DEG C, waits for raw material certainly
Coarse crushing so is carried out after cooling, obtains mixture C；
Step 4 will be added 1-2 times of water, be placed in ball mill and carry out ball milling, be milled to slurry grain size in mixture C
It is 0.8 μm, is then dried in 100 DEG C, obtains mixture D；
Mixture D is placed in Muffle furnace and calcines by step 5, is warming up to 100 DEG C with 14 degree of heating rates per minute, so
Natural cooling cools down afterwards, i.e. permanent-magnet ferrite magnetic material.
Embodiment 2
In the present embodiment, permanent-magnet ferrite magnetic material includes the component of following parts by weight：Di-iron trioxide 100
Part, 3.5 parts of strontium carbonate, 13 parts of boric acid, 11 parts of diboron trioxide, 0.7 part of magnesia, 7 parts of kaolin, 4 parts of trimethylolpropane,
5 parts of barium monoxide, 1.5 parts of lanthana, 13 parts of neodymia, 4 parts of epoxy resin, 14 parts of zinc oxide, 9 parts of quartz, copper oxide 4.5
Part, 1.5 parts of alundum (Al2O3).
Referring to FIG. 1, being specifically included as follows using the method for preparing permanent-magnet ferrite magnetic material as follows in the present embodiment
Step：
Step 1 takes above-mentioned strontium carbonate, boric acid and 50% zinc oxide to be mixed, and heats at 1100 DEG C,
Obtain mixture A；
Mixture A is added in above-mentioned di-iron trioxide, trimethylolpropane, barium monoxide, lanthana and neodymia by step 2
In, uniform stirring, and pre-burning is carried out under air, calcined temperature is 1250 DEG C, and coarse crushing is carried out after raw material natural cooling, is obtained
Mixture B；
Step 3, by above-mentioned diboron trioxide, magnesia, kaolin, epoxy resin, zinc oxide, quartz, copper oxide and
Alundum (Al2O3) is added in mixture B, uniform stirring, and carries out pre-burning under air, and calcined temperature is 1250 DEG C, waits for raw material certainly
Coarse crushing so is carried out after cooling, obtains mixture C；
Step 4 will be added 1-2 times of water, be placed in ball mill and carry out ball milling, be milled to slurry grain size in mixture C
It is 0.9 μm, is then dried in 105 DEG C, obtains mixture D；
Mixture D is placed in Muffle furnace and calcines by step 5, is warming up to 105 DEG C with 15 degree of heating rates per minute, so
Natural cooling cools down afterwards, i.e. permanent-magnet ferrite magnetic material.
Embodiment 3
In the present embodiment, permanent-magnet ferrite magnetic material includes the component of following parts by weight：Di-iron trioxide 100
Part, 4 parts of strontium carbonate, boric acid 14,12 parts of diboron trioxide, 0.8 part of magnesia, 8 parts of kaolin, 5 parts of trimethylolpropane, oxidation
6 parts of barium, 2 parts of lanthana, 13 parts of neodymia, 5 parts of epoxy resin, 4 parts of zinc oxide, 10 parts of quartz, 5 parts of copper oxide, three oxidations
Two 1.5 parts of aluminium.
Referring to FIG. 1, being specifically included as follows using the method for preparing permanent-magnet ferrite magnetic material as follows in the present embodiment
Step：
Step 1 takes above-mentioned strontium carbonate, boric acid and 50% zinc oxide to be mixed, and heats at 1100 DEG C,
Obtain mixture A；
Mixture A is added in above-mentioned di-iron trioxide, trimethylolpropane, barium monoxide, lanthana and neodymia by step 2
In, uniform stirring, and pre-burning is carried out under air, calcined temperature is 1250 DEG C, and coarse crushing is carried out after raw material natural cooling, is obtained
Mixture B；
Step 3, by above-mentioned diboron trioxide, magnesia, kaolin, epoxy resin, zinc oxide, quartz, copper oxide and
Alundum (Al2O3) is added in mixture B, uniform stirring, and carries out pre-burning under air, and calcined temperature is 1250 DEG C, waits for raw material certainly
Coarse crushing so is carried out after cooling, obtains mixture C；
Step 4 will be added 1-2 times of water, be placed in ball mill and carry out ball milling, be milled to slurry grain size in mixture C
It is 1 μm, is then dried in 105 DEG C, obtains mixture D；
Mixture D is placed in Muffle furnace and calcines by step 5, is warming up to 105 DEG C with 15 degree of heating rates per minute, so
Natural cooling cools down afterwards, i.e. permanent-magnet ferrite magnetic material.
Embodiment 4
In the present embodiment, permanent-magnet ferrite magnetic material includes the component of following parts by weight：Di-iron trioxide 100
Part, 5 parts of strontium carbonate, boric acid 15,13 parts of diboron trioxide, 1 part of magnesia, 10 parts of kaolin, 6 parts of trimethylolpropane, oxidation
9 parts of barium, 3 parts of lanthana, 15 parts of neodymia, 8 parts of epoxy resin, 16 parts of zinc oxide, 12 parts of quartz, 6 parts of copper oxide, three oxidations
Two 2 parts of aluminium.
Referring to FIG. 1, being specifically included as follows using the method for preparing permanent-magnet ferrite magnetic material as follows in the present embodiment
Step：
Step 1 takes above-mentioned strontium carbonate, boric acid and 50% zinc oxide to be mixed, and heats at 1200 DEG C,
Obtain mixture A；
Mixture A is added in above-mentioned di-iron trioxide, trimethylolpropane, barium monoxide, lanthana and neodymia by step 2
In, uniform stirring, and pre-burning is carried out under air, calcined temperature is 1300 DEG C, and coarse crushing is carried out after raw material natural cooling, is obtained
Mixture B；
Step 3, by above-mentioned diboron trioxide, magnesia, kaolin, epoxy resin, zinc oxide, quartz, copper oxide and
Alundum (Al2O3) is added in mixture B, uniform stirring, and carries out pre-burning under air, and calcined temperature is 1300 DEG C, waits for raw material certainly
Coarse crushing so is carried out after cooling, obtains mixture C；
Step 4 will be added 1-2 times of water, be placed in ball mill and carry out ball milling, be milled to slurry grain size in mixture C
It is 1.2 μm, is then dried in 110 DEG C, obtains mixture D；
Mixture D is placed in Muffle furnace and calcines by step 5, is warming up to 110 DEG C with 16 degree of heating rates per minute, so
Natural cooling cools down afterwards, i.e. permanent-magnet ferrite magnetic material.
It is right respectively in order to verify the correlated performance of permanent-magnet ferrite magnetic material prepared by preparation process provided by the invention
The permanent-magnet ferrite magnetic material magnetic performance prepared in embodiment 1- embodiments 4 is tested, and the data such as table 1 are obtained.
Wherein, magnetic energy product unit is kJ/m3, intrinsic coercivity unit is kA/m, and remanent magnetization unit is mT.
Table 1
| Test event | Magnetic energy product | Intrinsic coercivity | Remanent magnetization |
| Embodiment 1 | 51.0 | 381.3 | 542.8 |
| Embodiment 2 | 52.2 | 383.5 | 547.2 |
| Embodiment 3 | 53.5 | 388.4 | 553.9 |
| Embodiment 4 | 32.8 | 386.1 | 532.6 |
As shown in Table 1, the permanent-magnet ferrite magnetic material that preparation process provided by the invention prepares is in magnetic energy product, intrinsic
Sr ferrite material feed powders commonly used in the art are substantially better than in terms of coercivity and remanent magnetization, especially in embodiment 3
Permanent-magnet ferrite magnetic material reach best in this 3 various aspects of performance.Specifically, permanent-magnet ferrite magnetic provided by the invention
Property material on magnetic energy product reach 53.5kJ/m3,388.4kA/m is can reach in intrinsic coercivity, in remanent magnetization
On can reach 553.9mT, considerably enhance the magnetic behavior of permanent-magnet ferrite magnetic material.
Applicants contemplate why permanent-magnet ferrite magnetic material provided by the invention can reach above-mentioned excellent magnetism
It is specific selection that performance, which is because of each component in permanent-magnet ferrite magnetic material provided by the invention, and the respectively content of component
It is also just to be obtained by the test of multiple repetition test.Remaining component selection of the invention and content selection are obviously also non-obvious
, those skilled in the art combine the prior art that can readily occur in absolutely not.Meanwhile it can be seen in conjunction with the embodiment of the present invention
It arrives, preparation method of the invention is designed using five steps, raw material is added by several times in batches, and the percentage being added has special model
It encloses, this technique is adapted with the special proportioning of permanent-magnet ferrite magnetic material component of the present invention, is only used and is used this technique,
It just can guarantee that the smooth sequential of reaction system carries out, it is ensured that finally prepare the superior quality of permanent-magnet ferrite magnetic material.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature
Other technical solutions of arbitrary combination and formation.Such as features described above has similar work(with (but not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (3)
1. a kind of permanent-magnet ferrite magnetic material, which is characterized in that include the component of following parts by weight：
100 parts of di-iron trioxide, 3-5 parts, boric acid 12-15 of strontium carbonate, 10-13 parts of diboron trioxide, 0.5-1 parts of magnesia are high
Soil 6-10 parts of ridge, 3-6 parts of trimethylolpropane, 3-9 parts of barium monoxide, 1-3 parts of lanthana, 12-15 parts of neodymia, epoxy resin 2-
8 parts, 3-6 parts of zinc oxide, 8-12 parts of quartz, 4-6 parts of copper oxide, 1-2 parts of alundum (Al2O3).
2. permanent-magnet ferrite magnetic material according to claim 1, which is characterized in that include the group of following parts by weight
Point：
100 parts of di-iron trioxide, 4 parts of strontium carbonate, boric acid 14,12 parts of diboron trioxide, 0.8 part of magnesia, 8 parts of kaolin, three
5 parts of hydroxymethyl-propane, 6 parts of barium monoxide, 2 parts of lanthana, 13 parts of neodymia, 5 parts of epoxy resin, 4 parts of zinc oxide, quartz 10
Part, 5 parts of copper oxide, 1.5 parts of alundum (Al2O3).
3. permanent-magnet ferrite magnetic material according to claim 1, which is characterized in that the permanent-magnet ferrite magnetic material
Magnetic energy product be 51.0-53.5kJ/m3, intrinsic coercivity 381.3-388.4kA/m, remanent magnetization 532.6-
553.9mT。
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