CN109279890A - The preparation method of magnetic electric compound material - Google Patents
The preparation method of magnetic electric compound material Download PDFInfo
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- CN109279890A CN109279890A CN201811110033.6A CN201811110033A CN109279890A CN 109279890 A CN109279890 A CN 109279890A CN 201811110033 A CN201811110033 A CN 201811110033A CN 109279890 A CN109279890 A CN 109279890A
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 49
- 238000003746 solid phase reaction Methods 0.000 claims abstract description 29
- 239000002002 slurry Substances 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 20
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000696 magnetic material Substances 0.000 claims abstract description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims abstract description 8
- 239000004615 ingredient Substances 0.000 claims abstract description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 8
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000919 ceramic Substances 0.000 claims abstract description 7
- UBEWDCMIDFGDOO-UHFFFAOYSA-N cobalt(II,III) oxide Inorganic materials [O-2].[O-2].[O-2].[O-2].[Co+2].[Co+3].[Co+3] UBEWDCMIDFGDOO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000000498 ball milling Methods 0.000 claims description 19
- 238000005245 sintering Methods 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 8
- 238000010345 tape casting Methods 0.000 claims description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 235000019441 ethanol Nutrition 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000004014 plasticizer Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 17
- 239000011812 mixed powder Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000004677 Nylon Substances 0.000 description 5
- 229920001778 nylon Polymers 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 229960000935 dehydrated alcohol Drugs 0.000 description 3
- 229960004756 ethanol Drugs 0.000 description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011236 particulate material Substances 0.000 description 2
- 230000005501 phase interface Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
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- 239000003990 capacitor Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
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- 238000005253 cladding Methods 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
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- 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
- C04B35/453—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 zinc, tin, or bismuth oxides or solid solutions thereof with other oxides, e.g. zincates, stannates or bismuthates
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- 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
- C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
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- 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
- C04B35/62625—Wet mixtures
- C04B35/6264—Mixing media, e.g. organic solvents
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
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- 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
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- 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
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3262—Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
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- C04B2235/3284—Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates or oxide forming salts thereof
Abstract
The invention discloses a kind of preparation methods of magnetic electric compound material.The preparation method includes: that the raw material of following piezoelectric ceramics is carried out ingredient according to parts by weight, carries out solid phase reaction, and be prepared into the first powder: Fe2O3: 15-20 parts, Bi2O3: 52-58 parts, BaCO3: 15-18 parts, TiO2: 5-8 parts, ZnO:0.2-0.7 parts, MnO2: 0.1-0.3 parts；The raw material of following magnetic material is subjected to ingredient according to parts by weight, carries out solid phase reaction, and be prepared into the second powder: Fe2O3: 61-66 parts, NiO:8-20 parts；CuO:4.5-6.5 parts, ZnO:4-20 parts, Bi2O3: 0.5-2 parts, Co3O4: 0.1-0.5 parts；First slurry is prepared into primary diaphragm, the second slurry is prepared into secondary diaphragm, and primary diaphragm and secondary diaphragm through-thickness are pressed together, to form compound film sheet；Compound film sheet is subjected to dumping processing；Compound film sheet is sintered, to form magnetic electric compound material.
Description
Technical field
The present invention relates to technical field of material, more particularly, to a kind of preparation method of magnetic electric compound material.
Background technique
Demand with people to electronic product, electronic component are sent out towards miniaturization, multi-functional and high stability direction
Exhibition.Realize that multiple functions have become a kind of new developing direction in a kind of element.This element is usually composite material.Example
Such as, while there is the double property of capacitor, inductance or the Composite Doubles materials such as ferroelectric-ferromagnetic, piezoelectricity-is ferromagnetic.This composite material is used for
Prepare chip-type filter, electromagnetic sensor, piezoelectric transducer etc..
However, the problems such as different medium interlayer is mismatched there is sintering shrinkage, densification rate, leads to different function
Material can not carry out cofiring.It is generally necessary to the material of various functions is first prepared molding respectively, then, then by different function
Together, the preparation process for leading to composite material is complicated, and yield rate is low for Material cladding.
Accordingly, it is desirable to provide a kind of new technical solution, to solve the above technical problems.
Summary of the invention
It is an object of the present invention to provide a kind of new solutions of the preparation method of magnetic electric compound material.
According to the first aspect of the invention, a kind of preparation method of magnetic electric compound material is provided.The preparation method includes:
The raw material of following piezoelectric ceramics is subjected to ingredient according to parts by weight, carries out solid phase reaction, and be prepared into the first powder: Fe2O3: 15-
20 parts, Bi2O3: 52-58 parts, BaCO3: 15-18 parts, TiO2: 5-8 parts, ZnO:0.2-0.7 parts, MnO2: 0.1-0.3 parts；It will be following
The raw material of magnetic material carries out ingredient according to parts by weight, carries out solid phase reaction, and be prepared into the second powder: Fe2O3: 61-66 parts,
NiO:8-20 parts；CuO:4.5-6.5 parts, ZnO:4-20 parts, Bi2O3: 0.5-2 parts, Co3O4: 0.1-0.5 parts；Liquid addition is added
First powder is prepared into the first slurry by agent, and the second powder is prepared into the second slurry；First slurry is prepared into primary diaphragm,
Second slurry is prepared into secondary diaphragm, and primary diaphragm and secondary diaphragm through-thickness are pressed together, it is multiple to be formed
Close diaphragm, wherein two surfaces for being parallel to extending direction of the primary diaphragm are respectively arranged with electrode layer；It will be described compound
Diaphragm carries out dumping processing；The compound film sheet is sintered, to form magnetic electric compound material.
Optionally, when preparing the first powder, the temperature of solid phase reaction is 880-930 DEG C.
Optionally, when preparing the second powder, the temperature of solid phase reaction is 880-920 DEG C.
Optionally, first slurry is prepared into the first film strips by the way of tape casting, using etc. static pressure side
First film strips described in multilayer are pressed into the primary diaphragm by formula；And/or
Second slurry is prepared into the second film strips by the way of tape casting, using etc. by the way of static pressure by multilayer
Second film strips are pressed into the secondary diaphragm.
Optionally, at least one of first film strips and described second film strips with a thickness of 20-70 microns.
Optionally, in parts by weight, the liquid additive includes the following substance mixed: PVB:5-8
Part, plasticizer: 2-3 parts, toluene: 30-35 parts, ethyl alcohol: 8-9 parts, isopropanol: 5-7 parts.
Optionally, sintering temperature is 880-930 DEG C, and sintering time is 2-5 hours
Optionally, the primary diaphragm and the secondary diaphragm are at least one, and the primary diaphragm and described
Secondary diaphragm is staggered.
Optionally, the granularity of at least one of first powder and described second powder is 0.6-1.5 microns.
Optionally, in preparing at least one of first powder and second powder, before fixed reaction
Raw material is ground with ball milling is all made of after solid phase reaction, and the granularity for the powder that ball milling obtains after solid phase reaction is small
The granularity for the powder that ball milling obtains before solid phase reaction.
According to one embodiment of the disclosure, which can be realized low temperature co-fired, and processing and fabricating is simple, at
Product rate is high.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the flow chart of the preparation method of magnetic electric compound material according to an embodiment of the invention.
Fig. 2 is magnetic electric compound material structural schematic diagram according to an embodiment of the invention.
Fig. 3 is the cross-sectional view of Fig. 2.
Description of symbols:
11: piezoceramics layer；12: magnetic material layer；13: electrode layer.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
According to one embodiment of the disclosure, a kind of preparation method of magnetic electric compound material is provided.The preparation method packet
It includes:
S1, the raw material of following piezoelectric ceramics is subjected to ingredient according to parts by weight, carries out solid phase reaction, and be prepared into the first powder
Material: Fe2O3: 15-20 parts, Bi2O3: 52-58 parts, BaCO3: 15-18 parts, TiO2: 5-8 parts, ZnO:0.2-0.7 parts, MnO2: 0.1-
0.3 part.
In this step, various raw materials are powder or particulate material.Various raw materials are mixed after matching honest material.For example, logical
Crossing the modes such as mechanical stirring, roller ball mill, planetary ball mill will mix, to form uniform mixed powder.
In one example, mixing is carried out using ball milling.Ball milling can carry out in nylon ball grinder.In order to enable arrive
Mixed powder more finely, more evenly, dehydrated alcohol is added into nylon ball grinder.Those skilled in the art can be according to practical need
The time of ball milling is set.
After the completion of ball milling, first mixed powder is dried, to exclude dehydrated alcohol etc.；Then mixed powder was carried out
Sieve.Minus mesh is subjected to solid phase reaction.
In solid phase reaction, various raw materials chemically react on phase interface as reactant, tentatively generation perovskite
Structure.For example, the temperature of solid phase reaction is 880-930 DEG C, the reaction time is 1-4 hours.Under the reaction conditions, the pressure of formation
The piezoelectric coefficient d 33 of electroceramics material is 100-300.
After solid phase reaction, the mixed powder after solid phase reaction is subjected to fine grinding.The purpose of fine grinding is to obtain suitable grain
First powder of degree.The granularity of first powder is less than the granularity of the powder formed when mixing.
For example, fine grinding uses ball milling.Mixed powder after solid phase reaction is added in nylon spherical tank, is then added anhydrous
Ethyl alcohol carries out ball milling.During fine grinding, Ball-milling Time is longer than mixing time, to obtain the smaller powder of granularity.It is complete in ball milling
Powder is dried again, is sieved by Cheng Hou.Minus mesh is the first powder.For example, the granularity of the first powder is that 0.6-1.5 is micro-
Rice.The surface compact for the piezoelectric ceramics that the particle size range is formed, structural strength are high.
S2, the raw material of following magnetic material is subjected to ingredient according to parts by weight, carries out solid phase reaction, and be prepared into the second powder
Material: Fe2O3: 61-66 parts, NiO:8-20 parts；CuO:4.5-6.5 parts, ZnO:4-20 parts, Bi2O3: 0.5-2 parts, Co3O4: 0.1-
0.5 part.
In this step, various raw materials are powder or particulate material.Various raw materials are mixed after matching honest material.For example, logical
It crosses the modes such as mechanical stirring, roller ball mill, planetary ball mill to mix various powders, to form uniform mixed powder.Example
Such as, ball milling can carry out in nylon ball grinder.In order to enable the mixed powder arrived is more finely, more evenly, to nylon ball grinder
Middle addition dehydrated alcohol.Those skilled in the art can be set according to actual needs the time of ball milling.
In solid phase reaction, various raw materials chemically react on phase interface as reactant.For example, solid phase reaction
Temperature is 880-920 DEG C, and the reaction time is 1-4 hours.
Similarly, during preparing the second powder, ball milling pair is all made of before fixed reaction and after solid phase reaction
Raw material is ground.And the granularity for the powder that ball milling obtains after solid phase reaction as previously described is less than ball milling before solid phase reaction
The granularity of obtained powder, this makes subsequent sintering velocity faster, and sintering effect is more preferable.
For example, the granularity of the second powder is 0.6-1.5 microns.The surface compact for the magnetic material that the particle size range is formed,
Structural strength is high.
It will be appreciated by persons skilled in the art that S1 and S2 step is in no particular order, it can carry out or first carry out simultaneously
Any one in two steps.
First powder is prepared into the first slurry by S3, addition liquid additive, and the second powder is prepared into the second slurry.
Liquid additive is respectively in conjunction with the first powder and the second powder, to be prepared into thick the first slurry and
Two slurries.First slurry and the second slurry have the viscosity of setting, so as to be prepared to setting according to actual needs
Shape.
In one example, liquid additive includes the following substance mixed: PVB (polyvinyl butyral):
5-8 parts, plasticizer: 2-3 parts, toluene: 30-35 parts, ethyl alcohol: 8-9 parts, isopropanol: 5-7 parts.The liquid additive can be with first
Powder and the second powder are combined together rapidly, to form the first slurry and the second slurry, and obtained the first slurry and the
The good shape retention of two slurries.
S4, the first slurry is prepared into primary diaphragm, the second slurry is prepared into secondary diaphragm, and by primary diaphragm and
Two diaphragm through-thickness press together, to form compound film sheet.Wherein, two for being parallel to extending direction of primary diaphragm
Surface is respectively arranged with electrode layer 13.Extending direction refers to the long side of diaphragm and the extending direction on the surface where broadside.
In this step, primary diaphragm and secondary diaphragm can be overall structure；Be also possible to by multilayer material be laminated and
At multilayered structure.
In one example, compound film sheet is the multilayered structure being staggered by primary diaphragm and secondary diaphragm.For example, multiple
Closing diaphragm includes a primary diaphragm and a secondary diaphragm；Or
Including a primary diaphragm and two secondary diaphragms, primary diaphragm is located between two secondary diaphragms；Or
Including a secondary diaphragm and two primary diaphragms, secondary diaphragm is located between two primary diaphragms；Or
Compound film sheet includes multiple primary diaphragms and multiple secondary diaphragms.Multiple primary diaphragms and multiple secondary diaphragms alternating
It is staggered.
Those skilled in the art can be set according to actual needs thickness and number of plies of primary diaphragm and secondary diaphragm etc..
Electrode layer 13 can be formed by way of by silver, silver ink firing.For example, in this step, carrying out quilt on two surfaces
Silver.Then during the sintering process by silver ink firing, to form electrode layer 13.
S5, compound film sheet is subjected to dumping processing.
The purpose of dumping is the high-molecular compound removed in compound film sheet, such as liquid additive etc., to avoid to burning
Knot adversely affects.The phosphorus content of high-molecular compound is more, and in oxygen deficiency, burning generates the very strong oxidation of reproducibility
Carbon.Oxide in raw material can be reduced to metal or low oxide by carbon monoxide.Metal or low oxide influence pottery
The color of porcelain, at performances such as porcelain, electrodepositable and polarization.
S6, compound film sheet is sintered, to form magnetic electric compound material.Sintering, which refers to, to be heated to compound film sheet to set
Temperature, and kept the temperature, so that powder becomes the process of dense body.
In embodiment of the disclosure, since the raw material sintering temperature of the raw material of piezoelectric ceramics and magnetic material is close simultaneously
And sintering temperature is lower, so the two can be realized cofiring.During cofiring, due to the contraction of primary diaphragm and secondary diaphragm
Rate is close, densification rate matches therefore can be good at being combined together, to form magnetic electric compound material.As Figure 2-3,
Primary diaphragm forms piezoceramics layer 11 after cofiring, and secondary diaphragm forms magnetic material layer 12 after cofiring.The magnetoelectricity is compound
Material has both the performance of piezoelectric ceramics and magnetic material.
The magnetic electric compound material has lower co-fired temperature, for example, sintering temperature is 880-930 DEG C, sintering time is
2-5 hours, reduce production difficulty.
In addition, the piezoceramic material is lead-free piezoceramic material, there is good environmental-protecting performance.
In one example, it is polarized by two electrode layers 13 to piezoceramics layer 11, so that it obtains piezoelectricity
Energy.For example, polarizing under the polarizing voltage of setting to piezoceramics layer 11.
For example, polarization carries out under the conditions of inert gas shielding.Polarized temperature is 70-150 DEG C, polarizing voltage 3-
5kV/mm。
In other examples, piezoceramics layer 11 directly polarizes under atmospheric environment, can equally make piezoceramics layer
11 have piezoelectric property.
In one example, the first slurry is prepared into the first film strips by the way of tape casting.Using etc. static pressure
The first film strips of multilayer are pressed into primary diaphragm by mode.And/or
The second slurry is prepared into the second film strips by the way of tape casting.Using etc. by the way of static pressure by multilayer second
Film strips are pressed into secondary diaphragm.
In this example embodiment, the first film strips and the second film strips can be cut into the shape of setting according to actual needs.For example,
The strip that is sized, rectangular etc..
The thickness for the film strips that the mode of tape casting is formed is uniform.In one example, in the first film strips and the second film strips
It is at least one with a thickness of 20-70 microns.The thickness range can satisfy the use demand of the diaphragm of different-thickness.
Equal static pressure are that multiple film layers are placed in the closed container for filling with liquid, gradually add by pressure charging system
Pressure, with to film layer surface apply with equal pressure, make its reduced in the case where not changing face shaping it is intermolecular away from
From increasing density and improve the pressure processing method of the physical property of film layer.
In this example embodiment, it waits in static pressure process, pressure 30-60MPa, pressing time is 5-15 minutes, processing temperature
Degree is 20-70 DEG C.Under the processing conditions, the primary diaphragm of formation and the consistency of secondary diaphragm are good, are conducive to subsequent burning
The progress of knot.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of preparation method of magnetic electric compound material, wherein include:
The raw material of following piezoelectric ceramics is subjected to ingredient according to parts by weight, carries out solid phase reaction, and be prepared into the first powder:
Fe2O3: 15-20 parts, Bi2O3: 52-58 parts, BaCO3: 15-18 parts, TiO2: 5-8 parts, ZnO:0.2-0.7 parts, MnO2: 0.1-0.3
Part；
The raw material of following magnetic material is subjected to ingredient according to parts by weight, carries out solid phase reaction, and be prepared into the second powder:
Fe2O3: 61-66 parts, NiO:8-20 parts；CuO:4.5-6.5 parts, ZnO:4-20 parts, Bi2O3: 0.5-2 parts, Co3O4: 0.1-0.5
Part；
Liquid additive is added, the first powder is prepared into the first slurry, the second powder is prepared into the second slurry；
First slurry is prepared into primary diaphragm, the second slurry is prepared into secondary diaphragm, and by primary diaphragm and secondary diaphragm
Through-thickness presses together, to form compound film sheet, wherein two tables for being parallel to extending direction of the primary diaphragm
Face is respectively arranged with electrode layer；
The compound film sheet is subjected to dumping processing；
The compound film sheet is sintered, to form magnetic electric compound material.
2. preparation method according to claim 1, wherein when preparing the first powder, the temperature of solid phase reaction is 880-
930℃。
3. preparation method according to claim 1, wherein when preparing the second powder, the temperature of solid phase reaction is 880-
920℃。
4. preparation method according to claim 1, wherein be prepared into first slurry by the way of tape casting
First film strips, using etc. the first film strips described in multilayer are pressed into the primary diaphragm by the way of static pressure；And/or
Second slurry is prepared into the second film strips by the way of tape casting, using etc. will be described in multilayer by the way of static pressure
Second film strips are pressed into the secondary diaphragm.
5. the preparation method according to claim 4, wherein at least one of first film strips and second film strips
With a thickness of 20-70 microns.
6. preparation method according to claim 1, wherein in parts by weight, the liquid additive includes mixing
Following substance together: PVB:5-8 parts, plasticizer: 2-3 parts, toluene: 30-35 parts, ethyl alcohol: 8-9 parts, isopropanol: 5-7 parts.
7. preparation method according to claim 1, wherein sintering temperature is 880-930 DEG C, and sintering time is 2-5 hours.
8. preparation method according to claim 1, wherein the primary diaphragm and the secondary diaphragm are at least one
It is a, and the primary diaphragm and the secondary diaphragm are staggered.
9. preparation method according to claim 1, wherein at least one of first powder and described second powder
Granularity is 0.6-1.5 microns.
10. preparation method according to claim 1, wherein in preparing first powder and second powder
In at least one, before fixed reaction and ball milling is all made of after solid phase reaction, raw material is ground, and solid phase reaction
The granularity for the powder that ball milling obtains before the granularity for the powder that ball milling obtains later is less than solid phase reaction.
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