CN1224115C - Three-component compound magnetoelectric material using organic polymer as adhesive and its preparation method - Google Patents
Three-component compound magnetoelectric material using organic polymer as adhesive and its preparation method Download PDFInfo
- Publication number
- CN1224115C CN1224115C CN 02124138 CN02124138A CN1224115C CN 1224115 C CN1224115 C CN 1224115C CN 02124138 CN02124138 CN 02124138 CN 02124138 A CN02124138 A CN 02124138A CN 1224115 C CN1224115 C CN 1224115C
- Authority
- CN
- China
- Prior art keywords
- powder
- alloy
- polyethylene
- lead
- mixed
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The present invention relates to a ternary compound magnetoelectric material using organic high molecules as an adhesive, and a preparation method of the magnetoelectric material. Organic high molecules are used as an adhesive (such as polyvinylidene fluoride, polyethylene, etc.); piezoelectric ceramics (such as lead zirconate titanate, lead titanate, barium titanate, etc.) and magnetostrictive materials (such as terbium-dy-fe alloy) are treated by hot press molding at a low temperature, and compound materials in type 0-3 and type 2-2 can be prepared. Compared with the prior art, the method has the advantages of simple molding processing technology, good mechanical property of materials, high magnetoelectric transfer coefficient, etc. The material is a novel multifunctional magnetoelectric compound material. By adopting a hot press technique to prepare the compound magnetoelectric material, the hot press temperature (which is generally from 120 to 200 DEG C) is low, and the molding is convenient. By regulating the addition order of components and the relative content of components, the magnetoelectric performance of the material can be obviously changed, which enables the material to achieve different requirements.
Description
Technical field
The present invention relates to a kind of compound magnetoelectric material and preparation method thereof, relating in particular to a kind of is the preparation method of the three-component compound magnetoelectric material of binding agent with the organic polymer.
Background technology
Magnetoelectric material is that nearly decades, (people such as Van Run reported BaTiO in 1974
3-CoFe
2O
4The magnetoelectricity conversion coefficient of this composite material is big more a lot of than monophase materials) a kind of Multifunction composite material of just growing up, the application aspect engineering is very extensive.Because magnetoelectric material had both had the character of magnetic material, the performance that has piezoelectric again also have the ins and outs of magnetoelectric material simultaneously, so magnetoelectric material is as a kind of new material, have the function of three kinds of materials simultaneously concurrently, it uses the field of also just having contained three kinds of materials.Only the on the one hand main application of magnetoelectric effect just comprises the magnetoelectric transducer in radio, photoelectricity, microwave electron and the transducer, field probe, inductor, switch, magnetoelectricity memory storage, the electric installation of magnetic control system or the magnetic device of electric control, intelligence sensor or the like.In addition because this material integrates magnetic, piezoelectricity and magnetoelectricity, thereby to future miniaturization of devices, integrated, multifunction develops that very big impetus is arranged.
The magnetoelectricity conversion coefficient of magnetoelectric material is usually tens to hundreds of mV/cmOe.The magnetoelectric material of research can roughly be divided into two classes at present, one class is the compound of ferrite and piezoelectric, this composite study is more extensive, especially the U.S. and India have done a lot of work in this regard, but magnetic electricity performance improves not quite always, want in this class material, to have breakthrough, very difficult.Another kind of is the compound of magnetic metal and piezoelectric, has only U.S. University of Pennsylvania to study the 2-2 type binary composite material of Terfenol-D and PZT up to now, and magnetic electricity performance has reached 5.9V/cmOe, is the peak of present magnetic-electric coefficient.Therefore more wide development space is being arranged aspect the composite material of magnetic metal and piezoelectric ceramic.Though the University of Pennsylvania has obtained the high value of 5.9V/cmOe, and significant disadvantages is but arranged: the preparation and the processing difficulties of (1) Terfenol-D sheet.(2) preparation of PZT will be through twice high temperature sintering, and the cycle is long, and the difficulty processing of pottery itself has caused the difficulty of processing of PZT sheet.The interface connectivity problem of (3) two kinds of materials.(4) fragility of raw material Terfenol-D and PZT has determined the sample poor toughness.
In sum, about 0-3 type, 2-2 type is that the research of the three-component compound magnetoelectric material of binding agent yet there are no report with the organic polymer, it is a kind of novel magnetoelectric material, it can overcome above four kinds of shortcomings, utilizes simple heat pressing process to obtain the magnetic electric compound material that interface junction gets togather stable performance.As everyone knows, preparation technology is the basis of material technology, also can cause the character of material to change a lot even form identical, different preparation process.Therefore be necessary the preparation technology of this kind composition is furtherd investigate.
Summary of the invention
The objective of the invention is deficiency and defective at the prior art existence, provide a kind of with the organic polymer be binding agent three-component compound magnetoelectric material with and preparation method thereof, this method need not to carry out high temperature sintering, can utilize simple heat pressing process to obtain that interface junction gets togather and the magnetic electric compound material of stable performance.
Technical scheme of the present invention is as follows:
A kind of is the three-component compound magnetoelectric material of binding agent with the organic polymer, it is characterized in that: this three-component compound magnetoelectric material is made up of following three kinds of materials, and its volume percent content is respectively:
Lead zirconate titanate, lead titanates or barium titanate: 60～88%
Tb-Dy-Fe alloy: 2～30%
Polyethylene: 10～38%
It is the method for the three-component compound magnetoelectric material of binding agent with the organic polymer that the present invention also provides a kind of preparation, and this method is carried out as follows:
(1) at first with lead zirconate titanate, lead titanates or barium titanate and Tb-Dy-Fe alloy ball milling powdered;
(2) according to lead zirconate titanate, lead titanates or barium titanate: Tb-Dy-Fe alloy: poly percent by volume is 60～88: 2～10: 10～38% directly mix;
(3) hot pressing between the oxidizing temperature of poly softening point and Tb-Dy-Fe alloy, hot pressing temperature are 120～200 ℃, and pressure is 8-10Mpa, hot pressing time 25-30 minute;
(4) specimen surface that hot pressing is good polishing, by galactic pole, electric polarization promptly makes 0-3 type compound magnetoelectric material then.
Another kind provided by the invention is the method for the three-component compound magnetoelectric material of binding agent with the organic polymer, and this method is carried out as follows:
(1) at first with lead zirconate titanate, lead titanates or barium titanate and Tb-Dy-Fe alloy ball milling powdered;
(2) according to polyethylene: lead zirconate titanate, lead titanates or barium titanate or polyethylene: the percent by volume of Tb-Dy-Fe alloy is respectively to mix at 20～40%: 60～80%, with lead zirconate titanate, lead titanates or barium titanate and poly mixed-powder is arranged, Tb-Dy-Fe alloy and poly mixed-powder and lead zirconate titanate, lead titanates or barium titanate and poly mixed-powder are put into mould successively then; Or with Tb-Dy-Fe alloy and poly mixed-powder, lead zirconate titanate, lead titanates or barium titanate and poly mixed-powder and Tb-Dy-Fe alloy and polyethylene are put into mould successively;
(3) hot-forming between the oxidizing temperature of poly softening point and lead zirconate titanate, lead titanates or barium titanate and Tb-Dy-Fe alloy, its hot pressing temperature is 120～200 ℃, and pressure is 8-10Mpa, and hot pressing time is 25-30 minute; The pre-tablet forming of mould is put into earlier in described hot-forming employing respectively, and it is unified hot-forming three to be superimposed together again, and perhaps puts into the mould disposal molding successively;
(4) the specimen surface polishing after pressing, by galactic pole, electric polarization can make 2-2 type compound magnetoelectric material then.
This method is compared with existing method, and it is simple to have a moulding process, and the mechanical property of materials is good, and the magnetoelectricity transformation ratio is a kind of novel magnetoelectricity multifunctional composite than advantages such as height.Adopt hot-pressing technique to prepare this kind compound magnetoelectric material, need not high temperature sintering, hot pressing temperature is low, convenient formation.By the interpolation order of adjusting composition and the relative amount of component, can change the magnetic electricity performance of material significantly, make it the requirement that reaches different.
Description of drawings
Fig. 1 is a process chart of the present invention.
Fig. 2 is a 0-3 type compound magnetoelectric material structure chart.
Fig. 3 is a 2-2 type compound magnetoelectric material structure chart.
Fig. 4 is the microstructure picture of embodiment 1 sample.
Fig. 5 a is the change curve of the magnetoelectricity conversion coefficient dE/dH of embodiment 1 sample with frequency.
Fig. 5 b is the change curve of the magnetoelectricity conversion coefficient dE/dH of embodiment 1 sample with external magnetic field.
Fig. 6 is the microstructure picture of embodiment 2 samples.
Fig. 7 a is the change curve of the magnetoelectricity conversion coefficient dE/dH of embodiment 2 samples with frequency.
Fig. 7 b is that the magnetoelectricity conversion coefficient dE/dH of embodiment 2 samples is with the external magnetic field change curve.
Fig. 8 is the microstructure picture of embodiment 3 samples.
Fig. 9 a is the change curve of the magnetoelectricity conversion coefficient dE/dH of embodiment 3 samples with frequency.
Fig. 9 b is that the magnetoelectricity conversion coefficient dE/dH of embodiment 3 samples is with the external magnetic field change curve.
Figure 10 is the microstructure picture of embodiment 4 samples.
Figure 11 a is the change curve of the magnetoelectricity conversion coefficient dE/dH of embodiment 4 samples with frequency.
Fig. 1 lb is that the magnetoelectricity conversion coefficient dE/dH of embodiment 4 samples is with the external magnetic field change curve.
Figure 12 is the microstructure picture of embodiment 5 samples.
Figure 13 a is the close-up view of microscopic structure SEM of the 2-2 type structure sample of embodiment 6 preparation.
Figure 13 b is the PZT and the PVDF layer microscopic structure SEM figure of the 2-2 type structure sample of embodiment 6 preparations.
Figure 13 c is the Terfenol-D and the PVDF layer microscopic structure SEM figure of the 2-2 type structure sample of embodiment 6 preparations.
Figure 13 d is the interface microscopic structure SEM figure of the 2-2 type structure sample of embodiment 6 preparations.
Figure 14 is the magnetic electricity performance curve of the 2-2 type laminated construction sample of embodiment 6 preparations.
Figure 15 a is the microscopic structure SEM close-up view of the 2-2 type laminated construction sample of embodiment 7 preparations.
Figure 15 b is the PZT and the PVDF layer microscopic structure SEM figure of the 2-2 type laminated construction sample of embodiment 7 preparations.
Figure 15 c is the Terfenol-D and the PVDF layer microscopic structure SEM figure of the 2-2 type laminated construction sample of embodiment 7 preparations.
Figure 15 d is the interface microscopic structure SEM figure of the 2-2 type laminated construction sample of embodiment 7 preparations.
Figure 16 is the magnetic electricity performance curve of the 2-2 type laminated construction sample of embodiment 7 preparations.
Figure 17 a is the microscopic structure SEM close-up view of the 2-2 type laminated construction sample of embodiment 8 preparations.
Figure 17 b is the PZT and the PVDF layer microscopic structure SEM figure of the 2-2 type laminated construction sample of embodiment 8 preparations.
Figure 18 is the magnetic electricity performance curve of the 2-2 type laminated construction sample of embodiment 8 preparations.
Embodiment
Magnetoelectric material be utilize the piezoelectricity of piezoelectric ceramic and magnetostrictive material magnetostriction seize the opportunity a kind of new material that coupling effect prepares.Therefore in selection, should select piezoelectric effect and the bigger material of magnetostrictive effect as far as possible, piezoelectric commonly used at present is lead titanates (PT), lead zirconate titanate (PZT) and barium titanate (BT), certainly can also select adulterate body and other material with piezoelectric effect of these three kinds of materials, these materials can obtain on market.(molecular formula is TeDyFe to magnetostrictive material with Tb-Dy-Fe alloy at present
2, be written as Terfenol-D usually) and the magnetostriction coefficient maximum, therefore select Terfenol-D in this experiment for use, it also can have been bought on market, and its oxidizing temperature is about 300 ℃.This experiment adopts organic binder bond for connecting medium, and the moulding of material can be finished under very low temperature, and general hot pressing temperature is between 120～200 ℃.This method has been simplified technology, has shortened the one-tenth product cycle.Organic binder bond can be selected the commercially available chemical pure caking property good high-molecular organic material of softening point below the oxidizing temperature of other two kinds of compositions, can avoid in forming process, causing the oxidation of piezoelectric ceramic or magnetostrictive material like this, influence the performance of material.Usually can select macromolecular materials such as Kynoar (PVDF), polyethylene (PE) or epoxy resin.
Embodiment 1 (0-3 type):
The BT that ball milling is good, Terfenol-D and PVDF powder are evenly mixing in 60%: 2%: 38% according to percent by volume, then mixed-powder is poured in the mould, (pressure is 8MPa to carry out 180 ℃ of hot pressing on powder compressing machine, time is 25 minutes) moulding, obtain required 0-3 type structural material, technological process as shown in Figure 1, with its surface finish, by silver electrode, polarize in the silicone oil of heating afterwards, polarization intensity is 3kv/mm.Its displaing micro tissue topography as shown in Figure 4, the magnetoelectricity conversion coefficient is 1.0～2.2mv/cmOe, its change curve as shown in Figure 5.
Embodiment 2 (0-3 type):
The PT that ball milling is good, Terfenol-D and polyethylene (PE) powder are to mix at 65%: 4%: 31% according to percent by volume, then mixed-powder is poured in the mould, on powder compressing machine, carry out 120 ℃ of hot pressing (pressure 10MPa, time is 30 minutes) moulding, obtain required 0-3 type structural material, technological process is shown in figure l, with its surface finish, by silver electrode, polarize in the silicone oil of heating afterwards, polarization intensity is 3kv/mm.Its displaing micro tissue topography as shown in Figure 6, the magnetoelectricity conversion coefficient is 2～10mv/cmOe, its change curve as shown in Figure 7.
Embodiment 3 (0-3 type):
The PZT that ball milling is good, Terfenol-D and Kynoar (PVDF) powder are to mix at 75%: 5%: 20% according to percent by volume, then mixed-powder is poured in the mould, (pressure is 10MPa to carry out 200 ℃ of hot pressing on powder compressing machine, time is 30 minutes) moulding, obtain required 0-3 type structural material, technological process as shown in Figure 1, with its surface finish, by silver electrode, polarize in the silicone oil of heating afterwards, polarization intensity is 3kv/mm.Its displaing micro tissue topography as shown in Figure 8, the magnetoelectricity conversion coefficient is 6～15mv/cmOe, its change curve as shown in Figure 9.
Embodiment 4 (0-3 type):
The BT that ball milling is good, Terfenol-D and PVDF powder are to mix at 70%: 8%: 22% according to percent by volume, then mixed-powder is poured in the mould, (pressure is 9MPa to carry out 200 ℃ of hot pressing on powder compressing machine, time is 28 minutes) moulding, obtain required 0-3 type structural material, technological process is shown in figure l, with its surface finish, by silver electrode, polarize in the silicone oil of heating afterwards, polarization intensity is 3kv/mm.Its displaing micro tissue topography as shown in figure 10, the magnetoelectricity conversion coefficient is 2～9mv/cmOe, its change curve as shown in figure 11.
Embodiment 5 (0-3 type)
The PT that ball milling is good, Terfenol-D and polyethylene (PE) powder are to mix at 88%: 2%: 10% according to percent by volume, then mixed-powder is poured in the mould, (pressure is 9MPa to carry out 150 ℃ of hot pressing on powder compressing machine, time is 30 minutes) moulding, obtain required 0-3 type structural material, technological process as shown in Figure 1, with its surface finish, by silver electrode, polarize in the silicone oil of heating afterwards, polarization intensity is 3kv/mm.Its displaing micro tissue topography as shown in figure 12.
Embodiment 6 (2-2 type)
The PT powder that ball milling is good is 70%: 30% with the PE powder according to the volumn concentration ratio, and Terfenol-D powder and PF powder are respectively evenly to mix at 70%: 30% according to the volumn concentration ratio.According to PT/PE: Terfenol-D/PE bed thickness ratio is to take by weighing sample at 3: 1, hot pressing in advance is in blocks respectively then the mixed-powder of the mixed-powder of mixed-powder, PE and the Terfenol-D of the PE that weighs up and PT and PE and PT to be put into mould successively, and it is unified hot-forming then three to be stacked together again.Hot pressing temperature is 120 ℃, and pressure is 9MPa, and the time is 30 minutes.With the specimen surface polishing, by silver electrode, in the silicone oil of heating, polarize afterwards, polarization intensity is 3kv/mm.The displaing micro tissue topography of this sample as shown in figure 13, magnetoelectricity conversion coefficient maximum can reach 111.6mv/cmOe, its change curve as shown in figure 14.
Embodiment 7 (2-2 type)
PZT powder and PVDF powder that ball milling is good are 80%: 20% according to the volumn concentration ratio, and Terfenol-D powder and PVDF powder are respectively evenly to mix at 80%: 20% according to volumn concentration.According to PZT/PVDF: Terfenol-D/PVDF bed thickness ratio is to take by weighing sample at 0.375: 1, hot pressing in advance is in blocks respectively then the mixed-powder of the mixed-powder of mixed-powder, PVDF and the PZT of the PVDF that weighs up and Terfenol-D and PVDF and Terfenol-D to be put into mould successively, and it is unified hot-forming then three to be stacked together again.Hot pressing temperature is 200 ℃, and pressure is 9MPa, and the time is 30 minutes.With the specimen surface polishing, by silver electrode, in the silicone oil of heating, polarize afterwards, polarization intensity is 3kv/mm.The displaing micro tissue topography of this sample as shown in figure 15, magnetoelectricity conversion coefficient maximum can reach 126.84mv/cmOe, its change curve as shown in figure 16.
Embodiment 8 (2-2 type)
BT powder and PVDF powder that ball milling is good are 60%: 40% according to the volumn concentration ratio, and Terfenol-D powder and PVDF powder are respectively evenly to mix at 60%: 40% according to the volumn concentration ratio.According to BT/PVDF: Terfenol-D/PVDF bed thickness ratio is to take by weighing sample at 0.2: 1, and it is once hot-forming then the mixed-powder of the mixed-powder of mixed-powder, PVDF and the Terfenol-D of the PVDF that weighs up and BT and PVDF and BT to be put into mould successively.Hot pressing temperature is 200 ℃, and pressure is 9MPa, and the time is 30 minutes.With the specimen surface polishing, by silver electrode, in the silicone oil of heating, polarize afterwards, polarization intensity is 3kv/mm.The displaing micro tissue topography of this sample as shown in figure 17, magnetoelectricity conversion coefficient maximum can reach 49.62mv/cmOe, its change curve as shown in figure 18.
Claims (3)
1. one kind is the three-component compound magnetoelectric material of binding agent with the organic polymer, it is characterized in that: this three-component compound magnetoelectric material is made up of following three kinds of materials, and its volume percent content is respectively:
Lead zirconate titanate, lead titanates or barium titanate: 60～88%
Tb-Dy-Fe alloy: 2～30%
Polyethylene: 10～38%.
2. one kind prepares the method for three-component compound magnetoelectric material according to claim 1, and this method is carried out as follows:
(1) at first with " lead zirconate titanate, lead titanates or barium titanate " and Tb-Dy-Fe alloy ball milling powdered;
(2) according to " lead zirconate titanate, lead titanates or barium titanate ": Tb-Dy-Fe alloy: poly percent by volume is 60～88%: 2～10%: 10～38% directly mix;
(3) hot pressing between the oxidizing temperature of poly softening point and Tb-Dy-Fe alloy, hot pressing temperature are 120～200 ℃, and pressure is 8-10Mpa, hot pressing time 25-30 minute;
(4) specimen surface that hot pressing is good polishing, by galactic pole, electric polarization promptly makes 0-3 type compound magnetoelectric material then.
3. one kind prepares the method for three-component compound magnetoelectric material according to claim 1, and this method is carried out as follows:
(1) at first with " lead zirconate titanate, lead titanates or barium titanate " and Tb-Dy-Fe alloy ball milling powdered;
(2) with polyethylene and " lead zirconate titanate, lead titanates or barium titanate " powder by volume percentage be evenly to mix at 20～40%: 60～80%, make mixed-powder; Again with polyethylene and Tb-Dy-Fe alloy by volume percentage be evenly to mix at 20～40%: 60～80%, make mixed-powder;
Successively with the mixed-powder of polyethylene with " lead zirconate titanate, lead titanates or barium titanate ", the mixed-powder of the mixed-powder of polyethylene and Tb-Dy-Fe alloy and polyethylene and " lead zirconate titanate, lead titanates or barium titanate " is put into mould then; Or earlier the mixed-powder of polyethylene and Tb-Dy-Fe alloy is put into mould, and again the polyethylene and the mixed-powder of " lead zirconate titanate, lead titanates or barium titanate " are put into mould, put into the mixed-powder of polyethylene and Tb-Dy-Fe alloy at last again;
(3) hot-forming between the oxidizing temperature of poly softening point and " lead zirconate titanate, lead titanates or barium titanate " and Tb-Dy-Fe alloy, its hot pressing temperature is 120～200 ℃, and pressure is 8-10Mpa, and hot pressing time is 25-30 minute; The pre-tablet forming of mould is put into earlier in described hot-forming employing respectively, and it is unified hot-forming three to be superimposed together again, and perhaps puts into the mould disposal molding successively;
(4) the specimen surface polishing after pressing, by galactic pole, electric polarization can make 2-2 type compound magnetoelectric material then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02124138 CN1224115C (en) | 2002-07-12 | 2002-07-12 | Three-component compound magnetoelectric material using organic polymer as adhesive and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02124138 CN1224115C (en) | 2002-07-12 | 2002-07-12 | Three-component compound magnetoelectric material using organic polymer as adhesive and its preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1395325A CN1395325A (en) | 2003-02-05 |
| CN1224115C true CN1224115C (en) | 2005-10-19 |
Family
ID=4745348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02124138 Expired - Fee Related CN1224115C (en) | 2002-07-12 | 2002-07-12 | Three-component compound magnetoelectric material using organic polymer as adhesive and its preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1224115C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436529C (en) * | 2005-01-25 | 2008-11-26 | 武汉理工大学 | Interface modifier of organic polymer and iron inorganic composite materials and its preparation |
| CN1296429C (en) * | 2005-01-31 | 2007-01-24 | 武汉理工大学 | Method for modifying polymer orientation in magnetic-force-electric coupling effect |
| CN100364129C (en) * | 2005-05-20 | 2008-01-23 | 清华大学 | 1-3 structure huge magnetoelectric material and preparing process thereof |
| CN101286728B (en) * | 2008-05-28 | 2013-11-06 | 中国科学院上海硅酸盐研究所 | Energy exchanging device for magnetoelectric resonance |
| CN101604727B (en) * | 2008-06-13 | 2011-01-26 | 鸿富锦精密工业（深圳）有限公司 | Electrostrictive composite material and preparation method thereof |
| CN101781461B (en) * | 2009-01-16 | 2012-01-25 | 清华大学 | Electrostriction composite material and preparation method thereof |
| CN105347846B (en) * | 2015-12-01 | 2017-07-18 | 西南大学 | A kind of preparation method of ceramics/resin piezoelectric compound |
| CN106058037A (en) * | 2016-06-06 | 2016-10-26 | 苏州市奎克力电子科技有限公司 | Composite multiferroic material |
| CN107276454A (en) * | 2017-06-09 | 2017-10-20 | 浙江安控科技有限公司 | A kind of low-power consumption paw driver that AGV is transmitted suitable for lathe |
| CN108336218B (en) * | 2018-01-29 | 2021-12-07 | 长安大学 | Piezoelectric composite material for road and preparation method thereof |
| CN110333378B (en) * | 2019-05-31 | 2021-08-24 | 国网江西省电力有限公司电力科学研究院 | Magnetoelectric laminated material current sensing device based on magnetic convergence effect |
| CN110386775B (en) * | 2019-08-19 | 2021-12-17 | 北京海蓝声学传感技术有限公司 | 0-3 type piezoelectric composite material with excellent piezoelectric property |
| CN112816106B (en) * | 2020-12-24 | 2022-03-22 | 太原理工大学 | Tb-Dy-Fe flexible magnetoelastic film biosensor and preparation method thereof |
| CN113078255B (en) * | 2021-04-07 | 2022-02-25 | 吉林大学 | Wireless charging device for bio-implant device |
-
2002
- 2002-07-12 CN CN 02124138 patent/CN1224115C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1395325A (en) | 2003-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1224115C (en) | Three-component compound magnetoelectric material using organic polymer as adhesive and its preparation method | |
| CN105272244B (en) | A kind of potassium niobate sodium-based leadless piezoelectric ceramic and preparation method thereof | |
| CN102815938B (en) | Barium titanate-based lead-free electrostrictive ceramics and preparation method thereof | |
| CN101429022A (en) | Ferro-voltage ceramic component with low sintering temperature character, production and uses thereof | |
| CN101508841B (en) | Flexible polymer dielectric material for electrical condenser and preparation thereof | |
| CN102531578A (en) | BCT-BZT-BST (Barium calcium titanate-barium zirconate titanate-barium stannate titanate) ternary system lead-free piezoelectric ceramic | |
| CN1204629A (en) | Piezoelectric ceramic composition | |
| CN111747738B (en) | Preparation method of gradient ceramic piezoelectric material, piezoelectric material and piezoelectric sensor | |
| TW200529481A (en) | Piezoelectric porcelain and process for producing the same | |
| CN101265081B (en) | Ferroelectric ceramic with low-temperature sintering characteristic and its technique and application | |
| CN1384080A (en) | Ceramic producing process | |
| CN103373849A (en) | Niobium oxide doped barium calcium zirconate titanate leadless piezoelectric ceramic powder material | |
| CN105732022A (en) | Preparation method of piezoelectric ceramic with high Curie temperature and film thereof | |
| CN101661990B (en) | Preparation method of lead-free piezoceramic-polymer piezoelectric composite material with high d33 | |
| CN104844202B (en) | A kind of niobium nickel lead titanate piezoelectric ceramics of manganese lead antimonate doping | |
| CN1039331A (en) | Ferroelectric ceramic material | |
| CN102683576B (en) | Piezoelectric actuator and manufacturing method thereof | |
| CN115179387B (en) | 3D printing preparation method for wood pile type PZT support structure composite material driver | |
| KR100901463B1 (en) | Composition of lead-free piezoelectric ceramics for sensor and actuator and method for manufacturing the same | |
| CN1569423A (en) | Cement based piezoelectric intelligent composite material and its preparing method | |
| CN1433996A (en) | Production process for oxide magnetic material and oxide magnetic material | |
| CN103539447B (en) | Low-temperature sintered piezoelectric ceramic material and preparation method thereof | |
| KR20090040089A (en) | Piezoelectric material and method of manufacturing the same | |
| CN109279891B (en) | Bismuth ferrite based electrostrictive strain ceramic and preparation method and application thereof | |
| CN110498679B (en) | Preparation method of multilayer phase structure BNT-BT ceramic with high dielectric property |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051019 Termination date: 20120712 |