CN105198417A - Preparation method of zirconic acid sodium bismuthide lithium cerium doped potassium-sodium niobate based ceramic material - Google Patents
Preparation method of zirconic acid sodium bismuthide lithium cerium doped potassium-sodium niobate based ceramic material Download PDFInfo
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Abstract
The invention discloses a preparation method of a zirconic acid sodium bismuthide lithium cerium doped potassium-sodium niobate based ceramic material. The preparation method is characterized by comprising the steps of adopting a traditional solid phase method to prepare a zirconic acid sodium bismuthide lithium cerium doped potassium-sodium niobate (KNN) based ceramic powder material; preparing zirconic acid sodium bismuthide lithium cerium doped KNN based ceramics through traditional electronic ceramic fabrication processes such as granulation tableting, dumping, sintering and silver polarizing. The KNN piezoelectric property is greatly improved through components (BiNa)(LiCe)ZrO3 doping, good temperature stability is realized, and an important role is played on KNN based ceramic material application.
Description
Technical field
The present invention relates to a kind of preparation method of zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate (KNN) base ceramic material, specifically, the zirconic acid bismuth sodium lithium cerium simultaneously mixing certain content in the preparation process of potassium-sodium niobate sill, by specific polarization method to obtain high tension performance.Belong to Materials Science and Engineering field.
Background technology
Piezoelectric ceramics because of its excellent performance, preparation technology simple, cost is low, is widely used in the various electronic devices and components such as sensor, driving mechanism, ultrasonic transducer, resonator, wave filter.At present, a large amount of Sustainable development being unfavorable for the mankind and ecotope containing lead piezoelectric ceramics used on market.High-performance Pb-free piezoelectric ceramics, particularly have perovskite structure high-performance Pb-free piezoelectric ceramics, the piezoelectric property because of its excellence becomes the focus and emphasis studied in the world in recent years.
Potassium-sodium niobate (K, Na) NbO
3a kind of piezoelectric with perovskite structure, the piezoelectric constant d of pure potassium sodium niobate ceramic prepared by ordinary sinter technique
33be only about 80pC/N.Its piezoelectric constant of potassium sodium niobate piezoelectric ceramics having scholar to adopt discharge plasma sintering or hot pressed sintering to prepare can reach ~ 250pC/N, to improve the mechanical mechanics property of material itself, there is higher density, but stability of material is not good enough, size-constrained system, and processing unit costly, is not suitable for suitability for industrialized production.Carry out the sintering characteristic that chemical doping improves pottery effectively in potassium-sodium niobate-based pottery, obtain the ceramic body of high-compactness, significantly improve its piezoelectric property (200 ~ 400pC/N).Through the potassium-sodium niobate-based pottery of doping vario-property, even if adopt conventional preparation techniques also can have relatively high piezoelectric constant (d
33).There is not the report to potassium-sodium niobate-based pottery doping zirconic acid bismuth sodium lithium cerium at present.
Summary of the invention
The object of the invention is to provide a kind of zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate base ceramic material for the deficiencies in the prior art.Be characterized in carrying out potassium-sodium niobate-based ceramic doping vario-property by chemical doping, to build multiphase coexistence ceramic systems under room temperature.The method substantially increases the piezoelectric property of potassium sodium niobate ceramic.
Object of the present invention is realized by following technical measures, and wherein said raw material number, except specified otherwise, is parts by weight.
The preparation method of zirconic acid bismuth sodium lithium cerium dopping potassium sodium niobate piezoelectric ceramics material comprises the following steps:
(1) solid phase method prepares potassium-sodium niobate-based ceramic powder
Raw material is pressed general formula (1-x) K
0.48na
0.52nb
0.95sb
0.05o
3-x (Bi
0.5na
0.5)
1-
y(Li
0.5ce
0.5)
yzrO
3, wherein x represents (Bi
0.5na
0.5)
0.9(Li
0.5ce
0.5)
0.1zrO
3molar fraction, the scope of numerical value is: 0.00≤x≤0.0425; Y represents Li
0.5ce
0.5replace Bi
0.5na
0.5molar fraction, the scope of numerical value is: 0.00≤y≤0.20; Doped element carries out weighing, preparing burden for raw material adds with oxide compound or carbonate, be put in polyurethane ball-milling pot, take dehydrated alcohol as dispersion medium, after planetary ball mill ball milling 8 ~ 24h, rotating speed is 100 ~ 450rpm, and under baking lamp, baking 2 is to 3h, then in temperature programmed control box-type furnace, is warming up to 850 DEG C, insulation 6h, obtains potassium-sodium niobate-based ceramic powder.
(2) granulation compressing tablet
In the powder of above-mentioned oven dry, add concentration is carry out granulation after the polyvinyl alcohol solution of 5 ~ 10wt% fully mixes, and then under pressure is 16 ~ 20MPa, is pressed into diameter 10 ~ 15mm, the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping that thickness is 0.8 ~ 1.2mm.
(3) binder removal sintering
By above-mentioned potassium-sodium niobate-based ceramic disks at temperature 700 ~ 950 DEG C of binder removals, then make the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping at temperature 1000 DEG C ~ 1200 DEG C sintering 2 ~ 4h.
(4) by galactic pole
The potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping obtained afterwards by above-mentioned sintering brushes the silver slurry that concentration is 5 ~ 15wt%, then makes sample at temperature 700 ~ 800 DEG C sintering 10 ~ 15min.Polarized in the silicone oil bath of 20 ~ 80 DEG C by sample, Polarization field strength is 2 ~ 5kV/mm, and the dwell time is 5 ~ 30min, makes zirconic acid bismuth sodium lithium cerium dopping potassium sodium niobate piezoelectric ceramics.
The zirconic acid bismuth sodium lithium cerium dopping potassium sodium niobate piezoelectric ceramics that the preparation method of zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate base ceramic material prepares, its piezoelectric property is: piezoelectric constant d
33: 400 ~ 485pC/N, electromechanical coupling factor k
p: 0.42 ~ 0.52, remnant polarization P
r: 18 ~ 21 μ C/cm
2, coercive field E
c: 7.5 ~ 8.5kV/cm.
Described zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate base ceramic material is as the application of leadless piezoelectric ceramics.
Structural characterization and performance test:
1 utilizes X-ray diffractometer (XRD, DX-2700) to carry out phase structure analysis to the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping; In detail as shown in Figure 1.Result shows: the potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping is single perovskite structure, presents multiphase coexistence crystalline structure under room temperature;
2 utilize electron microscope (SEM, JSM-5900) to observe the surface topography of the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping; In detail as shown in Figure 2.Result shows: zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate-based ceramic crystalline grain size heterogeneity, and little crystal grain is distributed in grain boundaries, and crystal grain is comparatively fine and close;
3 utilize d
33piezoelectricity tester (ZJ-3A) and electric impedance analyzer (HP4294A) test the d of the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping
33and K
p; In detail as shown in Figure 3.Result shows: the potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping has comparatively excellent piezoelectric constant and electromechanical coupling factor;
Be situated between warm curve and low temperature of 4 high temperature utilizing LCR analyser (HP4980, TH2816A) to test the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping is respectively situated between warm curve; Refer to Fig. 4, shown in Fig. 5.Result shows: the potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping has higher Curie temperature, and this pottery at room temperature can construct rhombohedral-tetragonal phase circle, improves its piezoelectric property;
5 utilize ferroelectric workstation (RadiantPrecisionWork-station) to test the ferroelectric hysteresis loop of the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping, in detail as shown in Figure 6.Result shows: the potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping has comparatively excellent remnant polarization and coercive field;
6 utilize d
33the annealing curve of the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping tested by piezoelectricity tester (ZJ-3A); In detail as shown in Figure 7.Result shows: its piezoelectric property of the potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping has comparatively excellent thermodynamic stability;
The potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping utilizing method of the present invention to prepare due to crystal grain dense, improve sintering activity, sintering effect is better, and under lower sintering temperature (~ 1090 DEG C), the compactness of the potassium-sodium niobate-based pottery of sodium zirconate lithium cerium dopping is higher.The potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping has higher piezoelectric constant d
33, its maximal pressure electric constant d
33for 485pC/N.
Compared with prior art, tool has the following advantages in the present invention:
1 zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate base ceramic material, effectively raises the piezoelectric property of potassium-sodium niobate sill;
2 polarize at a lower temperature, are conducive to the potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping and fully polarize, farthest improve its piezoelectric property.
Accompanying drawing explanation
Fig. 1 is the X ray diffracting spectrum of the zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate base ceramic material in embodiment 1 ~ 5 with different content.
Fig. 2 is the stereoscan photograph (SEM) of the potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping of embodiment 4 sample.
Fig. 3 is the d that embodiment 1 ~ 5 has the zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate base ceramic material of different content
33and K
p.
Fig. 4 is that high temperature that embodiment 2 ~ 4 has a zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate base ceramic material of different content is situated between warm curve.
Fig. 5 is that low temperature that embodiment 2 ~ 4 has a zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate base ceramic material of different content is situated between warm curve.
Fig. 6 is the ferroelectric hysteresis loop figure of the zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate base ceramic material of embodiment 4 sample.
Fig. 7 is the annealing curve figure of the zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate base ceramic material in application example 1 with different content.
Embodiment
Below by embodiment, the present invention is specifically described; what be necessary to herein means out is that the present embodiment is only used to further illustrate the present invention; can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field can make some nonessential improvement and adjustment according to the content of the invention described above.
Embodiment 1:
(1) solid phase method prepares potassium-sodium niobate-based ceramic powder
Raw material is pressed general formula K
0.48na
0.52nb
0.95sb
0.05o
3(x=0.00, y=0.10, numbering 1
#), carry out weighing, preparing burden, be put in polyurethane ball-milling pot, take dehydrated alcohol as dispersion medium, after planetary ball mill ball milling 12h, rotating speed is 300rpm, under baking lamp, toast 2h makes it become dry, then continuous warming to 850 DEG C in temperature programmed control box-type furnace, insulation 6h, obtains potassium-sodium niobate-based ceramic powder.
(2) granulation compressing tablet
In the powder of above-mentioned oven dry, add concentration is carry out granulation after the polyvinyl alcohol solution of 8wt% fully mixes, and then under pressure is 10MPa, is pressed into diameter 10mm, the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping that thickness is 1.0mm.
(3) binder removal sintering
By above-mentioned potassium-sodium niobate-based ceramic disks at temperature 850 DEG C of binder removals, then make the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping at temperature 1090 DEG C sintering 3h.
(4) by galactic pole
The potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping obtained afterwards by above-mentioned sintering brushes the silver slurry that concentration is 10wt%, then makes sample at temperature 700 DEG C sintering 10min.Silicone oil bath sample being put into 25 DEG C polarizes, and Polarization field strength is 3.5kV/mm, and the dwell time is 10min, makes 1
#the potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping.
Embodiment 2:
(1) solid phase method prepares potassium-sodium niobate-based ceramic powder
Raw material is pressed general formula 0.97K
0.48na
0.52nb
0.95sb
0.05o
3-0.03 (Bi
0.5na
0.5)
0.9(Li
0.5ce
0.5)
0.1zrO
3(x=0.03, y=0.10, numbering 2
#), carry out weighing, preparing burden, be put in polyurethane ball-milling pot, take dehydrated alcohol as dispersion medium, after planetary ball mill ball milling 12h, rotating speed is 300rpm, under baking lamp, toast 2h makes it become dry, then continuous warming to 850 DEG C in temperature programmed control box-type furnace, insulation 6h, obtains potassium-sodium niobate-based ceramic powder.
(2) granulation compressing tablet
In the powder of above-mentioned oven dry, add concentration is carry out granulation after the polyvinyl alcohol solution of 8wt% fully mixes, and then under pressure is 10MPa, is pressed into diameter 10mm, the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping that thickness is 1.0mm.
(3) binder removal sintering
By above-mentioned potassium-sodium niobate-based ceramic disks at temperature 850 DEG C of binder removals, then make the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping at temperature 1090 DEG C sintering 3h.
(4) by galactic pole
The potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping obtained afterwards by above-mentioned sintering brushes the silver slurry that concentration is 10wt%, then makes sample at temperature 700 DEG C sintering 10min.Silicone oil bath sample being put into 25 DEG C polarizes, and Polarization field strength is 3.5kV/mm, and the dwell time is 10min, makes 2
#the potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping.
Embodiment 3:
(1) solid phase method prepares potassium-sodium niobate-based ceramic powder
Raw material is pressed general formula 0.9675K
0.48na
0.52nb
0.95sb
0.05o
3-0.0325 (Bi
0.5na
0.5)
0.9(Li
0.5ce
0.5)
0.1zrO
3(x=0.0325, y=0.10, numbering 3
#), carry out weighing, preparing burden, be put in polyurethane ball-milling pot, take dehydrated alcohol as dispersion medium, after planetary ball mill ball milling 12h, rotating speed is 300rpm, under baking lamp, toast 2h makes it become dry, then continuous warming to 850 DEG C in temperature programmed control box-type furnace, insulation 6h, obtains potassium-sodium niobate-based ceramic powder.
(2) granulation compressing tablet
In the powder of above-mentioned oven dry, add concentration is carry out granulation after the polyvinyl alcohol solution of 8wt% fully mixes, and then under pressure is 10MPa, is pressed into diameter 10mm, the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping that thickness is 1.0mm.
(3) binder removal sintering
By above-mentioned potassium-sodium niobate-based ceramic disks at temperature 850 DEG C of binder removals, then make the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping at temperature 1090 DEG C sintering 3h.
(4) by galactic pole
The potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping obtained afterwards by above-mentioned sintering brushes the silver slurry that concentration is 10wt%, then makes sample at temperature 700 DEG C sintering 10min.Silicone oil bath sample being put into 25 DEG C polarizes, and Polarization field strength is 3.5kV/mm, and the dwell time is 10min, makes 3
#the potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping.
Embodiment 4:
(1) solid phase method prepares potassium-sodium niobate-based ceramic powder
Raw material is pressed general formula 0.96K respectively
0.48na
0.52nb
0.95sb
0.05o
3-0.04 (Bi
0.5na
0.5)
0.9(Li
0.5ce
0.5)
0.1zrO
3(x=0.04, y=0.10, numbering 4
#), carry out weighing, preparing burden, be put in polyurethane ball-milling pot, take dehydrated alcohol as dispersion medium, after planetary ball mill ball milling 12h, rotating speed is 300rpm, under baking lamp, toast 2h makes it become dry, then continuous warming to 850 DEG C in temperature programmed control box-type furnace, insulation 6h, obtains potassium-sodium niobate-based ceramic powder.
(2) granulation compressing tablet
In the powder of above-mentioned oven dry, add concentration is carry out granulation after the polyvinyl alcohol solution of 8wt% fully mixes, and then under pressure is 10MPa, is pressed into diameter 10mm, the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping that thickness is 1.0mm.
(3) binder removal sintering
By above-mentioned potassium-sodium niobate-based ceramic disks at temperature 850 DEG C of binder removals, then make the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping at temperature 1090 DEG C sintering 3h.
(4) by galactic pole
The potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping obtained afterwards by above-mentioned sintering brushes the silver slurry that concentration is 10wt%, then makes sample at temperature 700 DEG C sintering 10min.Silicone oil bath sample being put into 25 DEG C polarizes, and Polarization field strength is 3.5kV/mm, and the dwell time is 10min, makes 4
#the potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping.
Embodiment 5:
(1) solid phase method prepares potassium-sodium niobate-based ceramic powder
Raw material is pressed general formula 0.9575K
0.48na
0.52nb
0.95sb
0.05o
3-0.0425 (Bi
0.5na
0.5)
0.9(Li
0.5ce
0.5)
0.1zrO
3(x=0.0425, y=0.10, numbering 5
#), carry out weighing, preparing burden, be put in polyurethane ball-milling pot, take dehydrated alcohol as dispersion medium, after planetary ball mill ball milling 12h, rotating speed is 300rpm, under baking lamp, toast 2h makes it become dry, then continuous warming to 850 DEG C in temperature programmed control box-type furnace, insulation 6h, obtains potassium-sodium niobate-based ceramic powder.
(2) granulation compressing tablet
In the powder of above-mentioned oven dry, add concentration is carry out granulation after the polyvinyl alcohol solution of 8wt% fully mixes, and then under pressure is 10MPa, is pressed into diameter 10mm, the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping that thickness is 1.0mm.
(3) binder removal sintering
By above-mentioned potassium-sodium niobate-based ceramic disks at temperature 850 DEG C of binder removals, then make the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping at temperature 1090 DEG C sintering 3h.
(4) by galactic pole
The potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping obtained afterwards by above-mentioned sintering brushes the silver slurry that concentration is 10wt%, then makes sample at temperature 700 DEG C sintering 10min.Silicone oil bath sample being put into 25 DEG C polarizes, and Polarization field strength is 3.5kV/mm, and the dwell time is 10min, makes 5
#the potassium-sodium niobate-based pottery of zirconic acid bismuth sodium lithium cerium dopping.
Application example 1:
Choose the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping prepared in above 1 ~ 5 embodiment, anneal is carried out at 25 ~ 350 DEG C, under each annealing temperature, the anneal time is 30min, measures the d of each ceramic disks under corresponding annealing temperature after anneal
33value, the results detailed in Fig. 7.
Claims (3)
1. a preparation method for zirconic acid bismuth sodium lithium cerium dopping potassium sodium niobate piezoelectric ceramics material, is characterized in that the method comprises the following steps:
(1) solid phase method prepares potassium-sodium niobate-based ceramic powder
Raw material is pressed respectively general formula (1-x) K
0.48na
0.52nb
0.95sb
0.05o
3-x (Bi
0.5na
0.5)
1-
y(Li
0.5ce
0.5)
yzrO
3, wherein x represents (Bi
0.5na
0.5)
0.9(Li
0.5ce
0.5)
0.1zrO
3molar fraction, the scope of numerical value is: 0.00≤x≤0.0425; Y represents Li
0.5ce
0.5replace Bi
0.5na
0.5molar fraction, the scope of numerical value is: 0.00≤y≤0.20; Doped element carries out weighing, preparing burden for raw material adds with oxide compound or carbonate, be put in polyurethane ball-milling pot, take dehydrated alcohol as dispersion medium, after planetary ball mill ball milling 8 ~ 24h, rotating speed is 100 ~ 450rpm, and under baking lamp, baking 2 is to 3h, then in temperature programmed control box-type furnace, is warming up to 850 DEG C, insulation 6h, obtains potassium-sodium niobate-based ceramic powder;
(2) granulation compressing tablet
In the powder of above-mentioned oven dry, add concentration is carry out granulation after the polyvinyl alcohol solution of 5 ~ 10wt% fully mixes, and then under pressure is 16 ~ 20MPa, is pressed into diameter 10 ~ 15mm, the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping that thickness is 0.8 ~ 1.2mm;
(3) binder removal sintering
By above-mentioned potassium-sodium niobate-based ceramic disks at temperature 700 ~ 950 DEG C of binder removals, then make the potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping at temperature 1000 DEG C ~ 1200 DEG C sintering 2 ~ 4h;
(4) by galactic pole
The potassium-sodium niobate-based ceramic disks of zirconic acid bismuth sodium lithium cerium dopping obtained afterwards by above-mentioned sintering brushes the silver slurry that concentration is 5 ~ 15wt%, then makes sample at temperature 700 ~ 800 DEG C sintering 10 ~ 15min.Polarized in the silicone oil bath of 20 ~ 80 DEG C by sample, Polarization field strength is 2 ~ 5kV/mm, and the dwell time is 5 ~ 30min, makes zirconic acid bismuth sodium lithium cerium dopping potassium sodium niobate piezoelectric ceramics.
2. the zirconic acid bismuth sodium lithium cerium dopping potassium sodium niobate piezoelectric ceramics for preparing of the preparation method of zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate base ceramic material as claimed in claim 1, its piezoelectric property is: piezoelectric constant d
33: 400 ~ 485pC/N, electromechanical coupling factor k
p: 0.42 ~ 0.52, remnant polarization P
r: 18 ~ 21 μ C/cm
2, coercive field E
c: 7.5 ~ 8.5kV/cm.
3. zirconic acid bismuth sodium lithium cerium dopping potassium-sodium niobate base ceramic material as claimed in claim 2, is characterized in that this stupalith is applied as leadless piezoelectric ceramics.
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| CN105732032A (en) * | 2016-01-19 | 2016-07-06 | 上海交通大学 | High-compactness potassium sodium lithium niobate-calcium sodium bismuth titanate binary system lead-free piezoelectric ceramic and preparation method thereof |
| CN107098701A (en) * | 2017-04-27 | 2017-08-29 | 成都信息工程大学 | Potassium-sodium niobate lithium zirconic acid potassium sodium bismuth scandium acid bismuth ternary series lead-free piezoelectric ceramic |
| CN107268084A (en) * | 2016-04-08 | 2017-10-20 | 中国科学院上海硅酸盐研究所 | Potassium-sodium niobate-zirconic acid bismuth sodium leadless piezoelectric monocrystalline and its growing method |
| CN111908917A (en) * | 2019-05-07 | 2020-11-10 | 四川大学 | Sodium bismuth zirconate strontium doped potassium sodium niobate based piezoelectric ceramic material and preparation method thereof |
| CN113735581A (en) * | 2021-09-16 | 2021-12-03 | 湖南省美程陶瓷科技有限公司 | Lead-free piezoelectric ceramic material and preparation method thereof |
| CN115572165A (en) * | 2021-06-21 | 2023-01-06 | 四川大学 | Niobium zirconium acid bismuth potassium sodium copper iron leadless piezoelectric ceramic with high mechanical quality factor |
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| CN105732032A (en) * | 2016-01-19 | 2016-07-06 | 上海交通大学 | High-compactness potassium sodium lithium niobate-calcium sodium bismuth titanate binary system lead-free piezoelectric ceramic and preparation method thereof |
| CN107268084A (en) * | 2016-04-08 | 2017-10-20 | 中国科学院上海硅酸盐研究所 | Potassium-sodium niobate-zirconic acid bismuth sodium leadless piezoelectric monocrystalline and its growing method |
| CN107268084B (en) * | 2016-04-08 | 2019-10-15 | 中国科学院上海硅酸盐研究所 | Potassium-sodium niobate-zirconic acid bismuth sodium leadless piezoelectric monocrystalline and its growing method |
| CN107098701A (en) * | 2017-04-27 | 2017-08-29 | 成都信息工程大学 | Potassium-sodium niobate lithium zirconic acid potassium sodium bismuth scandium acid bismuth ternary series lead-free piezoelectric ceramic |
| CN107098701B (en) * | 2017-04-27 | 2020-09-08 | 成都信息工程大学 | Potassium sodium lithium niobate-potassium sodium bismuth zirconate-bismuth acid bismuth ternary system lead-free piezoelectric ceramic |
| CN111908917A (en) * | 2019-05-07 | 2020-11-10 | 四川大学 | Sodium bismuth zirconate strontium doped potassium sodium niobate based piezoelectric ceramic material and preparation method thereof |
| CN115572165A (en) * | 2021-06-21 | 2023-01-06 | 四川大学 | Niobium zirconium acid bismuth potassium sodium copper iron leadless piezoelectric ceramic with high mechanical quality factor |
| CN115572165B (en) * | 2021-06-21 | 2023-08-29 | 四川大学 | Bismuth potassium sodium copper iron niobate leadless piezoelectric ceramic with high mechanical quality factor |
| CN115572166A (en) * | 2021-07-05 | 2023-01-06 | 成都理想境界科技有限公司 | Piezoelectric ceramic and preparation method and application thereof |
| CN113735581A (en) * | 2021-09-16 | 2021-12-03 | 湖南省美程陶瓷科技有限公司 | Lead-free piezoelectric ceramic material and preparation method thereof |
| CN113735581B (en) * | 2021-09-16 | 2022-07-15 | 湖南省美程陶瓷科技有限公司 | Lead-free piezoelectric ceramic material and preparation method thereof |
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Effective date of registration: 20211203 Address after: 511356 No. 8, Jingquan 1st Road, Yonghe Economic Zone, Guangzhou Economic and Technological Development Zone, Guangzhou, Guangdong Patentee after: GUANGZHOU KAILITECH ELECTRONICS Co.,Ltd. Address before: 610065, No. 24, south section of first ring road, Chengdu, Sichuan, Wuhou District Patentee before: SICHUAN University |