CN85100513B - Bismuth sodium barium titanate series piezoelectric ceramic material for ultrasound - Google Patents
Bismuth sodium barium titanate series piezoelectric ceramic material for ultrasoundInfo
- Publication number
- CN85100513B CN85100513B CN85100513A CN85100513A CN85100513B CN 85100513 B CN85100513 B CN 85100513B CN 85100513 A CN85100513 A CN 85100513A CN 85100513 A CN85100513 A CN 85100513A CN 85100513 B CN85100513 B CN 85100513B
- Authority
- CN
- China
- Prior art keywords
- tio
- piezoelectric ceramic
- low
- ultrasound
- ceramic material
- 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
Links
- 229910002113 barium titanate Inorganic materials 0.000 title abstract 2
- 229910010293 ceramic material Inorganic materials 0.000 title description 2
- KOJWXHDDSAMYEG-UHFFFAOYSA-N [Na].[Ba].[Bi] Chemical compound [Na].[Ba].[Bi] KOJWXHDDSAMYEG-UHFFFAOYSA-N 0.000 title 1
- 238000002604 ultrasonography Methods 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 22
- 229910002056 binary alloy Inorganic materials 0.000 claims abstract description 3
- 229910003237 Na0.5Bi0.5TiO3 Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 238000005245 sintering Methods 0.000 abstract description 5
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 8
- 239000011734 sodium Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 241001517610 Funa Species 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910010252 TiO3 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004523 agglutinating effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- UYLYBEXRJGPQSH-UHFFFAOYSA-N sodium;oxido(dioxo)niobium Chemical compound [Na+].[O-][Nb](=O)=O UYLYBEXRJGPQSH-UHFFFAOYSA-N 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
A binary system piezoceramic material having high Kt, Nt and large Kt/Kp ratios, low Kp and bulk density, and relatively small ε 33T and Qtm. It is an excellent material for making ultrasonic flaw detection, thickness measurement and medical ultrasonic transducer. The material has low sintering temperature and small volatility, does not need sealed sintering, does not contain public nuisance components, and is a piezoelectric material with simpler process and low cost. The material comprises XNa0.5Bi0.5TiO3- (1-X) BaTiO3, wherein X is 0.80-0.99 gram molecule, and a small amount of modification additive is added or not added. Preferably, the X value is 0.89 to 0.99 mol.
Description
The present invention is a kind of new binary system piezoceramic material.Such material has the Na of ratio
0.5bi
0.5tiO
3-K
0.5bi
0.5tiO
3the K that system's pottery is larger
t/ K
pratio (Kt: thickness electromechanical coupling coefficient, K
p: radially electromechanical coupling factor), less dielectric coefficient
there is high thickness vibration frequency constant (N simultaneously
t), lower bulk density and thickness vibration Qm
being particularly suitable for ultrasonic transducer uses; And the manufacturing process of this material is simple, cost is low, not containing the composition that causes public hazards.
1963, sakata is good-and youth studied BaTiO
3-Na
0.5bi
0.5tiO
3xi Fubei district, sakata in 1967, the large former Na that studied
0.5bi
0.5tiO
3-PbTiO
3the ferroelectric piezoelectric property of system, still, does not all obtain material with practical value.In recent years, the inventor has studied Na
0.5bi
0.5tiO
3-K
0.5bi
0.5tiO
3xi Funa district pottery, has obtained K
t: 0.485 K
p: 0.255,
n
t: 2670Hzm,
105 the valuable ultrasonic piezoelectric of using.Because modern ultrasonic technique requires there is more visual, higher resolution, operating frequency also improves day by day, wishes that transducer material has larger K
t/ K
pratio and lower
with
the K of PZT base pottery, potassium-sodium niobate and sodium niobate lithium pottery
t/ K
pratio is all little.PbTiO
3though meet above-mentioned condition with lead meta-columbute, the former
too large, the latter's K
ton the low side, and agglutinating property is very poor, and in ultrasonic inspection and medical ultrasonic engineering, application is all not satisfied.In addition, at process aspect, PZT pottery volatilizees because of PbO, must use corundum crucible sealed sintering, and this causes that homogeneity of product is poor, and cost is high, and particularly lead causes public hazards, increases protection expense.Niobate ceramics raw material are too expensive.
The object of the invention is to find a kind of completely lead-free Na of ratio that has
0.5bi
0.5tiO
3-K
0.5bi
0.5tiO
3be larger K
t/ K
pratio is lower
with
cost is low, non-harmful piezoceramic material system.
The invention provides a piezoceramic material system, consist of XNa
0.5bi
0.5tiO
3-(1-x) BaTiO
3, wherein X is 0.80～0.99 gram molecule (Fu Na district).In addition, also add or do not add respectively the MnO of 0.1～3% (weight)
2, Cr
2o
2, NiO and Fe
2o
3that X is 0.89～0.99 gram molecule Deng the preferential recommended range of modified materials.
Use TiO
2, Bi
2o
3, natrium carbonicum calcinatum, brium carbonate and above-mentioned additive are made raw material (except TiO
2brium carbonate is outside industrial one-level, all the other raw materials are all CP levels), batching, adds absolute alcohol ball milling and mixes 6 hours, after dry, within 1～4 hour, synthesize 800～1150 ℃ of insulations, grog is levigate with ball milling or comminution by gas stream, adds the dry-pressing formed base sample of adhesive, open wide and burn till in atmosphere at 1080～1220 ℃, be incubated 1～4 hour.Then wear into the sample of φ 17 × 1mm, by silver, polarization, by the piezoelectric parameter of IRE canonical measure sample.Table 1 is listed Na
05bi
0.5tiO
3-BaTiO
3series piezoelectric ceramic part formula and performance thereof.Table 2 is listed mainly ferroelectric, the piezoelectric parameter of optimum formula.
As can be seen from Table 1, Na
0.5bi
0.5tiO
3-BaTiO
3the feature of Xi Funa district piezoceramic material is K
thigher, K
pquite low, K
t/ K
pthan large, higher Nt and Curie temperature are lower
and bulk density.
As can be seen from Table 2, this piezoelectric ceramic has high K
t, large K
t/ K
pratio, high g
33and frequency constant, quite low
with
it is goodish material for ultrasonic transducer.Be expected in ultrasonic inspection, in thickness measuring and medical ultrasonic engineering, be widely used.These performances of this material are not only better than PZT or K
0.5na
0.5nbO
2deng material, and compare Na
0.5bi
0.5tiO
2-K
0.5bi
0.5tiO
3the piezoelectric ceramic of system's (being called for short NKBT) is better, for example K
t/ K
pthan larger, approach 3, and NKBT pottery is less than 2,
be less than 300, and NKBT is greater than 400, particularly this kind ceramic
quite low, except lead meta-columbute, there is large K simultaneously
1/ K
pratio and little
piezoelectric ceramic, all do not have low like this
value.And the K of lead meta-columbute
tvalue (0.4 left and right) insufficient sensitivity on the low side is high, so this pottery has very important value in ultrasonic reception.
Na
0.5bi
0.5tiO
2-BaTiO
3system's pottery is same in technologic advantage and NKBT ceramic phase, and its cost of material is low, there is no public hazards.The sintering temperature of this system pottery is low, and component volatilization is little does not need sealed sintering, thus be that a kind of technique is simple, the lower and non-harmful piezoceramic material of cost.
Implementation example of the present invention:
Formula: 0.85Na
0.5bi
0.1tiO
2-0.15BaTiO
3(X=0.85)
Technical process as previously mentioned.Synthesis condition be 1000 ℃ 2 hours.Firing condition is 1150～1190 ℃ of insulations 3 hours.Base sample is worn into the disk of φ 17 × 1mm, by silver, in the silicone oil of 150 ℃, adds the electric field polarization half an hour of 4KV/mm, maintains voltage and is chilled to 100 ℃ of taking-ups.Its main performance is K
t: 0.46, K
p: 0.13,
475, N
t: 2600Hzm, Te:235 ℃, bulk density: 5.60g/cm
3.
Table 1Na
0.5bi
0.5tiO
3-BaTiO
3series piezoelectric ceramic formula and main performance
Mainly ferroelectric, the piezoelectric parameter of table 2 optimum formula
Claims (3)
1. a binary system piezoceramic material, contains Na
0.5bi
0.5tiO
3and BaTiO
3, consist of XNa
0.5bi
0.5tiO
3-(1-x) BaTiO
3, it is characterized in that X is 0.80～0.99 gram molecule (Fu Na district), in addition, also add or do not add respectively the oxide of 0.1～3% (weight).
2. piezoceramic material according to claim 1, is characterized in that the oxide adding is MnO
2, Fe
2o
3, Cr
2o
3or NiO.
3. piezoceramic material according to claim 1, is characterized in that X value is 0.89～0.99 gram molecule (Fu Na district).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100513A CN85100513B (en) | 1985-04-01 | 1985-04-01 | Bismuth sodium barium titanate series piezoelectric ceramic material for ultrasound |
| JP61072657A JPS62202576A (en) | 1985-04-01 | 1986-04-01 | Piezoelectric ceramics and their manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100513A CN85100513B (en) | 1985-04-01 | 1985-04-01 | Bismuth sodium barium titanate series piezoelectric ceramic material for ultrasound |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85100513A CN85100513A (en) | 1986-08-13 |
| CN85100513B true CN85100513B (en) | 1987-08-19 |
Family
ID=4791220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85100513A Expired CN85100513B (en) | 1985-04-01 | 1985-04-01 | Bismuth sodium barium titanate series piezoelectric ceramic material for ultrasound |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS62202576A (en) |
| CN (1) | CN85100513B (en) |
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| CN100341590C (en) * | 2004-10-15 | 2007-10-10 | 洪克森 | Material for rehabilitation therapy capable of emitting biological photon wave spectrum |
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-
1985
- 1985-04-01 CN CN85100513A patent/CN85100513B/en not_active Expired
-
1986
- 1986-04-01 JP JP61072657A patent/JPS62202576A/en active Granted
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| CN100341590C (en) * | 2004-10-15 | 2007-10-10 | 洪克森 | Material for rehabilitation therapy capable of emitting biological photon wave spectrum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85100513A (en) | 1986-08-13 |
| JPH0460073B2 (en) | 1992-09-25 |
| JPS62202576A (en) | 1987-09-07 |
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