CN101376594A - Niobium niobium antimony sodiate potassium leadless piezoelectric ceramic composition - Google Patents
Niobium niobium antimony sodiate potassium leadless piezoelectric ceramic composition Download PDFInfo
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- CN101376594A CN101376594A CNA2007101471647A CN200710147164A CN101376594A CN 101376594 A CN101376594 A CN 101376594A CN A2007101471647 A CNA2007101471647 A CN A2007101471647A CN 200710147164 A CN200710147164 A CN 200710147164A CN 101376594 A CN101376594 A CN 101376594A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 64
- 239000000203 mixture Substances 0.000 title claims abstract description 34
- 229910052700 potassium Inorganic materials 0.000 title claims description 9
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 title claims description 5
- NJELIKGYALYKIS-UHFFFAOYSA-N [Sb].[Nb].[Nb] Chemical compound [Sb].[Nb].[Nb] NJELIKGYALYKIS-UHFFFAOYSA-N 0.000 title claims description 5
- 239000011591 potassium Substances 0.000 title claims description 5
- 239000010955 niobium Substances 0.000 claims description 44
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- JCLFHZLOKITRCE-UHFFFAOYSA-N 4-pentoxyphenol Chemical compound CCCCCOC1=CC=C(O)C=C1 JCLFHZLOKITRCE-UHFFFAOYSA-N 0.000 claims description 6
- 239000010953 base metal Substances 0.000 claims description 6
- 229910052797 bismuth Inorganic materials 0.000 claims description 6
- 229910052787 antimony Inorganic materials 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 4
- 229910052691 Erbium Inorganic materials 0.000 claims description 4
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 4
- 229910052779 Neodymium Inorganic materials 0.000 claims description 4
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 4
- 229910052772 Samarium Inorganic materials 0.000 claims description 4
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910052788 barium Inorganic materials 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052738 indium Inorganic materials 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052706 scandium Inorganic materials 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 229910052712 strontium Inorganic materials 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- 229910052718 tin Inorganic materials 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000006104 solid solution Substances 0.000 abstract description 3
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical group 0.000 abstract 1
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910052726 zirconium Inorganic materials 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005621 ferroelectricity Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910013641 LiNbO 3 Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- -1 moulding Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The invention provides lead-free sodium potassium niobate antimonate piezoelectric ceramic composition. The composition is lead-free piezoelectric ceramic solid solution formed by introducing high electronegativity Sb part into the B position of alkali metal niobate ferroelectrics (Na1-xKx) NbO3 with ABO3 type perofskite structure to replace Nb. The lead-free piezoelectric ceramic composition has the advantages that the piezoelectric performance is excellent, the Curie temperature is high, the thermostability of the piezoelectric performance is good, the preparation technique is stable, the composition is obtained by adopting tradition piezoelectric ceramics, the sintering temperature is low, and the compactness is good.
Description
Technical field
The present invention relates to a kind of piezoelectric ceramic composition, particularly relate to a kind of novel polynary system columbate leadless piezoelectric ceramic composition.
Background technology
From the piezoelectricity of middle 1940s discovery barium titanate ceramics, particularly have Pb-based lanthanumdoped zirconate titanates Pb (Ti, Zr) O of excellent piezoelectric property and high-curie temperature
3After pottery was succeeded in developing, constitutional features was ABO
3The research and development of the lead-based perovskite piezoelectric ceramics of type are very active, and piezoelectric ceramics and piezoelectric ceramic devices have been widely used in particularly information industry field of industry.With Pb (Ti, Zr) O
3For the lead base two component system of representative with Pb-based lanthanumdoped zirconate titanates (Pb (Ti, Zr) O
3) be base, add the 3rd constituent element [as with lead magnoniobate (Pb (Mg
1/3Nb
2/3) O
3) for representative] and the lead base ternary system piezoelectric ceramic have good piezoelectricity ferro performance, high Curie temperature.The piezoelectric ceramics overwhelming majority who uses in the industrial production is such lead base piezoelectric ceramics.
But, in the lead base piezoceramic material, PbO or Pb
3O
4Content account for 70% of raw material total amount.Lead contamination has become one of human public hazards.The lead base piezoelectric ceramics produce, use and discarded last handling process in cause serious harm for the mankind and ecotope, be unfavorable for the Sustainable development of human society.In recent years, exploitation piezoelectric ceramics system lead-free, superior performance is subjected to the particularly pay attention to day by day of America and Europe, Japan, Korea S and China of countries in the world.
The leadless piezoelectric ceramics system of broad research has four classes at present: bismuth laminated leadless piezoelectric ceramic, BaTiO
3Based leadless piezoelectric ceramics, Bi
0.5Na
0.5TiO
3Based leadless piezoelectric ceramics and base metal niobate leadless piezoelectric ceramics.Bismuth laminated leadless piezoelectric ceramic Curie temperature height, anisotropy is big, but piezoelectric activity is low; BaTiO
3The base piezoelectric ceramic Curie temperature is 120 ℃ only, and piezoelectric property is medium; Bi
0.5Na
0.5TiO
3The based leadless piezoelectric ceramics piezoelectricity is strong and be easy to modification and improve piezoelectric property, but near second phase transformation 210 ℃ causes the umpolarization temperature to be lower than 210 ℃, often follow the serious reduction of umpolarization temperature when modification improves piezoelectric property, be difficult under higher temperature, use; Simple base metal niobate leadless piezoelectric ceramics (Na
1-xK
x) NbO
3Piezoelectric constant is low, be difficult to obtain fine and close pottery by the traditional ceramics technology of preparing, but its have ferroelectricity strong, become leadless piezoelectric ceramics research focus up to 420 ℃ Curie temperature and electromechanical coupling factor are big.
Na
1-xK
xNbO
3Be ferroelectrics KNbO
3With antiferroelectric NaNbO
3Solid solution and the ABO that forms
3Type uhligite ferroelectrics has that ferroelectricity is strong, Curie temperature is high and advantage such as electromechanical coupling factor is big.Traditional ceramics technology can not make fine and close high performance Na
1-xK
xNbO
3Document 1 (J.Am.Ceram.Soc.42 (9), 438 (1959)) has provided the K of traditional ceramics prepared
0.5Na
0.5NbO
3Pottery, d
33=80pC/N, k
p=0.36, T
c=420 ℃, ρ=4.25g/cm
3Document 2 (J.Am.Ceram.Soc.45 (5), 209 (1962)) has provided hot pressed K
0.5Na
0.5NbO
3Pottery, d
33=160pC/N, k
p=0.45, ρ=4.46g/cm
3It is Na that document 3 (Appl.Phys.Lett.85,4121 (2004)) has provided composition formula
0.5K
0.5NbO
3-LiNbO
3The leadless piezoelectric ceramics system, d
33=230pC/N, k
p=0.44; It is Na that document 4 (Mater.Lett.59,241 (2005)) has provided composition formula
0.5K
0.5NbO
3-LiTaO
3The leadless piezoelectric ceramics system, d
33=200pC/N, k
p=0.36; Document 5 (piezoelectricity and acousto-optic, Vol.28, No.1, p60) having provided composition formula is Na
0.5K
0.5NbO
3-LiTaO
3The leadless piezoelectric ceramics system, d
33=134pC/N, k
p=0.33 (promptly 33%).
Summary of the invention
Purpose of the present invention is exactly in order to overcome the inherent defective of existing lead base piezoelectric ceramics system own, improves existing base metal niobate leadless piezoelectric ceramics performance, has proposed the novel lead-free piezoelectric ceramic composition of a class.Such lead-free piezoelectric ceramic composition adopts the traditional ceramics prepared, has good piezoelectric property, the Curie temperature height, and Heat stability is good has practicality.
For realizing purpose of the present invention, according to Na
1-xK
xNbO
3Inherent characteristics own and ABO
3The structure of type base metal niobate and physicochemical characteristic the present invention is directed to ABO
3The perovskite typed piezoelectrics Na of structure
1-xK
xNbO
3, introduce high electronegative Sb in the B position and partly replace Nb and form novel leadless piezoelectric ceramics sosoloid.Such novel perovskite structure lead-free piezoceramic material can be used general formula (Na
1-xK
x) (Nb
1-ySb
y) O
3Represent that x, y represent the atomicity that respective element is shared, i.e. atomicity per-cent, 0＜x in the formula＜1,0＜y≤0.1.
Specifically, the invention provides a kind of niobium niobium antimony sodiate potassium leadless piezoelectric ceramic composition, wherein, described composition is at ABO
3Base metal niobate ferroelectrics (the Na of type perovskite structure
1-xK
x) NbO
3The B position introduce high electronegative Sb and partly replace Nb and form novel leadless piezoelectric ceramics sosoloid.
The above-mentioned lead-free piezoelectric ceramic composition according to the present invention, wherein said composition can be used general formula (Na
1-xK
x) (Nb
1-ySb
y) O
3Represent 0＜x in the formula＜1,0＜y≤0.1.
The above-mentioned lead-free piezoelectric ceramic composition according to the present invention, wherein said composition has further added one or more by M
αO
βThe doping oxide of expression, wherein M represent+1 valency is to+6 valencys and can form the element of solid-oxide with oxygen, α and β represent the atomicity of corresponding element M and oxygen in the relevant oxide compound respectively.Preferably, described element M is selected from Na, K, Li, Ni, Zn, Cr, Co, Nb, Ta, Al, Cu, Fe, Ce, Pr, Nd, Sm, Gd, Dy, Er, Yb, In, Y, Sc, La, Ho, Lu, Sn, Sb, Mn, Ca, Ba, Sr, Mg, Si, Bi or Ag.More preferably, described element M is selected from Mn or Cu.
The piezoceramic material that the present invention proposes can also be added oxide compound (being base-material+hotchpotch) to be made up of the base-material that the front general formula is represented, makes some optimizing performance parameters.Can represent by following general formula according to lead-free piezoelectric ceramic composition of the present invention:
(Na
1-xK
x)(Nb
1-ySb
y)O
3((100-a)mol％)+M
αO
β(amol％)
Above-mentioned a anticipates promptly:
A=0-3 wherein.Preferably, described element M is selected from Na, K, Li, Ni, Zn, Cr, Co, Nb, Ta, Al, Cu, Fe, Ce, Pr, Nd, Sm, Gd, Dy, Er, Yb, In, Y, Sc, La, Ho, Lu, Sn, Sb, Mn, Ca, Ba, Sr, Mg, Si, Bi or Ag.More preferably, described element M is selected from Mn or Cu.
Polynary lead-free piezoelectric ceramics composition of the present invention has good piezoelectric property and high Curie temperature, through material properties test, and piezoelectric constant d
33All more than 100pC/N, Gao Zheke reaches more than the 200pC/N, electromechanical coupling factor k
pAll more than 29%, Gao Zheke reaches more than 50%, electromechanical coupling factor k
tAll more than 24%, Gao Zheke reaches more than 51%, Curie temperature T
cBe 221-421 ℃.
The present invention is at (Na
1-xK
x) NbO
3The B position introduce high electronegative Sb, Nb is partly replaced formed leadless piezoelectric ceramics Solid solution.The inventor finds that also an amount of additive has produced tangible strengthening effect to the performance, particularly density of material.Particularly add MnO
2, form (Na
0.5K
0.5) (Nb
0.94Sb
0.06) O
3((100-a) mol%)+MnO
2(amol%), can significantly improve the density of pottery, test-results is asked for an interview Fig. 4.
Advantage of the present invention is: piezoelectric property is good; The Curie temperature height; The piezoelectric property Heat stability is good; Stable preparation process adopts the conventional piezoelectric ceramics processing to obtain; Sintering temperature is low, is about 1100-1150 ℃.
Description of drawings
Fig. 1 is that the present invention records (a) (Na
0.5K
0.5) (Nb
1-ySb
y) O
3(99.5mol%)+MnO
2(0.5mol%) the Curie temperature T of leadless piezoelectric ceramics
cAnd quadrature ferroelectric-cubic ferroelectric transition temperature T
O-TRelation with the molar content y of Sb; (b) (Na
1-xK
x) (Nb
0.94Sb
0.06) O
3(99.5mol%)+MnO
2(0.5mol%) the Curie temperature T of leadless piezoelectric ceramics
cAnd quadrature ferroelectric-cubic ferroelectric transition temperature T
O-TRelation with the molar content x of K;
Fig. 2 is that the present invention records (K
0.5Na
0.5) (Nb
0.94Sb
0.06) O
3(99.5mol%)+MnO
2(0.5mol%) leadless piezoelectric ceramics is at 1kHz, specific inductivity-temperature curve of 10kHz and 100kHz;
Fig. 3 is that the present invention records (K
0.5Na
0.5) (Nb
0.97Sb
0.03) O
3(99.5mol%)+MnO
2(0.5mol%) with (K
0.5Na
0.5) (Nb
0.94Sb
0.06) O
3(99.5mol%)+MnO
2(0.5mol%) leadless piezoelectric ceramics ferroelectric hysteresis loop at room temperature.
Fig. 4 shows MnO
2Addition is to (Na
0.5K
0.5) (Nb
0.94Sb
0.06) O
3The influence of ceramic dense.
Embodiment
Below, in conjunction with specific embodiments, the present invention is described in further detail.But, should be appreciated that following embodiment is not meant to limit the present invention.
As optional, typical preparation method, prepare leadless piezoelectric ceramics of the present invention and can adopt technical pure or chemical pure, and be commercially available obtainable Na
2CO
3, K
2CO
3, Sb
2O
3Or Sb
2O
5, Nb
2O
5, CuO etc. can be with M
αO
βThe raw material of expression is pressed general formula (Na
1-xK
x) (Nb
1-ySb
y) O
3((100-a) mol%)+M
αO
β(amol%) stoichiometric ratio raw materials weighing, (Na
1-xK
x) (Nb
1-ySb
y) O
3Part in the alumina crucible of packing into, is carried out pre-burning at 800-900 ℃ behind abundant ball milling mixing, soaking time is 6 hours.The property-modifying additive M that adds amol% in the pre-burning synthetic powder through grinding
αO
β, levigate through ball milling again, thorough mixing, adding additives, moulding, plastic removal are at last at 1100-1150 ℃ of following sintering 2-6 hour.Ceramic plate behind the sintering is by last silver electrode, and in 150-200 ℃ silicone oil, polarization is 30-40 minute under the voltage of 4-6kV/mm.
With reference to above method, according to the formulation system (Na of following examples
1-xK
x) (Nb
1-ySb
y) O
3((100-a) mol%)+M
αO
β(amol%) leadless piezoelectric ceramics, and the performance index of mensuration product.
Embodiment 1:
Prescription: (Na
0.5K
0.5) (Nb
0.99Sb
0.01) O
3(99.5mol%)+MnO
2(0.5mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％) T
c(℃)
114 325 46.2 48.8 406
Embodiment 2:
Prescription: (Na
0.5K
0.5) (Nb
0.97Sb
0.03) O
3(99.5mol%)+MnO
2(0.5mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％) T
c(℃)
128 409 46.3 48.7 385
Embodiment 3:
Prescription: (Na
0.5K
0.5) (Nb
0.94Sb
0.06) O
3(99.5mol%)+MnO
2(0.5mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％) T
c(℃)
176 665 50.8 51.5 316
Embodiment 4:
Prescription: (Na
0.5K
0.5) (Nb
0.93Sb
0.07) O
3(99.5mol%)+MnO
2(0.5mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％) T
c(℃)
204 827 48.2 50.5 291
Embodiment 5:
Prescription: (Na
0.5K
0.5) (Nb
0.90Sb
0.10) O
3(99.5mol%)+MnO
2(0.5mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％) T
c(℃)
144 991 29.9 24.3 221
Embodiment 6:
Prescription: (Na
0.65K
0.35) (Nb
0.94Sb
0.06) O
3(99.5mol%)+MnO
2(0.5mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％) T
c(℃)
108 719 30.7 25.7 312
Embodiment 7:
Prescription: (Na
0.60K
0.40) (Nb
0.94Sb
0.06) O
3(99.5mol%)+MnO
2(0.5mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％) T
c(℃)
149 706 39.2 42.2 310
Embodiment 8:
Prescription: (Na
0.55K
0.45) (Nb
0.94Sb
0.06) O
3(99.5mol%)+MnO
2(0.5mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％) T
c(℃)
167 693 47.2 45.7 315
Embodiment 9:
Prescription: (Na
0.525K
0.475) (Nb
0.94Sb
0.06) O
3(99.5mol%)+MnO
2(0.5mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％) T
c(℃)
178 640 50.0 50.8 314
Embodiment 10:
Prescription: (Na
0.40K
0.60) (Nb
0.94Sb
0.06) O
3(99.5mol%)+MnO
2(0.5mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％) T
c(℃)
159 619 45.5 45.4 315
Embodiment 11:
Prescription: (Na
0.30K
0.70) (Nb
0.94Sb
0.06) O
3(99.5mol%)+MnO
2(0.5mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％) T
c(℃)
117 593 35.4 38.8 318
Embodiment 12:
Prescription: (Na
0.50K
0.50) (Nb
0.94Sb
0.06) O
3
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％)
146 836 33.1 40.3
Embodiment 13:
Prescription: (Na
0.50K
0.50) (Nb
0.94Sb
0.06) O
3(99.75mol%)+MnO
2(0.25mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％)
151 857 34.7 42.2
Embodiment 14:
Prescription: (Na
0.50K
0.50) (Nb
0.94Sb
0.06) O
3(99.25mol%)+MnO
2(0.75mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％)
165 664 47.4 47.4
Embodiment 15:
Prescription: (Na
0.50K
0.50) (Nb
0.94Sb
0.06) O
3(99.0mol%)+MnO
2(1.00mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％)
163 642 46.7 47.5
Embodiment 16:
Prescription: (Na
0.50K
0.50) (Nb
0.94Sb
0.06) O
3(98.5mol%)+MnO
2(1.50mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％)
145 614 45.3 45.1
Embodiment 17:
Prescription: (Na
0.50K
0.50) (Nb
0.94Sb
0.06) O
3(97mol%)+MnO
2(3mol%)
Performance:
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％)
115 423 33.5 37.2
Embodiment 18:
Prescription: (Na
0.50K
0.50) (Nb
0.94Sb
0.06) O
3(99mol%)+CuO (1mol%)
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％)
141 565 43.1 44.6
Embodiment 19:
Prescription: (Na
0.50K
0.50) (Nb
0.94Sb
0.06) O
3(99mol%)+MnO
2(0.75mol%)+CuO (0.25mol%)
d
33(pC/N) ε
33/ε
0 k
p(％) k
t(％)
155 651 43.5 45.4
From above test-results as seen, niobium niobium antimony sodiate potassium leadless piezoelectric ceramic composition of the present invention has the beneficial effect of obvious improvement.
Claims (8)
1, niobium niobium antimony sodiate potassium leadless piezoelectric ceramic composition is characterized in that, described composition is at ABO
3Base metal niobate ferroelectrics (the Na of type perovskite structure
1-xK
x) NbO
3The B position introduce that high electronegative Sb partly replaces Nb and the leadless piezoelectric ceramics sosoloid that forms.
2, lead-free piezoelectric ceramic composition as claimed in claim 1 is characterized in that, described composition is with general formula (Na
1-xK
x) (Nb
1-ySb
y) O
3Expression, 0＜x in the formula＜1,0＜y≤0.1.
As the lead-free piezoceramic material composition of claim 1 or 2, it is characterized in that 3, described composition has further added one or more by M
αO
βThe doping oxide of expression, wherein M represent+1 valency is to+6 valencys and can form the element of solid-oxide with oxygen.
4, lead-free piezoelectric ceramic composition as claimed in claim 3 is characterized in that described element M is selected from Na, K, Li, Ni, Zn, Cr, Co, Nb, Ta, Al, Cu, Fe, Ce, Pr, Nd, Sm, Gd, Dy, Er, Yb, In, Y, Sc, La, Ho, Lu, Sn, Sb, Mn, Ca, Ba, Sr, Mg, Si, Bi or Ag.
5, lead-free piezoelectric ceramic composition as claimed in claim 4 is characterized in that described element M is selected from Mn or Cu.
6, lead-free piezoelectric ceramic composition as claimed in claim 3 is characterized in that, it is represented by following general formula:
(Na
1-xK
x) (Nb
1-ySb
y) O
3((100-a) mol%)+M
αO
β(amol%) a=0-3 wherein.
7, lead-free piezoelectric ceramic composition as claimed in claim 6 is characterized in that described element M is selected from Na, K, Li, Ni, Zn, Cr, Co, Nb, Ta, Al, Cu, Fe, Ce, Pr, Nd, Sm, Gd, Dy, Er, Yb, In, Y, Sc, La, Ho, Lu, Sn, Sb, Mn, Ca, Ba, Sr, Mg, Si, Bi or Ag.
8, lead-free piezoelectric ceramic composition as claimed in claim 7 is characterized in that described element M is selected from Mn or Cu.
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