摘要:
A piezoelectric ceramic composition is provided which contains Perovskite oxides expressed by General Formula 1 below and an aluminum compound, and in which the content ratio of the aluminum compound to the Perovskite oxides is from 1% by mass to 11% by mass, (Pbα-β-γ-δM1βM2γBiδ)[Ti{1-(x+y+z)}ZrxMnyNbz]O3 (1) wherein in the General Formula (1), M1 represents at least one kind of element selected from the group consisting of La, Ce, Pr, and Nd, M2 represents at least one kind of element selected from the group consisting of Sr, Ca, and Ba, and α, β, γ, δ, x, y, and z satisfy the following numerical conditions: 0.96≦α≦1.01 0.03≦β≦0.07 0≦γ≦0.10 0≦δ≦0.02 0≦x≦0.24 0.02≦y≦0.04 0.03≦z≦0.08
摘要:
Provided is a piezoelectric ceramic composition which enables the attainment of sufficiently high Qmax and good temperature characteristics of oscillation frequency F0 when applied in an oscillator utilizing third harmonic mode of thickness longitudinal vibration. The piezoelectric ceramic composition contains a composite oxide having a perovskite structure. The composite oxide has a composition expressed by the chemical formula (1), while satisfying 0.91≦α≦1.00, 0
摘要:
Provided is a piezoelectric ceramic composition which can increase Qmax of a resonator and inhibit the resonator from changing its oscillation frequency F0 under a low temperature environment. The piezoelectric ceramic composition has a structure represented by the following general formula (1): (PbαLnβMeγ)(Ti1−(x+y+z)ZrxMnyNbz)O3 (1) where Ln is a lanthanoid element, Me is an alkaline-earth metal element, α>0, β>0, γ≧0, 0.965≦α+β+γ≦1.000, 0.158≦x≦0.210, y≧0, z≧0, and 1−(x+y+z)>0.
摘要翻译:提供一种可以增加谐振器的Qmax并且抑制谐振器在低温环境下改变其振荡频率F0的压电陶瓷组合物。 压电陶瓷组合物具有由以下通式(1)表示的结构:(PbαLn&bgr;Meγ)(Ti1-(x + y + z)ZrxMnyNbz)O3(1)其中Ln是镧系元素,Me是碱 - 地球金属元素,α> 0,&bgr;> 0,γ≥0,0.965≦̸α+&bgr; +γ≦̸ 1.000,0.158≦̸ x< lll; 0.210,y≥0,z≥0和1-(x + y + z)> 0。
摘要:
Provided is a piezoelectric ceramic composition which can increase Qmax of a resonator and inhibit the resonator from changing its oscillation frequency F0 under a low temperature environment. The piezoelectric ceramic composition has a structure represented by the following general formula (1): (PbαLnβMeγ)(Ti1−(x+y+z)ZrxMnyNbz)O3 (1) where Ln is a lanthanoid element, Me is an alkaline-earth metal element, α>0, β>0, γ≧0, 0.965≦α+β+γ≦1.000, 0.158≦x≦0.210, y≧0, z≧0, and 1−(x+y+z)>0.
摘要翻译:提供一种可以增加谐振器的Qmax并且抑制谐振器在低温环境下改变其振荡频率F0的压电陶瓷组合物。 压电陶瓷组合物具有由以下通式(1)表示的结构:(PbαLn&bgr;Meγ)(Ti1-(x + y + z)ZrxMnyNbz)O3(1)其中Ln是镧系元素,Me是碱 - 地球金属元素,α> 0,&bgr;> 0,γ≥0,0.965≦̸α+&bgr; +γ≦̸ 1.000,0.158≦̸ x< lll; 0.210,y≥0,z≥0和1-(x + y + z)> 0。
摘要:
To provide a method for producing a piezoelectric ceramic which can improve toughness thereof. Provided is a method for producing a piezoelectric ceramic which includes a step of polarizing a piezoelectric ceramic having a main component represented by a composition formula Pba[(MnbNbc)dTieZrf]O3, wherein a to f satisfy 0.98≦a≦1.01, 0.340≦b≦0.384, 0.616≦c≦0.660, 0.08≦d≦0.12, 0.500≦e≦0.540, 0.37≦f≦0.41, and bd+cd+e+f=1, and 1 to 10% by weight of Al in terms of Al2O3 as an additive, and heat-treating the polarized piezoelectric ceramic for 10 to 60 minutes in a range of 200 to 300° C. As a result of this heat treatment, toughness of the piezoelectric ceramic can be improved.
摘要翻译:提供一种能够提高其韧性的压电陶瓷的制造方法。 提供一种制造压电陶瓷的方法,其包括使由组成式Pba [(MnbNbc)dTieZrf] O 3表示的主要成分的压电陶瓷极化的步骤,其中a至f满足0.98 <= a <= 1.01,0.340 <= b <= 0.384,0.616 <= c <= 0.660,0.08 <= d <= 0.12,0.500 <= e <= 0.540,0.37 <= f <= 0.41和bd + cd + e + f = 以Al 2 O 3作为添加剂的Al为1〜10重量%,在200〜300℃的范围内对极化压电陶瓷进行10〜60分钟的热处理。作为该热处理的结果, 可以改善压电陶瓷。
摘要:
To obtain a piezoelectric ceramic composition having extremely high heat resisting property. Provided is a piezoelectric ceramic composition comprising a main component represented by Pba[(MnbNbc)dTieZrf]O3 (wherein 0.98≦a≦1.01, 0.340≦b≦0.384, 0.616≦c≦0.660, 0.08≦d≦0.12, 0.500≦e≦0.540, 0.37≦f≦0.41, bd+cd+e+f=1), and 1 to 10% by weight of Al in terms of Al2O3 as an additive. Preferably, b is such that 0.345≦b≦0.375 and c is such that 0.625≦c≦0.655, and the Al as the additive is preferably 2 to 6% by weight in terms of Al2O3.
摘要翻译:得到具有极高耐热性的压电陶瓷组合物。 本发明提供一种压电陶瓷组合物,其包含以下组分表示的主要成分:[(N,B)Nb C' (其中0.98 <= a <= 1.01,0.340 <= b <= 0.384,0.616 <= c 根据这个术语,<= 0.660,0.08 <= d <= 0.12,0.500 <= e <= 0.540,0.37 <= f <= 0.41,bd + cd + e + f = 1)和1〜10重量% 的Al 2 O 3 3作为添加剂。 优选地,b为0.345≤b≤0.375,c为0.625 <= c <= 0.655,作为添加剂的Al优选为2〜6重量% 3&gt; 3&lt; 3&gt ;.
摘要:
A piezoelectric ceramic composition excellent in heat resisting properties is provided. In the piezoelectric ceramic composition including a perovskite compound containing Pb, Zr and Ti as main components, the piezoelectric ceramic composition is made to include Cr as an additive from 0.025 to 0.250 wt % in terms of Cr2O3. In the piezoelectric ceramic composition of the present invention, Δk15 (here, Δk15 is the rate of change in electromechanical coupling factor k15, caused by external thermal shock), of the piezoelectric ceramic composition can be controlled to 3.0% or less in absolute value.
摘要翻译:提供耐热性优异的压电陶瓷组合物。 在包含以Pb,Zr和Ti为主要成分的钙钛矿化合物的压电陶瓷组合物中,压电陶瓷组合物包含Cr作为添加剂,以Cr 2 O 2计为0.025〜0.250重量% 3 SUB>。 在本发明的压电陶瓷组合物中,可以将压电陶瓷组合物的Deltak15(这里,Deltak15是由外部热冲击引起的机电耦合系数k15的变化率)控制在3.0%以下。
摘要:
There are provided steps of polarizing a ceramic composition including a perovskite compound containing Pb, Zr, Ti and Mn as main components and a heat treatment step for keeping the polarized ceramic composition within a temperature range lower than Tc (Tc denoting the Curie temperature of the ceramic composition) for 1 to 100 minutes.
摘要:
A piezoelectric ceramic composition excellent in all of the electric property Qmax, heat resisting properties and temperature characteristics of oscillation frequencies is provided. The piezoelectric ceramic composition comprises a phase mainly comprising lead zirconate titanate having a perovskite structure and an Al-containing phase. In the piezoelectric ceramic composition, the main component preferably comprises Mn and Nb, and is preferably represented by a composition formula of Pbα[(Mn1/3Nb2/3)xTiyZrz]O3 (wherein 0.97≦α≦1.01, 0.04≦x≦0.16, 0.48≦y≦0.58, 0.32≦z≦0.41).
摘要:
The present invention has an object to provide piezoelectric ceramics containing no lead, having a high Curie point, and further, having excellent piezoelectric properties, particularly large Qmax. The piezoelectric ceramics contain, as a main component, a bismuth layer-structured compound having (MII1-xLnx)Bi4Ti4O15 crystals (MII is an element selected from Sr, Ba, and Ca, Ln is an element selected from lanthanoids, and x is within a range of 0
摘要翻译:本发明的目的是提供一种不具有高居里点的不含铅的压电陶瓷,并且还具有优异的压电性能,特别大的Qmax。 作为主要成分的压电陶瓷含有具有(M 1,X 2)1-x L n x L z)Bi Bi的铋层结构化合物 > 4 sub> 5 sub> 15 sub> 15 sub> 15 sup>是从Sr,Ba和Ca中选出的一种元素,Ln是 元素,其选自镧系元素,x在0