摘要:
Provided is a piezoelectric ceramic composition capable of being sintered at low temperatures and in a low-oxygen reductive atmosphere and capable of attaining a sufficient displacement even at high voltages of 1 kV/mm or more. The piezoelectric ceramic composition includes: a composite oxide, as a main constituent thereof, represented by the following composition formula; Cu and/or Ag, each as a first additive, Cu being included in a content α, in terms of Cu2O, falling within a range 0
摘要翻译:提供一种压电陶瓷组合物,其能够在低温和低氧还原气氛中烧结,并且即使在1kV / mm以上的高电压下也能够获得足够的位移。 压电陶瓷组合物包括:作为其主要成分的复合氧化物,由以下组成式表示; Cu和/或Ag,每个作为第一添加剂,Cu以包含在Cu 2 O中的含量α中包含在0 <α≤0.5质量%的范围内,并且Ag被包含在含量β中 Ag2O,相对于主要成分为0 <β≤0.4质量%范围内; 其中:组成式:Pba [(Zn1 / 3Nb2 / 3)xTiyZrz] O3,其中0.96 <= a <= 1.03,0.005 <= x <0.05,0.42≤y≤0.53,0.45≤z≤0.56, x + y + z = 1。
摘要:
Provided is a piezoelectric ceramic composition capable of being sintered at low temperatures and in a low-oxygen reductive atmosphere and capable of attaining a sufficient displacement even at high voltages of 1 kV/mm or more. The piezoelectric ceramic composition includes: a composite oxide, as a main constituent thereof, represented by the following composition formula; Cu and/or Ag, each as a first additive, Cu being included in a content α, in terms of Cu2O, falling within a range 0
摘要翻译:提供一种压电陶瓷组合物,其能够在低温和低氧还原气氛中烧结,并且即使在1kV / mm以上的高电压下也能够获得足够的位移。 压电陶瓷组合物包括:作为其主要成分的复合氧化物,由以下组成式表示; Cu和/或Ag,各自作为第一添加剂,Cu以包含在Cu 2 O 2中的含量α中,在0 <α≤0.5质量%的范围内,Ag为 相对于主要成分,包含在相对于主要成分的0 <β≤0.4质量%范围内的Ag 2 O 3的含量β中。 其中:组成式:Pb> [SUB x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 其中0.96 <= a <= 1.03,0.005 <= x <0.05,0.42 <= y <= 0.53, 0.45 <= z <= 0.56,x + y + z = 1。
摘要:
A piezoelectric ceramic composition has as a chief ingredient a composite oxide that has Pb, Ti and Zr as constituent elements. It contains as a first accessory ingredient at least one element selected from the group consisting of Mn, Co, Cr, Fe and Ni in an amount of 0.2 mass % or less excluding 0 mass % in terms of an oxide. As the first accessory ingredient, at least one species selected from the ingredients represented by CuOx, wherein x≧0, can be adopted. In this case, the content of the first accessory ingredient is 3.0 mass % or less excluding 0 mass %. The piezoelectric ceramic composition is fired under reducing and firing conditions. The reducing and firing conditions include a firing temperature in the range of 800° C. to 1200° C. and an oxygen partial pressure in the range of 1×10−10 to 1×10−6 atm., for example.
摘要:
For the purpose of preventing the degradation of the piezoelectric strain properties when Cu is used for internal electrodes, there is provided a piezoelectric ceramic composition including: a composite oxide, as a main constituent thereof, represented by (Pba-bMeb) [(Zn1/3Nb2/3)xTiyZrz]O3 with the proviso that 0.96≦a≦1.03, 0≦b≦0.1, 0.05≦x≦0.15, 0.25≦y≦0.5, 0.35≦z≦0.6, and x+y+z=1, and Me represents at least one selected from Sr, Ca and Ba; and at least one selected from Co, Mg, Ni, Cr and Ga as a first additive to the main constituent in a content of 0.5% by mass or less (not inclusive of 0) in terms of oxide, wherein an electrode made of Cu is to be disposed on the piezoelectric ceramic composition.
摘要翻译:为了防止Cu用于内部电极时的压电应变特性的降低,提供了一种压电陶瓷组合物,其包括:作为其主要成分的复合氧化物,由(Pb Sb) )((III / 3/3)Nb 2/3)x u> 条件是0.96 <= a <= 1.03,0 <= b <= 0.1,0.05 <= x <= 0.15, 0.25≤y≤0.5,0.35≤z≤0.6,x + y + z = 1,Me表示选自Sr,Ca和Ba中的至少一种; 和以Co,Mg,Ni,Cr和Ga中的至少一种为主要成分的第一添加剂,以氧化物换算为0.5质量%以下(不包括0),其中,由Cu 将被设置在压电陶瓷组合物上。
摘要:
A piezoelectric ceramic and a piezoelectric device capable of being fired at a low temperature and improving piezoelectric properties are provided. The piezoelectric ceramic and the piezoelectric device includes Pba[(Znb/3Nb2/3)xTiyZrz]O3 (where 0.94≦a≦1.02, 1
摘要翻译:提供了能够在低温下烧制并提高压电性能的压电陶瓷和压电器件。 压电陶瓷和压电装置包括Pb(IIIb),(ZnBb 3/3 Nb 3/3) (其中0.94 <= a <= 1.02,1&lt; b&lt; 3&gt; x + y + z&lt; 3&gt; = 1,0.05 <= x <0.125,0.275 u> > g / 3 Nb 2/3 3)Ti u> sub> sub> sub> > 3 <其中0.96 <= e <= 1.03,0.01 <= f <= 0.1,1
摘要:
A piezoelectric ceramic and a piezoelectric device capable of being fired at a low temperature and improving piezoelectric properties are provided. The piezoelectric ceramic and the piezoelectric device includes Pba[(Znb/3Nb2/3)xTiyZrz]O3 (where 0.94≦a≦1.02, 1
摘要翻译:提供了能够在低温下烧制并提高压电性能的压电陶瓷和压电器件。 压电陶瓷和压电装置包括Pb(IIIb),(ZnBb 3/3 Nb 3/3) (其中0.94 <= a <= 1.02,1&lt; b&lt; 3&gt; x + y + z&lt; 3&gt; = 1,0.05 <= x <0.125,0.275 u> > g / 3 Nb 2/3 3)Ti u> sub> sub> sub> > 3 <其中0.96 <= e <= 1.03,0.01 <= f <= 0.1,1
摘要:
A method of manufacturing a multilayer ceramic device capable of obtaining a superior multilayer ceramic device even if the number of layers increases or even if the multilayer ceramic device is upsized, and specifically suitable for manufacturing a multilayer piezoelectric device is provided. After a laminate in which ceramic precursor layers including a raw material of a ceramic layer and internal electrode precursor layers including copper metal as a raw material of an internal electrode layer are alternately stacked is formed, the laminate is heated to degrease the laminate. At this time, an atmospheric gas including an inert gas, 7 mol % to 50 mol % of water vapor, and, if necessary, hydrogen is used to adjust an oxygen partial pressure within a range of p(O2)≦(25331×Kp)2/3, where p(O2) represents an oxygen partial pressure; Kp represents a water dissociation equilibrium constant; and the pressure unit is Pa. Thereby, while the oxidation of copper metal can be prevented, a binder can be sufficiently decomposed and removed, and residual carbon can be reduced.
摘要:
A powder having a specific surface area of 1.8 to 11.0 m2/g was used as a powder to be sintered. Consequently, the powder has an improved sinterability, so that even by sintering at 1050° C. or lower, further at 1000° C. or lower, a piezoelectric ceramic having a high sintering density and desired piezoelectric properties can be obtained. The piezoelectric ceramic can have a main constituent represented by a composition formula (Pba1Aa2)[(Zn1/3Nb2/3)xTiyZrz]O3, wherein A represents at least one metal element selected from Sr, Ba and Ca, and 0.96≦a1+a2≦1.03, 0≦a2≦0.10, x+y+z=1, 0.05≦x≦0.40, 0.1≦y≦0.5 and 0.2≦z≦0.6.
摘要翻译:使用比表面积为1.8〜11.0m 2 / g的粉末作为烧结粉末。 因此,粉末具有改善的烧结性,因此即使在1050℃以下进一步在1000℃以下的烧结,也可以获得具有高烧结密度和所需压电特性的压电陶瓷。 压电陶瓷可以具有以下组成式表示的主要成分:(Z 1,N 2,N 2,N 2) 其中A表示至少一个或多个,其中A表示至少 一个选自Sr,Ba和Ca的金属元素和0.96 <= a1 + a2 <= 1.03,0 <= a2 <= 0.10,x + y + z = 1,0.05 <= x <= 0.40,0.1 <= y <= 0.5和0.2 <= z <= 0.6。
摘要:
A piezoelectric ceramic composition which has a large electromechanical coupling factor and is excellent in heat resisting properties is provided. As additives, Cr, Al and Si are contained together in the piezoelectric ceramic composition including a perovskite compound which contains Pb, Zr and Ti as main components. Preferably, Cr, Al and Si are respectively contained in a content of 0.05 to 0.50 wt % in terms of Cr2O3, in a content of 0.005 to 1.500 wt % in terms of Al2O3, and in a content of 0.005 to 0.100 wt % in terms of SiO2. By simultaneously including these three elements and setting the contents thereof to fall within the above mentioned ranges, the electromechanical coupling factor kt can be 30% or more, and ΔFr, which is the rate of change in resonant frequency Fr between before and after application of an external thermal shock, can be 0.5% or less in absolute value.
摘要翻译:提供了具有大的机电耦合系数并且耐热性优异的压电陶瓷组合物。 作为添加剂,包含Pb,Zr和Ti作为主要成分的钙钛矿型化合物的压电陶瓷组合物中含有Cr,Al,Si。 优选地,Cr,Al和Si分别以Cr 2 Al 3 O 3含量为0.05〜0.50重量%,含量为0.005〜1.500重量% 以Al 2 O 3 3计,含量为0.005〜0.100重量%,以SiO 2 2计。 通过同时包含这三个要素并将其内容设定在上述范围内,机电耦合系数kt可以为30%以上,作为施加前后的谐振频率Fr的变化率的DeltaFr 外部热冲击的绝对值可以为0.5%以下。
摘要:
The invention provides a piezoelectric ceramic material comprising a Bi3TiNbO9 crystal and/or an MBi2Nb2O9 crystal which are each a bismuth layer compound, where M represents at least one element selected from Sr, Ba and Ca. The ceramic material contains Bi, Ti, M and Nb as main component elements. The molar ratio as oxides of the main component elements is given by (Bi3−xMx)z (Nb1+yTi1−y)O9 provided that 0