摘要:
To provide a hexagonal type barium titanate powder having a fine and uniform particle size and contributing to a thinner dielectric layer. A hexagonal type barium titanate powder according to the present invention has the following characteristics that a maximum particle diameter is 1.0 μm or less, a ratio of 90% accumulated particle diameter and 50% accumulated particle diameter is 3.0 or less, and a hexagonal ratio is 50% or more.
摘要:
A hexagonal type barium titanate powder comprising barium titanate as a main component shown by a generic formula of (Ba1-αMα)A(Ti1-βGaβ)BO3 and having hexagonal structure wherein; an effective ionic radius of 12-coordinated “M” is −25% or more to +25% or less with respect to an effective ionic radius of 12-coordinated Ba2+, and said A, B, α and β satisfy relations of 0.975
摘要:
Dielectric ceramic composition includes a hexagonal type barium titanate as a main component shown by a generic formula of (Ba1-αMα)A(Ti1-βMnβ)BO3 and having hexagonal structure wherein an effective ionic radius of 12-coordinated “M” is −20% or more to +20% or less with respect to an effective ionic radius of 12-coordinated Ba2+ and the A, B, α and β satisfy relations of 1.000
摘要翻译:介电陶瓷组合物包括六方晶系钛酸钡作为主要成分,由通式(Ba1-αMalpha)A(Ti1-βMnbeta)BO3表示,并具有六方结构,其中12配位“M”的有效离子半径为-20 相对于12配位Ba2 +的有效离子半径为20%以下〜20%以下,A,B,α,β满足1.000 <(A / B)@1.040,0≤α<0.003,0.03 @β@ 0.2,作为子成分,关于主成分,碱土金属氧化物如MgO等的某些含量,Mn 3 O 4和/或Cr 2 O 3,以及CuO和Al 2 O 3以及包含SiO 2的玻璃成分。 根据本发明,可以提供六方晶系的钛酸钡粉末和电介质陶瓷组合物,其用于制造电容器等电介质比较高的等介电常数的电子元件,具有优良的绝缘性能和足够的可靠性。
摘要:
Dielectric ceramic composition includes a hexagonal type barium titanate as a main component shown by a generic formula (Ba1-αMα)A(Ti1-βMnβ)BO3 and having hexagonal structure wherein an effective ionic radius of 12-coordinated “M” is −20% or more to +20% or less with respect to an effective ionic radius of 12-coordinated Ba2+ and the A, B, α and β satisfy relations of 0.900≦(A/B)≦1.040, 0.003≦α≦0.05, 0.03≦β≦0.2, and as subcomponents, with respect to the main component, certain contents of alkaline earth oxide such as MgO and the like, Mn3O4 and/or Cr2O3, CuO, Al2O3, rare earth element oxide and glass component including SiO2. According to the present invention, it can be provided the hexagonal type barium titanate powder and dielectric ceramic composition which are preferable for producing electronic components such as a capacitor and the like showing high specific permittivity, having advantageous insulation property and sufficient reliability.
摘要翻译:介电陶瓷组合物包括六方晶系钛酸钡作为主要成分,由通式(Ba1-αMα)A(Ti1-&bgr; Mn&bgr))BO3表示,并具有六方结构,其中12配位M的有效离子半径为-20 相对于12配位Ba2 +的有效离子半径和A,B,α和bgr的有效离子半径为%以上〜20%以下。 满足0.900&nlE的关系;(A / B)&nlE; 1.040,0.003&nlE;α&nlE; 0.05,0.03&nlE;&bgr&nlE; 0.2,作为副成分,对于主要成分,碱土金属氧化物的某些含量 MgO等,Mn 3 O 4和/或Cr 2 O 3,CuO,Al 2 O 3,稀土元素氧化物和包含SiO 2的玻璃成分。 根据本发明,可以提供六方晶系的钛酸钡粉末和电介质陶瓷组合物,该六方晶系钛酸钡粉末和电介质陶瓷组合物优选用于制造具有高比介电常数的诸如电容器等的电子部件,具有有利的绝缘性和足够的可靠性。
摘要:
A piezoelectric ceramic composition that acquires excellent piezoelectric properties even when it is fired at a low temperature is offered. The piezoelectric ceramic composition possesses a composition corresponding to a solid solution that contains a first compound having a rhombohedral crystal-based perovskite structure, a second compound having a tetragonal crystal-based perovskite structure, and a third compound. The third compound is a compound oxide containing Bi as a first component element, Fe or Mn as a second component element, and a hexavalent metallic element as a third component element. The hexavalent metallic element is at least one kind selected from W and Mo.
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:
Piezoelectric ceramics include a bismuth layer compound containing MII, Bi, Ti, Ln and O, wherein MII represents at least one element selected from the group consisting of Sr, Ba and Ca, and Ln represents at least one element selected from the group consisting of lanthanoids. The piezoelectric ceramics include MIIBi4Ti4O15 typed crystals, and a mole ratio of Ln/(Ln+MII) is 0
摘要:
A piezoelectric ceramic composition including a perovskite-type oxide, wherein the perovskite-type oxide has Na, K, Li, Ba and Sr at the A site and Nb, Ta and Zr at the B site, and has a crystal phase transition in a temperature range of −50 to 150° C., the crystal phase transition being accompanied by an endotherm of no greater than 4 J/g, as well as a piezoelectric element 20 provided with a piezoelectric ceramic 1 that contains the piezoelectric ceramic composition.
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 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