摘要:
In a dielectric ceramic having crystal grains and containing a perovskite in which the A site contains Ba and the B site contains Ti. as a main component, the crystal orientations are aligned in substantially the same direction within the crystal grains. Some of Ba may be replaced with Ca and/or Sr, and some of Ti may be replaced with Zr and/pr Hf. This achieves a dielectric ceramic which has a high dielectric constant and has favorable AC electric field characteristics in which the change in dielectric constant is small even with changes in applied electric field.
摘要:
In a dielectric ceramic having crystal grains and containing a perovskite in which the A site contains Ba and the B site contains Ti. as a main component, the crystal orientations are aligned in substantially the same direction within the crystal grains. Some of Ba may be replaced with Ca and/or Sr, and some of Ti may be replaced with Zr and/pr Hf. This achieves a dielectric ceramic which has a high dielectric constant and has favorable AC electric field characteristics in which the change in dielectric constant is small even with changes in applied electric field.
摘要:
The dielectric ceramic has a composition represented by general formula 100(Ba1-x-ySrxCay)m(Ti1-zZrz)O3+aBaO+bR2O3+cMgO+dMnO+eCuO+fV2O5+gXuOv (where R is a rare-earth element such as La, Ce or Pr; and XuOv is an oxide group including at least Si); and 0≦x≦0.05, 0≦y≦0.08 (preferably 0.02≦y≦0.08), 0≦z≦0.05, 0.990≦m, 100.2≦(100 m+a)≦102, 0.05≦b≦0.5, 0.05≦c≦2, 0.05≦d≦1.3, 0.1≦e≦1.0, 0.02≦f≦0.15, and 0.2≦g≦2. With this composition, a monolithic ceramic capacitor retaining good dielectric characteristics and temperature characteristics even if a high field strength voltage is applied by further thinning the dielectric layers thereof and having excellent reliability achieving good isolating property, dielectric strength, and high-temperature load life is obtained.
摘要翻译:电介质陶瓷具有由通式100(Ba 1-xy),(C 1 -C 10)m)表示的组成, (Ti 1-z z z z)O 3 + a B a O + b R 2 O 3 3 / 其中R是(C 1 -C 6)烷基,其中R 1是C 1 -C 6烷基, 诸如La,Ce或Pr的稀土元素; X 1 O 2 O 3是至少包括Si)的氧化物基团; 并且0 <= x <= 0.05,0 <= y <= 0.08(优选0.02 <= y <= 0.08),0 <= z <= 0.05,0.990 <= m,100.2 <=(100m + a) = 102,0.05 <= b <= 0.5,0.05 <= c <= 2,0.05 <= d <= 1.3,0.1 <= e <= 1.0,0.02 <= f <= 0.15和0.2 <= g < 2。 通过这种组成,即使通过进一步减薄其介电层并且具有优异的可靠性获得良好的隔离性,介电强度和高温负载寿命,即使施加高的场强电压,也能保持良好的介电特性和温度特性的单片陶瓷电容器。 获得。
摘要:
A dielectric ceramic formed by firing in a reducing atmosphere is provided. A multilayer ceramic capacitor formed by using the aforementioned dielectric ceramic has superior reliability even when the thicknesses of dielectric ceramic layers formed therefrom are reduced. The dielectric ceramic has crystal grains; and crystal boundaries and triple points, which are located between the crystal grains. The crystal grains contain perovskite compound grains composed of a perovskite compound represented by ABO3 (where A is Ba and Ca, or Ba, Ca and Sr; B is Ti, or Ti and a part thereof which is replaced with at least one of Zr and Hf) and crystal oxide grains composed of a crystal oxide containing at least Ba, Ti and Si, and about 80% or more of the number of the triple points each have a cross-sectional area of about 8 nm2 or less.
摘要:
A dielectric ceramic includes a compound represented by the general formula: (Ba1-tCat)m(Ti1-u-xZruCux)O3 (where 0.96≦m≦1.02, 0.001≦x≦0.03, 0≦t≦0.1, and 0≦u≦0.06) as a primary component, a rare earth element Re such as Dy, a metal element M such as Mn, Mg, and Si. In the dielectric ceramic, the Cu is uniformly and dispersedly present in the primary phase grain forming the primary component, and the contents of the accessory components with respect to 100 molar parts of the primary component are 0.1 to 1.5 molar parts of Re, 0.1 to 0.6 molar parts of M, 0.1 to 1.5 molar parts of Mg and 0.1 to 2.0 molar parts of Si. Accordingly, a multilayer ceramic capacitor can be realized which has a high dielectric constant, superior temperature properties, and a high reliability, and also has a small change in electrostatic capacitance with time.
摘要翻译:电介质陶瓷包括由以下通式表示的化合物:(Ba 1-t C 1)m(Ti 1-ux) (其中0.96 <= m <=1.02,0.001,0≤x≤0.03)其中, 0 <= t <= 0.1,0 <= u <= 0.06)作为主要成分,稀土元素Re如Dy,金属元素M如Mn,Mg和Si。 在电介质陶瓷中,Cu均匀分散存在于形成主要成分的初晶相中,辅助成分相对于100摩尔份的主成分为0.1〜1.5摩尔份,Re为0.1〜 0.6摩尔份M,0.1〜1.5摩尔份的Mg和0.1〜2.0摩尔的Si。 因此,可以实现具有高介电常数,优异的温度特性和高可靠性的多层陶瓷电容器,并且随着时间的推移也具有小的静电电容变化。
摘要:
A dielectric ceramic includes a compound represented by the general formula: (Ba1-tCat)m(Ti1-u-xZruCux)O3 (where 0.96≦m≦1.02, 0.001≦x≦0.03, 0≦t≦0.1, and 0≦u≦0.06) as a primary component, a rare earth element Re such as Dy, a metal element M such as Mn, Mg, and Si. In the dielectric ceramic, the Cu is uniformly and dispersedly present in the primary phase grain forming the primary component, and the contents of the accessory components with respect to 100 molar parts of the primary component are 0.1 to 1.5 molar parts of Re, 0.1 to 0.6 molar parts of M, 0.1 to 1.5 molar parts of Mg and 0.1 to 2.0 molar parts of Si. Accordingly, a multilayer ceramic capacitor can be realized which has a high dielectric constant, superior temperature properties, and a high reliability, and also has a small change in electrostatic capacitance with time.
摘要翻译:电介质陶瓷包括由以下通式表示的化合物:(Ba 1-t C 1)m(Ti 1-ux) (其中0.96 <= m <=1.02,0.001,0≤x≤0.03)其中, 0 <= t <= 0.1,0 <= u <= 0.06)作为主要成分,稀土元素Re如Dy,金属元素M如Mn,Mg和Si。 在电介质陶瓷中,Cu均匀分散存在于形成主要成分的初晶相中,辅助成分相对于100摩尔份的主成分为0.1〜1.5摩尔份,Re为0.1〜 0.6摩尔份M,0.1〜1.5摩尔份的Mg和0.1〜2.0摩尔的Si。 因此,可以实现具有高介电常数,优异的温度特性和高可靠性的多层陶瓷电容器,并且随着时间的推移也具有小的静电电容变化。
摘要:
The dielectric ceramic has a composition represented by general formula 100(Ba1-x-ySrxCay)m(Ti1-zZrz)O3+aBaO+bR2O3+cMgO+dMnO+eCuO+fV2O5+gXuOv (where R is a rare-earth element such as La, Ce or Pr; and XuOv is an oxide group including at least Si); and 0≦x≦0.05, 0≦y≦0.08 (preferably 0.02≦y≦0.08), 0≦z≦0.05, 0.990≦m, 100.2≦(100 m+a)≦102, 0.05≦b≦0.5, 0.05≦c≦2, 0.05≦d≦1.3, 0.1≦e≦1.0, 0.02≦f≦0.15, and 0.2≦g≦2. With this composition, a monolithic ceramic capacitor retaining good dielectric characteristics and temperature characteristics even if a high field strength voltage is applied by further thinning the dielectric layers thereof and having excellent reliability achieving good isolating property, dielectric strength, and high-temperature load life is obtained.
摘要:
A dielectric ceramic includes, in composition, a perovskite-type compound having the general formula ABO3 containing Ba, Ca and Ti, and an additive component containing Si, R(La or the like), and M (Mn or the like), the additive component not being solid-dissolved and, moreover, the major component existing in at least 90% of the cross-section of each of the crystal grains of which the number is equal to at least 85% of that of all of the crystal grains contained in the dielectric ceramic, at least the Ba, the Ca, the Ti, the Si, the R, and the M being contained at at least 85% of the analytical points in the crystal grain boundaries of the dielectric ceramic.