摘要:
A multilayer ceramic chip capacitor includes alternately stacked dielectric layers and internal electrode layers. The dielectric layers contain barium titanate as a major component and magnesium oxide, manganese oxide, barium oxide and/or calcium oxide, silicon oxide and optionally, yttrium oxide as minor components in such a proportion that there are present 0.1-3 mol of MgO, 0.05-1.0 mol of MnO, 2-12 mol of BaO+CaO, 2-12 mol of SiO.sub.2 and up to 1 mol of Y.sub.2 O.sub.3 per 100 mol of BaTiO.sub.3. The capacitor satisfies the standard temperature dependence of capacitance and shows a minimized change of capacitance with time under an applied DC electric field and a long insulation resistance life. Where the dielectric layers contain 0.1-3 mol of MgO, 1-5 mol of Y.sub.2 O.sub.3, 2-12 mol of BaO+CaO, and 2-12 mol of SiO.sub.2 per 100 mol of BaTiO.sub.3, the capacitor shows improved DC bias performance.
摘要:
A multilayer varistor comprising a varistor chip body having alternately stacked ceramic layers and internal electrode layers is provided. The ceramic layer is composed of a composite oxide containing Ti and/or Zr and Ba as a main component and Si and/or Al as a subordinate component, substantially free of Cr, and has a perovskite phase. The internal electrode layer is composed of a conductor containing a base metal such as Ni or Ni alloy as a main component. The varistor is used in an electric circuit for suppressing noise.
摘要:
The invention provides a multilayer ceramic chip capacitor which satisfies X7R property or a temperature response of its capacitance and shows a minimal change of capacitance with time under a DC electric field, a long accelerated life of insulation resistance (IR) and good DC bias performance and also provides a multilayer ceramic chip capacitor which is resistant to dielectric breakdown in addition to the above advantages. In a first form of the invention, dielectric layers contain BaTiO.sub.3 as a major component and MgO, Y.sub.2 O.sub.3, at least one of BaO and CaO, and SiO.sub.2 as minor components in a specific proportion. In a second form, the dielectric layers further contain MnO and at least one of V.sub.2 O.sub.5 and MoO.sub.3 as minor components in a specific proportion. In the first form, the dielectric layer has a mean grain size of up to 0.45 .mu.m, and in an X-ray diffraction chart of the dielectric layer, a diffraction line of (200) plane and a diffraction line of (002) plane at least partially overlap one another to form a wide diffraction line which has a half-value width of up to 0.35.degree..
摘要:
The invention provides a multilayer ceramic chip capacitor which satisfies X7R property or a temperature response of its capacitance and shows a minimal change of capacitance with time under a DC electric field, a long accelerated life of insulation resistance (IR) and good DC bias performance and also provides a multilayer ceramic chip capacitor which is resistant to dielectric breakdown in addition to the above advantages. In a first form of the invention, dielectric layers contain BaTiO.sub.3 as a major component and MgO, Y.sub.2 O.sub.3, at least one of BaO and CaO, and SiO.sub.2 as minor components in a specific proportion. In a second form, the dielectric layers further contain MnO and at least one of V.sub.2 O.sub.5 and MoO.sub.3 as minor components in a specific proportion. In the first form, the dielectric layer has a mean grain size of up to 0.45 .mu.m, and in an X-ray diffraction chart of the dielectric layer, a diffraction line of (200) plane and a diffraction line of (002) plane at least partially overlap one another to form a wide diffraction line which has a half-value width of up to 0.35.degree..
摘要:
Provided is a dielectric ceramic that includes a main component which contains Mg2SiO4 and additives which contain a zinc oxide and a glass component, in which, in X-ray diffraction. The peak intensity ratio, IB/IA, of the X-ray diffraction peak intensity IB of zinc oxide remaining unreacted, for which 2θ is between 31.0° and 32.0° and between 33.0° and 34.0°, with respect to the peak intensity IA of Mg2SiO4 as the main phase, for which 2θ is between 36.0° and 37.0°, is 10% or less. The dielectric ceramic has a relative density of 96% or greater.
摘要:
A dielectric porcelain composition here contains as main components BaO, Nd2O3, TiO2, MgO and SiO2 at the given ratios and as subordinate components ZnO, B2O3 and CuO at given ratios, so that it can have a low-temperature sintering capability stable and reliable enough to permit a conductor formed of Ag, an alloy containing Ag as a main component or the like to be used as an internal conductor. It is also possible to obtain a dielectric porcelain composition that has limited resonance frequency changes with temperature changes and a specific dielectric constant lower than that of a BaO-rare earth oxide-TiO2 base dielectric porcelain composition, and so is suitable for multilayer type device formation.
摘要翻译:电介质瓷组合物以给定的比例含有BaO,Nd 2 O 3,TiO 2,MgO和SiO 2作为主要组分,并且以给定比例的ZnO,B 2 O 3和CuO作为下属成分,从而可以具有稳定和可靠的低温烧结能力 以允许由Ag形成的导体,以Ag为主要成分的合金等用作内部导体。 也可以获得与BaO-稀土氧化物-TiO 2基电介质瓷组合物相比低的温度变化和比介电常数有限的共振频率变化的电介质瓷组合物,因此适用于多层型器件形成 。
摘要:
A dielectric porcelain composition here contains as main components BaO, Nd2O3, TiO2, MgO and SiO2 at the given ratios and as subordinate components ZnO, B2O3, CuO and an alkaline earth metal oxide RO (R: an alkaline earth metal) at given ratios, preferably with the addition of Ag as an optional subordinate component, so that it can have low-temperature sintering capability stable and reliable enough to permit a conductor formed of Ag, an alloy containing Ag as a main component or the like to be used as an internal conductor.
摘要翻译:电介质瓷组合物以给定的比例含有BaO,Nd 2 O 3,TiO 2,MgO和SiO 2作为主要组分,并以给定的比例作为ZnO,B 2 O 3,CuO和碱土金属氧化物RO(R:碱土金属)的下属成分, 优选通过添加Ag作为任选的从属成分,使得其可以具有稳定和可靠的足够的低温烧结能力,以允许由Ag形成的导体,以Ag为主要成分的合金等用作 内部导体。
摘要:
Objects of the present invention are to provide a low-temperature co-fired ceramic material having a coefficient of linear thermal expansion controlled and has a high dielectric constant, and to reduce the warpage of a fired product even if it has an unsymmetrical lamination structure in a multilayer wiring board in which glass-ceramic mixed layers of different compositions are laminated. A low-temperature co-fired ceramic material in accordance with the present invention includes: SiO2—B2O3—Al2O3-alkaline earth metal oxide based glass, alumina, titania, and cordierite; glass, titania, and cordierite; or glass, titania, and mullite. When a multilayer wiring board is made of the low-temperature co-fired ceramic material, the content of cordierite or mullite of the substrate material is adjusted to control a difference in a coefficient of linear thermal expansion between the layers of the substrate material to not more than 0.25×10−6/° C.
摘要:
A dielectric porcelain composition here contains as main components BaO, Nd2O3, TiO2, MgO and SiO2 at the given ratios and as subordinate components ZnO, B2O3 and CuO at given ratios, so that it can have a low-temperature sintering capability stable and reliable enough to permit a conductor formed of Ag, an alloy containing Ag as a main component or the like to be used as an internal conductor. It is also possible to obtain a dielectric porcelain composition that has limited resonance frequency changes with temperature changes and a specific dielectric constant lower than that of a BaO-rare earth oxide-TiO2 base dielectric porcelain composition, and so is suitable for multilayer type device formation
摘要翻译:电介质瓷组合物中含有BaO,Nd 2 O 3,TiO 2,MgO和SiO 2, >以给定的比例并且以给定的比例作为下属成分ZnO,B 2 O 3 3和CuO,使得其可以具有稳定和可靠的足够的低温烧结能力 以允许由Ag形成的导体,以Ag为主要成分的合金等用作内部导体。 还可以获得具有低于BaO-稀土氧化物-TiO 2基础电介质瓷组合物的温度变化和比介电常数有限的共振频率变化的电介质瓷组合物,以及 因此适用于多层型器件形成
摘要:
A ceramic electronic component includes a first dielectric layer, a second dielectric layer, and a boundary reaction layer. The first dielectric layer is a layer containing BaO, Nd2O3, and TiO2, the second dielectric layer is a layer containing a material different from the material of the first dielectric layer, and the boundary reaction layer is a layer formed between the first dielectric layer and the second dielectric layer and containing at least one of Zn, Ti, Cu, and Mg.
摘要翻译:陶瓷电子部件包括第一电介质层,第二电介质层和边界反应层。 第一电介质层是包含BaO,Nd 2 O 3和TiO 2的层,第二电介质层是包含与第一电介质层的材料不同的材料的层,边界反应层是形成在第一电介质层和 第二电介质层并且包含Zn,Ti,Cu和Mg中的至少一种。