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    • 38. 发明公开
    • Dielectric ceramic composition, electronic device, and multilayer ceramic capacitor
    • Ker ator ator ung ung ung ung ator ator ator ator ator ator ator ator ator ator ator ator ator ator
    • EP1786005A1
    • 2007-05-16
    • EP06023375.6
    • 2006-11-09
    • TDK Corporation
    • Ito, KazushigeSato, AkiraYoshii, AkitoshiOkabe, MasayukiTakeda, AtsushiShinkawa, Takai
    • H01G4/12
    • H01G4/1209H01G4/1227H01G4/30Y10T428/252Y10T428/256Y10T428/258Y10T428/2991
    • A dielectric ceramic composition including dielectric particles comprising a main ingredient phase having barium titanate as its main ingredient and a diffusion phase present at the periphery of said main ingredient phase, wherein when an average value of the depth where sub ingredient elements present at said diffusion phase diffuses from a surface of said diffusion phase toward a center of said dielectric particle is designated as an average diffusion depth, a dispersion of the average diffusion depth among the dielectric particles is, in terms of CV value, 5 to 30%. According to the present invention, an electronic device excellent in all of the dielectric constant, high temperature accelerated life, TC bias, and IR temperature dependency can be provided. The CV value corresponding to an average diffusion depths in 30 particles. The element which diffuse into the dielectric particle being Yb, Mg and Ca.
    • 1.一种电介质陶瓷组合物,其特征在于,包括以主要成分相为主成分相的电介质粒子,所述主成分相以钛酸钡为主要成分,所述主成分相的周围存在扩散相,其中,在所述扩散相中存在次成分元素的深度的平均值 从所述扩散相的表面朝向所述介电粒子的中心扩散为平均扩散深度,以CV值计,介电粒子的平均扩散深度的分散度为5〜30%。 根据本发明,可以提供所有介电常数,高温加速寿命,TC偏压和IR温度依赖性优异的电子器件。 对应于30个颗粒的平均扩散深度的CV值。 扩散到电介质颗粒中的元素是Yb,Mg和Ca。
    • 40. 发明公开
    • Ceramic electronic device and production method thereof
    • Elektronische keramische Vorrichtung und Verfahren zur Herstellung
    • EP1648002A1
    • 2006-04-19
    • EP05022292.6
    • 2005-10-12
    • TDK Corporation
    • Ito, KazushigeSato, Akira
    • H01G4/10
    • H01G4/1218
    • A highly reliable ceramic electronic device having an excellent temperature characteristic of a capacitance and a low IR temperature dependency, comprising a dielectric layer: wherein the dielectric layer includes a main component expressed by a composition formula of Ba m TiO 2+m , wherein "m" satisfies 0.995 ≤ m ≤ 1.010 and a ratio of Ba and Ti satisfies 0.995 ≤ Ba/Ti ≤ 1.010, and, as subcomponents, an oxide of Al and an oxide of Si or an oxide of R, R is at least one kind selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; and includes a secondary phase composed of at least a part of the oxide of Al and at least a part of the oxide of Si or the oxide of R and being different from a main phase mainly composed of the main component; and the production method are provided.
      The first pre preliminarly fired powder contains as main component material (BaTiO 3 ) and subcomponent MgO, V 2 O 5 , MnCO 3 and CaZrO 3 .
    • 一种具有优异的电容温度特性和低IR温度依赖性的高可靠性陶瓷电子器件,包括电介质层:其中介电层包括由组成式Ba m TiO 2 + m表示的主要成分,其中“m “满足0.995‰‰‰1.010,Ba和Ti的比例满足0.995‰¤Ba / Ti‰¤1.010,作为次要成分,Al的氧化物和Si的氧化物或R,R的氧化物处于 选自Sc,Y,La,Ce,Pr,Nd,Pm,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb和Lu中的至少一种; 并且包括由Al的氧化物和Si的氧化物的至少一部分或R的氧化物的至少一部分构成的二次相,并且与主要由主要成分构成的主相不同; 并提供制造方法。 第一次预先焙烧的粉末包含主要成分(BaTiO 3)和次要组分MgO,V 2 O 5,MnCO 3和CaZrO 3。