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    • 5. 发明申请
    • DIELECTRIC CERAMICS AND MULTILAYER CERAMIC CAPACITOR
    • 电介质陶瓷和多层陶瓷电容器
    • US20080226927A1
    • 2008-09-18
    • US12033806
    • 2008-02-19
    • Kazumi KanedaShusaku UedaShinichiro Ikemi
    • Kazumi KanedaShusaku UedaShinichiro Ikemi
    • B32B18/00C03C3/00
    • B32B18/00C04B2237/346C04B2237/68C04B2237/704
    • Dielectric ceramics and a multi-layer ceramic capacitor with internal Ni electrodes having a more improved property showing the reliability such as high accelerated life time than usual, a temperature characteristic of the permittivity satisfying the X6S property, and having a permittivity of from 800 to 1800, wherein the dielectric ceramics comprise a main ingredient within a range:1.100≦Ba/Ti≦1.700 0.02≦a≦0.10 0.01≦b≦0.05 when represented as: ABO3+aRe+bM (in which ABO3 is a general formula for a perovskite structure, wherein the A cation sites are predominantly occupied by Ba and optionally one or more of Ca and Sr, and wherein the B cation sites are predominantly occupied by Ti and Zr, wherein Re represents at least one oxide of metals selected from La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y, wherein M is an oxide of metal element selected from Mg, Al, Cr, Mn, Fe, Ni, Cu, and Zn, wherein a and b each represents the number of mols for each oxide based on 1 mol of ABO3 when each oxide is converted into that of a chemical formula containing one metal element), and wherein the Zr is within a range, when represented as a ratio of Zr to Ti, of; Ti:Zr=95:5 to 60:40.
    • 电介质陶瓷和具有内部Ni电极的多层陶瓷电容器具有更好的性能,显示出比通常高的加速寿命的可靠性,满足X6S性能的介电常数的温度特性,并且介电常数为800至1800 其中介电陶瓷包括主要成分在1.100 <= Ba / Ti <= 1.700 0.02 <= a <= 0.10 0.01 <= b <= 0.05时表示为:<?in-line-formula description =“ 在线公式“end =”lead“?> ABO 3 + aRe + bM <?in-line-formula description =”In-line Formulas“end =”tail“?>(其中 ABO 3是钙钛矿结构的通式,其中A阳离子位置主要由Ba和任选的一个或多个Ca和Sr占据,并且其中B阳离子位点主要被Ti占据, Zr,其中Re表示选自La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu和Y中的至少一种金属氧化物,其中M是氧化物 的选自Mg,Al,Cr,Mn,Fe,Ni,Cu和Zn的金属元素,其中a和b各自表示基于1摩尔ABO 3的每种氧化物的摩尔数,当时 每个氧化物被转化成含有一种金属元素的化学式的氧化物),并且其中当以Zr与Ti的比率表示时,Zr在一定范围内; Ti:Zr = 95:5〜60:40。