전자 부품, 유전체 자기 조성물 및 그 제조 방법
    49.
    发明公开
    전자 부품, 유전체 자기 조성물 및 그 제조 방법 无效
    电子元件,电介质陶瓷组合物及其制造方法

    公开(公告)号:KR1020070118556A

    公开(公告)日:2007-12-17

    申请号:KR1020070057296

    申请日:2007-06-12

    IPC分类号: H01B3/10

    摘要: A method for preparing a dielectric ceramic composition is provided to form a thin film-like dielectric layer comprising various main ingredients and having a high relative permittivity and a desired temperature coefficient of capacitance, thereby imparting improved reliability to an electronic part such as a multi-layer ceramic condenser. A method for preparing a dielectric ceramic composition comprising a main ingredient containing a compound having a perovskite type crystal structure and represented by the formula of ABO3(wherein A is Ba alone or in combination with Ca, and B is Ti alone or in combination with Zr) and a fourth side ingredient containing an oxide of R(wherein R is at least one selected from Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu), comprises the steps of: dividing the starting materials of the main ingredient into a first part and a second part; preliminarily reacting the first part of the starting materials for the main ingredient with a part of the starting materials for the fourth side ingredient to be included in the dielectric ceramic composition to obtain reacted materials; and adding the second part of the starting materials for the main ingredient and the remaining part of the starting materials for the fourth side ingredient to be included in the dielectric ceramic composition to the reacted materials. When the mole number of the first part is n1 and the mole number of the second part is n2, the ratio of the first part to the combined mole number of the first part and the second part, i.e. n1/(n1+n2), ranges from 0.5 to 1.

    摘要翻译: 提供一种制备电介质陶瓷组合物的方法,以形成包含各种主要成分并且具有高的相对介电常数和所需的电容温度系数的薄膜状电介质层,从而赋予电子部件(例如, 层陶瓷冷凝器。 一种电介质陶瓷组合物的制备方法,其包含含有具有钙钛矿型结晶结构并由式ABO 3表示的化合物的主成分(其中A为单独的Ba或与Ca组合,B为单独的Ti或与Zr的组合 )和含有R(其中R为选自Y,La,Ce,Pr,Nd,Pm,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb中的至少一种的氧化物的第四副成分) Lu)包括以下步骤:将主要成分的起始材料分成第一部分和第二部分; 使主成分的起始原料的第一部分与要包含在电介质陶瓷组合物中的第四副成分的起始原料的一部分反应以获得反应的材料; 并将第二部分的原料和用于待包括在电介质陶瓷组合物中的第四副成分的起始材料的剩余部分添加到反应材料中。 当第一部分的摩尔数为n1且第二部分的摩尔数为n2时,第一部分与第一部分和第二部分的组合摩尔数的比率即n1 /(n1 + n2), 范围从0.5到1。