Dielectric material and process for producing the same
    21.
    发明授权
    Dielectric material and process for producing the same 有权
    介电材料及其制造方法

    公开(公告)号:US06380117B2

    公开(公告)日:2002-04-30

    申请号:US09333944

    申请日:1999-06-16

    IPC分类号: C04B35468

    摘要: Disclosed is a dielectric material comprising: 100 parts by weight of a main component having a composition represented by formula: xBaO—yRE2O3—zTiO2, wherein RE represents at least one rare earth element and x+y+z=100 mol %; 5 parts by weight or less of at least one alkali metal oxide; and 5 parts by weight or less of Bi2O3.

    摘要翻译: 公开了一种电介质材料,其包含:100重量份具有由式:xBaO-yRE 2 O 3 -zTiO 2表示的组成的主要组分,其中RE表示至少一种稀土元素,x + y + z = 100摩尔% 5重量份以下的至少一种碱金属氧化物; 和5重量份以下的Bi 2 O 3。

    Dielectric material and process for producing the same
    23.
    发明授权
    Dielectric material and process for producing the same 失效
    介电材料及其制造方法

    公开(公告)号:US6165927A

    公开(公告)日:2000-12-26

    申请号:US65607

    申请日:1998-04-24

    摘要: A dielectric material based on BaO-RE.sub.2 O.sub.3 -TiO.sub.2 is disclosed, which has a relatively high relative permittivity .epsilon..sub.r, a small absolute value of the temperature coefficient of resonance frequency .tau..sub.f and a high coefficient of unloaded quality Q.sub.u. Processes for producing the dielectric material are also disclosed. The dielectric material comprises 100 parts by weight of main ingredients having a composition represented by xBaO-yRE.sub.2 O.sub.3 -zTiO.sub.2 (wherein RE represents a rare earth element and x+y+z=100) and up to 5 parts by weight of at least one alkali metal oxide. This alkali metal oxide serves to improve .epsilon..sub.r and Q.sub.u without a considerable sacrifice of .tau..sub.f. The RE preferably consists of samarium or a combination of samarium with neodymium and/or lanthanum. In producing the dielectric material, a dense sintered body can be obtained without fail by using a raw material containing hydroxyl groups as a starting material for the rare-earth ingredient among the main ingredients.

    摘要翻译: 公开了一种基于BaO-RE2O3-TiO2的介电材料,它具有相对较高的相对介电常数εr,谐振频率τf的温度系数的绝对值小,以及无负载质量Qu的高系数。 还公开了用于制造电介质材料的方法。 电介质材料包含100重量份具有由xBaO-yRE 2 O 3 -ZTiO 2(其中RE表示稀土元素并且x + y + z = 100)表示的组成的主要成分和至多5重量份的至少一种碱 金属氧化物。 这种碱金属氧化物用于改善ε兰曲,而没有相当大的牺牲τf。 RE优选由钐或钐与钕和/或镧的组合组成。 在电介质材料的制造中,通过使用含有羟基的原料作为主要成分中的稀土成分的原料,可以不失败地获得致密的烧结体。