中温烧结BaO－PbO－Bi_2O_3－Nd_2O_3－TiO_2系统陶瓷的组

RESEARCH ON RELATIONSHIP BETWEEN COMPOSITIONS AND DIELECTRIC PROPERTIES OF CERAMICS IN BaO-PbO-Bi_2O_3-TiO_2 SYSTEM SINTERED AT INTERMEDIATE TEMPERATURE

研究了ＢａＯ－ＰｂＯ－Ｂｉ＿２Ｏ＿３－Ｎｄ＿２Ｏ＿３－ＴｉＯ＿２五元系统各成分对系统介电性能的影响。调整各组分及玻璃的含量，获得中温（１１４０℃）烧结的热稳定独石电容器瓷料（ＮＰＯＭＬＣ），其介电系数ε＝９０±５，损耗ｔｇδ≤３×１０￣（－４），绝缘电阻率ρ＿ｖ≥１０￣（１２）Ω·ｃｍ，介电系数的温度系数α＿ε＝０±１５×１０￣（－６）／℃。

The influence of each component in the composition of BaO-PbO-Bi_2O_3-Nd_2O_3-TiO_2 sys-tem on the dielectric properties is studied. By adjusting each component and glass content in the system,NPO MLC ceramic material sintered at intermediate temperature ( 1140℃)are obtained with the following proper-ties : dielectric constant ε=90±5, dielectric loss tgδ≤3× 10￣(-4), insulation resistivity ρ_v≥10￣(12)Ω·cm,dielectric constant temperature coefficient α_ε=0±15× 10￣(-6)/℃.