复合X7R多层陶瓷电容器  

Composite Multilayer Ceramic Capacitors with X7R Characteristics

作　　者：蔡弘[1] 桂治轮[1] 李龙土[1] 

机构地区：[1]清华大学材料科学与工程系新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《无机材料学报》2000年第6期1117-1122,共6页Journal of Inorganic Materials

基　　金：国家自然科学基金重大项目!(59995523);"863"计划重大课题(863-715-Z33-02-01)

摘　　要：介电常数Ｋ高于 ７２００的、具有满足 Ｘ７Ｒ（－５５～１２５℃，±１５％）规范要求的低烧复合多层陶瓷电容器（ＣＭＬＣＣｓ）已经研制成功．该电容器是由四种具有不同介温特性的ＰＭＮ－ＰＮＮ－ＰＴ和ＰＭＮ－ＰＴ体系的瓷介质膜片按一定布局复合构成．其内部显微结构良好．本研究表明，采用不同材料共烧以得到具有优良性能的片式元件是可行的．The low-sintering composite multilayer ceramic capacitors (CMLCCs) having K-value higher than 7200 with X7R characteristics (-55-+125℃, ±15%) were successfully developed. The CMLCCs incorporate four PMN-PNN-PT or PMN-PT based ceramics with different Curie temperature as the principal components. The green tapes are stacked according to a certain order and cofired. The CMLCCs have good microstructures. The research results show that it is feasible to produce chip components with high performance by cofiring multi-phases materials.

关 键 词：复合多层陶瓷电容器 CMLCCs PMN-PNN-PT PMN-PT 共烧 

分 类 号：TM534.02[电气工程—电器]