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复合X7R多层陶瓷电容器

蔡弘; 桂治轮; 李龙土   

  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
  • 收稿日期:1999-12-09 修回日期:2000-01-19 出版日期:2000-12-20 网络出版日期:2000-12-20

Composite Multilayer Ceramic Capacitors with X7R Characteristics

CAI Hong; GUI Zhi-Lun; LI Long-Tu   

  1. State Key Lab. of New Ceramics and Fine Processing; Department of Materials Science & Engineering; Tsinghua University; Beijing 100084; China
  • Received:1999-12-09 Revised:2000-01-19 Published:2000-12-20 Online:2000-12-20

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.

关键词: 复合多层陶瓷电容器, CMLCCs, PMN-PNN-PT, PMN-PT, 共烧

Abstract: 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.

Key words: composite multilayer ceramic capacitors, CMLCCs, PMN-PNN-PT, PMN-PT, cofired

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