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.
参考文献
[1] | Electronic Industries Association, EIA RS-198C (1983). |
[2] | Steve Butcher, Mike Chu, Alan Rae. TAM Ceramics Inc., Ceramic Industry, 1997, 12: 29-30. |
[3] | Swartz S L, Shrout T R. Mater. Res. Bull., 1982, 17: 1245-1250. |
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