Prototype Capacitor Produced by Freeze Tape-Casting

被引：0

作者：

Gorzkowski, E. P. ^{[1
]}

Pan, M. -J. ^{[1
]}

Bender, B. A. ^{[1
]}

机构：

[1] USN, Res Lab, Washington, DC 20375 USA

来源：

2011 INTERNATIONAL SYMPOSIUM ON APPLICATIONS OF FERROELECTRICS (ISAF/PFM) AND 2011 INTERNATIONAL SYMPOSIUM ON PIEZORESPONSE FORCE MICROSCOPY AND NANOSCALE PHENOMENA IN POLAR MATERIALS | 2011年

关键词：

Freeze casting; capacitor; composites; SUBLIMABLE VEHICLES; CERAMICS; COMPOSITES;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In previous research freeze casting was used to construct ceramic-polymer composites in which the two phases are arranged in an electrically parallel configuration. By doing so, the composites exhibit dielectric constant (K) up to two orders of magnitude higher than that of composites with ceramic particles randomly dispersed in a polymer matrix. This technique has been successful with both an aqueous and camphene based ceramic slurry that is frozen uni-directionally to form a template such that ceramic aggregates are aligned in the temperature gradient direction. This technique has also been modified to process the slurry at room temperature using a tape caster. This alleviates the need for liquid nitrogen and a freeze-dryer. Transitioning the directional freezing technique to use a tape caster was successful and 20 vol.% BaTiO3 X7R ceramic plates were produced from camphene based tapes fired at 1300 degrees C for 2hrs. A 10 layer prototype capacitor was produced with a capacitance of 1.4 nF (K similar to 490) and low loss. This work shows that it is viable to scale the freezing technology up for future high K composite capacitor production.

引用

页数：3

共 7 条

[1]

Araki K, 2004, J AM CERAM SOC, V87, P2014, DOI 10.1111/j.1151-2916.2004.tb06353.x

[2]

Araki K, 2004, J AM CERAM SOC, V87, P1859

[3] Porous ceramic bodies with interconnected pore channels by a novel freeze casting technique [J].