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http://dx.doi.org/10.4191/KCERS.2002.39.9.822

Study on Condition of Fabrication Processing for R. F. High-power Unit Capacitor and Electrical Characteristics According to Addition of ZrO2  

Ahn, Young-Soo (Functional Materials Research Center, Korea Institute of Energy Research)
Kim, Joon-Soo (Functional Materials Research Center, Korea Institute of Energy Research)
Park, Joo-Seok (Functional Materials Research Center, Korea Institute of Energy Research)
Kim, Hong-Soo (Functional Materials Research Center, Korea Institute of Energy Research)
Han, Moon-Hee (Functional Materials Research Center, Korea Institute of Energy Research)
No, Kwang-Soo (Department of Material Science and Engineering, Korea Advanced Institute of Science and Technology)
Publication Information
Abstract
Fabrication and electrical characterization of R. F. High-power unit capacitors were investigated to study on condition of fabrication processing for R. F. High-power unit capacitor and electrical characteristics according to addition of $ZrO_2$. The unit capacitors were fabricated using tape casting. The optimum mixture ratio of dielectrics and mixing binder for the slurry fabrication was 57.5∼60.0: 42.5∼40.0 wt%. The slurry viscosity was 4000∼5000 cps and casting state of green tape fabricated using these slurry was excellent. Optimum stacking was made by 200 kg/$cm^2$ pressure with 80$^{\circ}C$ heating. $ZrO_2$ was added to improve the electrical characteristics of unit capacitor, especially breakdown characteristics. The dielectric constant and loss factor of the unit condenser having different $ZrO_2$ amounts was not changed in the addition range of 1 to 5 wt%. Also, dielectric constant was not changed in the frequency range of 10 to 500 kHz. It was found that characteristics of resistance voltage was improved through the formation of $CaZrO_3$ and the reduction of particle size as about 3wt% $ZrO_2$ was added.
Keywords
High-power ceramic capacitor; Tape casting; $CaTiO_3$; $ZrO_2$;
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