Processing of BaO-Sm2O3-TiO2 system Microwave Dielectric Ceramics

• Main Authors: Lu Chun-An, 盧俊安
• Other Authors: Wang Yuh-Ruey
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/63494295679730270866

碩士 === 國立臺北科技大學 === 材料及資源工程系碩士班 === 89 === The miniaturization of microwave telecommunication productions can be achieved by miniaturizing the microwave devices using IC design and modulation. The small volume and good quality of devices can be effective improved by the more stable and reliable dielectric materials. BaO•Ln2O3•4TiO2 (Ln = La, Pr, Nd, Sm and Gd) system with a high dielectric constant, a low temperature coefficient of resonance frequency, tf, and a high Q factor is well known to be use in microwave telecommunication. This research is to study the effects of the temperature and soaking time on the calcining and sintering in solid-state process. A hybrid method of hydrothermal synthesizing BaO•Sm2O3•4TiO2 dielectric ceramic powders was investigated. The initial results show that the BaSm2Ti4O12 phase can be sintered at temperature lower than 1200℃.