Investigating the Microstructure and Electric Properties of (Na0.5K0.5)NbO3-Bi0.5(Na0.90K0.10)TiO3 Ceramic System by Various Doping

• Main Authors: Zhang,Zhi-Jie, 張智傑
• Other Authors: Wang,Chun-Huy
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/43285187721689497964

碩士 === 南榮技術學院 === 工程科技研究所碩士班 === 100 === Piezoelectric ceramics can be applied to many areas, such as sensors, drivers, non-volatile memory, resonance, filters, converters, etc.. Lead zirconate titanate Pb (Zr, Ti) O3(PZT) is the most important piezoelectric ceramic materials, but the material composition of leaded components, the manufacturing process will pollute the environment. To solve this problem, lead-free piezoelectric ceramics will be the focus of future research. (Na1-xKx)NbO3 lead-free piezoelectric materials were the current potential of the material over the system; with x = 50 atom% [(Na05K0.5)NbO3] component has electrical performance of the most excellent, To improve the electrical properties,(Na0.5K0.5) NbO3-based system was added a perovskite ferroelectric material Bi0.5(Na0.93K0.07)0.5TiO3 and doped Li2CO3, Nb2O5, Bi2O3, Mn2O3 and other elements. In this study, the properties of(1-x)(Na0.5K0.5)NbO3-xBi0.5(Na0.90K0.10)0.5TiO3 system (x = 0.03) were 1180 (1kHz) of the εr , 30% of the kp and 177(pC/N) of the d33, The kp and kt of this 0.97(Na0.5K0.5)NbO3-0.03Bi0.5(Na0.90K0.10)0.5TiO3 system doped Nb2O5 were 1288 (1kHz) of the εr , 41% of the kp and 276 (pC/N) of the d33.