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URN etd-0722104-185123 Statistics This thesis had been viewed 2358 times. Download 876 times. Author Tzung-Shin Yeh Author's Email Address No Public. Department Materials Engineering Year 2003 Semester 2 Degree Master Type of Document Master's Thesis Language English Page Count 104 Title Investigation of 0.05Pb(Mn1/3Sb2/3)O3-0.48PbZrO3-0.47PbTiO3 Piezoelectric Ceramic Materials Keyword Piezoelectric material Mechanical quality factor Electromechanical copling factor Electromechanical copling factor Mechanical quality factor Piezoelectric material Abstract In this study, 0.05Pb(Mn1/3Sb2/3)O3-0.48PbZrO3-0.47PbTiO3 (so-called PbMnSb-PZ-PT) and various weight percent of Pb(Ta1/2Sc1/2)O3 in 0.05Pb(Mn1/3Sb2/3)O3-0.48PbZrO3-0.47PbTiO3 two systems were prepared by several combination of calcined temperature and sintering temperature to observe the difference of physical properties.
In the multilayer ceramic, the internal electrodes are sintered together. So the reduction of sintering temperature not only can decrease the pollutions and save energy, but also can diminish the cost of the electrodes substantially. Although with lower sintering temperature, the piezoelectric properties of ceramics are decayed usually. By means of suitable calcination at higher temperature and then sintering at low temperature would be solution of obtaining good piezoelectric properties and low cost of fabrication.
In PbMnSb-PZ-PT, the Qm value are all above 1676 at calcined temperature 1200℃ and sintering temperatures 1100℃、1150℃ and 1200℃, the best Qm value is 1707 at sintering temperature 1100℃. The best kp values are 0.605、0.601 and ε33 values are 856、853 at sintering temperature 1150℃ and 1200℃, respectively. The Qm、kp and ε33 are decrease because the over high sintering temperature, this might be high sintering temperature cause serious PbO vaporization.
Adding various weight percent of Pb(Ta1/2Sc1/2)O3 in 0.05Pb(Mn1/3Sb2/3)O3-0.48PbZrO3-0.47PbTiO3 system. The Qm value can maintain at 1526 at sintering temperature 1050℃ when the amount of adding Pb(Ta1/2Sc1/2)O3 is 0.5 wt%. The kp values can reach on 0.584、0.602 and ε33 values are 837、843 at sintering temperature 1050℃ and 1100℃, respectively. The Qm、kp and ε33 are decrease with the increase of amounts of adding Pb(Ta1/2Sc1/2)O3. Although the best Qm value after adding Pb(Ta1/2Sc1/2)O3 is smaller than the best Qm value without adding Pb(Ta1/2Sc1/2)O3, the sintering temperature can decrease 50℃ to 100℃. Even more, the kp values and ε33 values can increase.
Advisor Committee Hur-Lon Lin - advisor
Hsieh Chih-Wen - co-chair
Wan-Yi Wei - co-chair
Files Date of Defense 2004-06-24 Date of Submission 2004-07-22