The Study and Improvement of PbMnNb-PZ-PT High Mechanical Quality Factor Piezoelectric Materials

• Main Authors: Chang, Wen-Bing, 張文斌
• Other Authors: Hur-Lon Lin
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/40382093089803184377

碩士 === 大同工學院 === 材料工程學系 === 85 === Twenty one compositions of Pb(Mn1/3Nb2/3)O3-PbZrO3-PbTiO3 piezoelectric ceramics system were prepared by conventional Solid State reactions ceramic processing. The physical and piezoelectric properties were examined. The mechanical quality factor Qm is an indication for resisting energy loss. To improve Qm of PbMnNb-PZ-PT system, composition Pb(Mn1/3 Nb2/3)0.06 Zr0.48Ti0.46O3 were selected and MnO, Sb2O5 and UO3 were doped with different amount. After sintering at 1250 C for 3 hours, Kp and Qm are 0.5462~0.554 1786~1816 respectively. Due to microstructure improvement, MnO, Sb2O5 and UO3 are addition to Pb(Mn1/3Nb2/3)0.06PZ0.48PT0.46, Kp and Qm are not good respectively. Composition Pb(Mn1/3Nb2/3)0.07Zr0.468 Ti0.462O3 were selected and NiO, Sc2O3, Pb(Ta1/2Sc1/2)O3 were doped with different amounts. After sintering at 1250 C for 3 hours, composition Pb(Mn1/3Nb2/3)0.07 PZ0.468PT0.462 has Kp=0.5224, Qm=1680 respectively. Due to microstructure improvement, 0.3 wt% Pb(Ta1/2Sc1/2)O3 addition to Pb(Mn1/3 Nb2/3)0.07PZ0.468PT0.462 has excellent Kp and Qm combination piezoelectric properties of 0.623 and 2241 respectively.