Actuation performance and heat generation of shear-bending actuator based on BiScO3-PbTiO3 ceramics from 25 to 300 degrees C

作者：Chen, Jianguo^*; Liu, Guoxi; Cheng, Jinrong; Dong, Shuxiang

来源：Applied Physics Letters, 2015, 107(3): 032906.

DOI：10.1063/1.4927328

• PIEZOELECTRICS

The actuation performance and heat generation of the shear-bending mode actuator based on BiScO3-PbTiO3 (BS-PT) ceramics were investigated at different temperatures and under different magnitudes of applied electric field at different frequencies. The displacement of the actuator increased with the thermal and electric loadings initially, reached the maximum, and then decreased. The maximum displacement was sensitive to the coercive field of the used piezoelectric ceramics, and about 17.5 mu m under an applied electric field of 5 kV/cm at 300 degrees C, three times higher than that measured at room temperature. The heat generation of the actuator at the frequency of 1Hz was almost negligible, whereas it increased seriously with the measuring frequency and the magnitude of the applied electric field. These results indicated that the shear-bending actuator based on BS-PT ceramics could generate large displacement at 300 degrees C without serious heat generation at low frequencies.

• 出版日期2015-7-20
• 单位上海大学; 北京大学