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研究了多层叠片式压电陶瓷驱动器元件。电极结构与过去传统设计不同,每个内电极的面积与元件的截面积相同。它没有无压电活性的部分,因此它呈现出的应变/电场特性类似于普通的压电陶瓷。它能以相当低的电压(200V)驱动并且在连续的电压脉冲作用下是半永久性的。这种用0.65Pb(Mg_(1/3)Nb_(2/3))O_3-0.35PbTiO_3陶瓷制成的元件,其典型的性能是:在1×10~6V/m电场驱动下,应变为8.7×10~(-4);应力大于3.5×10~7N/m~2;响应时间小于100μs。
Multilayered piezoelectric ceramic actuator elements are studied. The electrode structure is different from the traditional design in the past, and the area of each internal electrode is the same as the cross-sectional area of the element. It has no piezoelectrically active portion, so it exhibits a strain / electric field characteristic similar to that of ordinary piezoelectric ceramics. It can be driven at a fairly low voltage (200V) and semi-permanently under the effect of a continuous voltage pulse. The typical performance of the device made of 0.65Pb (Mg_ (1/3) Nb_ (2/3)) O_3-0.35PbTiO_3 ceramics is that under the electric field of 1 × 10 ~ 6V / m, the strain is 8.7 × 10 ~ (-4); stress greater than 3.5 × 10 ~ 7N / m ~ 2; response time less than 100μs.