| 摘要 |
PURPOSE:To dispense with the addition of polarizing electrodes to a piezoelectric ceramic layer by a method wherein polarization is accomplished by applying an electric potential across conductive elastomer layers sandwiching a piezoelectric ceramic layer. CONSTITUTION:A piezoelectric ceramic layer 1 is sandwiched between conductive elastomer layers 2, and the resultant laminate is further sandwiched between brass plates 3. Then the entirety is tightly packed under two brass leaf springs 4. The assembly is as is placed in silicone oil, an electric potential is applied across the brass leaf springs 4, which polarizes the piezoelectric ceramic layer 1. With the conductive elastomer layers 2 serving as electrodes and the piezoelectric ceramic layer 1 being thus polarized, there is no need for the addition of polarizing electrodes to the piezoelectric ceramic layer 1, which reduces the cost. |
