| 摘要 |
<p>PURPOSE:To enable a piezoelectric composite to be enhanced in piezoelectric constant dh under water. CONSTITUTION:The mixed powder composed of two types of piezoelectric ceramic powder different in piezoelectric constant and grain diameter is dispersed into specific polymer and mixed well. At this point, the ratio of one ceramic powder to the other ceramic is set to be 3:2 to 9:1. The ceramic mixed powder is so set as to amount to 65-75vol% of polymer. Furthermore, the piezoelectric ceramic mixed powder is composed of lead titanate zirconate powder and lead titanate powder.</p> |
