基于相变换能机理的反铁电陶瓷水声换能器初探

阐述了改性锆锡钛酸铅Pb(Zr,Sn,Ti)O3(PZST)反铁电陶瓷作为一种基于相变换能机理的大应变电致伸缩材料的性能特征以及作为水声换能器新型有源材料的优势。采用掺镧改性锆锡钛酸铅PbLa(Zr,Sn,Ti)O3(PLZST)反铁电陶瓷材料首次设计制作了纵振式反铁电陶瓷水声换能器。试验结果表明,PLZST反铁电陶瓷用于水声换能器研制在技术上是可行的,与压电陶瓷换能器比较,目前反铁电换能器样品的等效发射电压灵敏度提高3~5dB以上。根据实验情况,认为在发射电压灵敏度和声源级方面具有进一步提升的潜力。

Preliminary study on antiferroelectric ceramics underwater acoustic transducer based on transduction mechanism of phase transition

This paper discusses several properties based on the transduction mechanism of phase transformation of the lead zirconate titanate stannate antiferroelectric ceramic(Pb(Zr,Sn,Ti)O3,i.e.,PZST),for its advantages as an active transducer material.A longitudinal antiferroelectric ceramics underwater acoustic transducer is then for the first time designed and developed,which utilizes modified PbLa(Zr,Sn,Ti)O3(i.e.,PLZST) antiferroelectric ceramics as active element.Experimental results indicate that the ceramic ...