CAJ | 학술논문

阐述了改性锆锡钛酸铅Pb(Zr,Sn,Ti)O_3(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)O_3(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3～5 dB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.
천술료개성고석태산연Pb(Zr,Sn,Ti)O_3(PZST)반철전도자작위일충기우상변환능궤리적대응변전치신축재료적성능특정이급작위수성환능기신형유원재료적우세.채용참란개성고석태산연PbLa(Zr,Sn,Ti)O_3(PLZST)반철전도자재료수차설계제작료종진식반철전도자수성환능기.시험결과표명,PLZST반철전도자용우수성환능기연제재기술상시가행적,여압전도자환능기비교,목전반철전환능기양품적등효발사전압령민도제고3～5 dB이상.근거실험정황,인위재발사전압령민도화성원급방면구유진일보제승적잠력.
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)O_3,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)O_3(i.e., PLZST) antiferroelectric ceramics as active element. Experimental results indicate that the ceramic is technically feasible for underwater acoustic transducer applications. Compared with the piezoelectric ceramic transducer, antiferroelectric ceramic transducer shows better acoustic performance, presently up to 3-5dB enhancement in the equivalent transmitting voltage response. It can be expected that PLZST antiferroelectric ceramic may further improve the transducer performance in the transmitting voltage response and the acoustic source level, when some technical bottlenecks are overcome.