无铅0.96KNNTS_(x)-0.04BNKZ透明压电陶瓷的制备及其光电性能研究

Preparation and Opto-Electric Properties of Lead-Free 0.96KNNTS_(x)-0.04BNKZ Transparent Piezoelectric Ceramics

本文制备了0.96(K_(0.48)Na_(0.52))(Nb_(0.95-x)Ta_(0.05)Sb_(x))O_(3)-0.04Bi_(0.5)(Na_(0.82)K_(0.18))_(0.5)ZrO_(3)(即0.96KNNTS_(x)-0.04BNKZ,x=0.03,0.04,0.06,0.07)无铅透明压电陶瓷,并探讨了不同Sb掺杂量对陶瓷压电性能和光学透明度的影响。结果表明,所有陶瓷样品均为钙钛矿结构,且Sb掺杂显著改善了陶瓷的压电性能和透明度。尤其在x=0.04时,样品的压电系数达到240 pC/N,光学透过率在波长780 nm处达到31.5%。该研究表明,通过成分设计调控,KNN基无铅陶瓷能够同时实现较好的透明度和高的压电性能,在光声成像和透明换能器等领域具有重要应用潜力。

In this study,0.96(K_(0.48)Na_(0.52))(Nb_(0.95-x)Ta_(0.05)Sb_(x))O_(3)-0.04Bi_(0.5)(Na_(0.82)K_(0.18))_(0.5)ZrO_(3)(0.96KNNTS_(x)-0.04BNKZ,x=0.03,0.04,0.06,0.07)lead-free transparent piezoelectric ceramics were prepared,and the effects of Sb doping levels on their piezoelectric properties and optical transparency were examined.All samples exhibit a perovskite structure.With increasing Sb content,both piezoelectric performance and transparency improve.Notably,at x=0.04,the piezoelectric coefficient reaches 240 pC/N,with an optical transmittance of 31.5%at 780 nm.This study demonstrates that compositional design can achieve enhanced transparency and high piezoelectric performance in KNN-based lead-free ceramics,offering significant potential for applications in optoacoustic imaging and transparent transducers.