摘要
采用传统固相烧结法在960~1 060℃制备了Li_（0.058）（Na_（0.535）K_（0.480））_（0.942）（Nb_0.887）Ta_（0.009）Mg_（0.004））O_3（LNKNTM）无铅压电陶瓷。研究了烧结温度对LNKNTM陶瓷结构和性能的影响。研究结果表明：在试验温度范围内,LNKNTM陶瓷均为钙钛矿结构。随着烧结温度的升高,LNKNTM陶瓷在室温下出现了从四方相到正交相的转变。在1 020℃烧结制备的LNKNTM陶瓷相对密度达到95.1%,并具有优良的电学性能,压电常数d33和机电耦合因数kp分别为231 pC/N和38.6%。
The Li_(0. 058)( Na_(0. 535)K_(0. 480))_(0. 942)(Nb_(0. 887)Ta_(0. 009)Mg_(0. 004))O_3( LNKNTM) lead-free piezoelectric ceramics were prepared by the traditional solid sintering method in the range from 960 ℃ to 1 060 ℃. The effects of sintering temperature on the structure and properties of the LNKNTM ceramics were studied. The results show that in the experimental temperature range,the LNKNTM ceramics are perovskite structure. With the increase of sintering temperature,the ceramics change from tetragonal to orthorhombic phase at room temperature. The ceramics sintering at 1 020 ℃ have the highest relative density of 95. 1% and excellent electrical properties.The piezoelectric coefficient d33 and electromechanical coupling coefficient k_p are 231 pC/N and 38. 6%respectively.
出处
《河南科技大学学报（自然科学版）》
CAS
北大核心
2016年第6期5-8,15,共5页
Journal of Henan University of Science And Technology:Natural Science
基金
国家自然科学基金项目(11104315)
关键词
固相烧结法
无铅压电陶瓷
电学性能
solid sintering method
lead-free piezoelectric ceramics
electrical properties
