摘要
采用传统固相法制备出了Bi_(1/2)Na_(1/2)Ti_(1-x)(Mo_(1/3)W_(1/3))_xO_3(简称BNT-MW-100x)系无铅压电陶瓷材料,研究了Mo和W掺杂对BNT基陶瓷材料显微结构和电学性能的影响。研究结果表明,Mo和W掺杂并未影响BNT陶瓷的晶体结构,仍为纯钙钛矿型结构,而且致密性良好。当x=0.9%时,BNT-MW陶瓷的压电常数最大,d_(33)=108 pC/N,平面机电耦合系数最大,k_p=0.153。
Lead-free piezoelectric ceramics, Bi1/2Na1/2Ti1-x（MO1/3W1/3）xO3 （abbreviated as BNT-MW-100x）, were fabricated by a conventional solid state reaction method. The effects of the doping of Mo and W on the microstructure and electric properties of the ceramics were investigated. The results showed that the BNT-based ceramics with Mo and W doping did not change in the crystal structure but still exhibited a pure perovskite phase with a dense structure. They had the maximum values at x=0.9%, where the Bi1/2Na1/2Ti1-x（MO1/3W1/3）xO3 ceramics exhibited the highest piezoelectric constant of d33=108pC/N, together with the largest planar electromechanical coupling factor of 0.153.
出处
《陶瓷学报》
北大核心
2017年第3期378-381,共4页
Journal of Ceramics
基金
国家自然科学基金(51372110
51402144
51502127)
国家重点研发计划(2016YFB0402701)
山东省自然科学基金(ZR2016EMM02)
山东省自主创新及成果转化专项(2014CGZH0904)
关键词
钛酸铋钠
无铅压电陶瓷
压电性能
介电性能
sodium-bismuth, titanate, lead-free piezoceramics, piezoelectric properties, dielectric properties
