摘要
采用传统的陶瓷工艺制备了0.94[0.9405(K0.5Na0.5)NbO3-0.0095(Bi0.5Na0.5)TiO3-0.05LiSbO3]-0.06NaTaO3(简称KNN-BNT-LS-NT)+xmol%CuO(0≤x≤2.0)陶瓷,研究了其晶体结构、压电、介电以及铁电性质,并对Cu2+在A、B位取代做了详细的分析讨论。结果表明,Cu2+的加入能显著提高陶瓷的机械品质因数Qm和降低其介电损耗tanδ,当加入1.5mol%的Cu2+在时,取得较佳的性能,即d33=183pC/N、Qm=166、tanδ=0.0135。
The 0.94[0.9405（K0.5Na0.5）NbO3-0.0095（Bi0.5Na0.5）TiO3-0.05LiSbO3]-0.06NaTaO3（abbreviated as KNN-BNT-LS-NT）＋xmol%CuO（0≤x≤2.0） lead free piezoelectric ceramics were prepared by conventional solid state reaction technique. The effects of Cu^2＋ on the crystal structure, piezoelectric, dielectric and ferroelectric properties of the ceramics were investigated, A detailed analysis that Cu^2＋ had substituted for A and B site cations had been given. The result indicated that Cu^2＋ doping more improved the mechanical quality factor （Qm） and decreased the dielectric loss （tan δ ）. A specimen doped with 1.5mol% Cu^2＋ exhibited the best electrical properties, that d33=183pC/N, Qm=166, tanδ =0.0135.
出处
《中国陶瓷》
CAS
CSCD
北大核心
2011年第6期31-34,42,共5页
China Ceramics
