摘要
研究了掺杂Co2O3对ZnTiO3陶瓷的微观结构与介电性能的影响。结果表明,掺杂的Co2O3在高温下分解生成Co2+进入ZnTiO3晶格形成(CoxZn1-x)TiO3固溶体,有效阻止了其分解为立方尖晶石相和金红石相。当Co2O3掺杂量为x=0.1,烧结温度1050℃时,陶瓷具有优良的微波介电性能和体积密度:ε=29.8,Q=4660(f=10GHz),τf=-60×10-6/℃,ρ=5.11g/mm3,并形成稳定、完全致密化的介电陶瓷组织结构。
Effect of Co2O3–doping on microstructure and dielectric properties of ZnTiO3 were studied.The results show that Co2＋ is produced from high temperature decomposing of Co2O3.Zn2＋ is replaced partially by Co2＋ in ZnTiO3 to form（CoxZn1-x）TiO3 which prevented ZnTiO3 dissolved into spinel and rutile.When the Co2O3 doped amount is 0.1 and sintering temperature is 1050℃,ZnTiO3 ceramic system shows stable dense structure and excellent microwave dielectric properties and volume density as follows： ε=29.8,Q=4660（f=10GHz）,τf=-60×10-6/℃,ρ=5.11g/mm3.
出处
《功能材料与器件学报》
CAS
CSCD
北大核心
2012年第2期91-96,共6页
Journal of Functional Materials and Devices
基金
陕西省教育厅专项科研计划项目(11JK0844)
