摘要
采用固相法制备了La2O3掺杂的BaTi O3-Nb2O5-Co3O4(BNC)系统陶瓷,研究了La2O3掺杂量(0.09 mol/%、0.15 mol/%、0.25 mol/%、0.31 mol/%、0.37 mol%)及烧结温度(1 300℃、1 320℃、1 340℃、1 360℃)对BNC陶瓷致密度及介电性能的影响.结果表明:随着La2O3掺杂量的增加,BNC陶瓷密度逐渐增大,室温介电常数呈现先增大后减小的趋势,介电损耗逐渐减小;La2O3掺杂量一定时,随着烧结温度的升高,BNC陶瓷密度也逐渐增高,介电常数先增大后减小,介电损耗随温度的升高逐渐减小.
La2O3-doped BaTiO3-Nb2O5-Co3O4（BNC） ceramics were prepared by solid-state reaction technology.The influence of various La2O3 additive（0.09 mol/%,0.15 mol/%,0.25 mol/%,0.31 mol/%,0.37 mol%） amount and sintering temperature（1 300 ℃,1 320 ℃,1 340 ℃,1 360 ℃） on density and dielectric properties of BNC ceramics was investigated.The results showed that the density increased with La2O3 additive amount increasing,the dielectric properties increased firstly and then decreased,and tanδ minished.With sintering temperature increasing,the density increased,the dielectric properties increased firstly and then decreased,and tanδ minished.
出处
《陕西科技大学学报（自然科学版）》
2010年第6期23-26,共4页
Journal of Shaanxi University of Science & Technology
基金
教育部科学技术研究重点项目(209126)
陕西省科技攻关项目
陕西科技大学研究生创新基金项目
关键词
三氧化二镧
介电性能
影响
La2O3
dielectric properties
sintering temperature
