摘要
采用固相法制备了CaZrO3掺杂的BaTiO3-Nb2O5-Co3O4(BNC)系统陶瓷,研究了CaZrO3掺杂量(3.85mol%、4.75mol%、5.50mol%、6.50mol%、7.40mol%)及烧结温度(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CaZrO3掺杂量的增加,BNC陶瓷密度和直径收缩率逐渐增大,介电常数和损耗则逐渐降低;CaZrO3掺杂量一定时,随着烧结温度的升高,BNC陶瓷系统密度和直径收缩率逐渐升高,介电常数增大,介电损耗随温度的升高逐渐降低.
CaZrO3-doped BaTiO3-Nb2O5-Co3O4 （BNC） ceramics were prepared by solid-state reaction technology. The influence of various CaZrO3 additive （3.85 mol%, 4.75 mol%, 5.50 mol%, 6.50 mol%, 7.40 mol%） amount and sintering temperature （1 320 ℃, 1 340 ℃, 1 360 ℃） on density and dielectric properties of BNC ceramics was investigated. The results showed that the density increased with CaZrO3 additive amount, the dielectric constant and tanδ decreased. The sintering temperature was propitious to the the dielectric properties and the density. With the sintering temperature increasing, the dielectric constant and the density of BNC cerramics system increased respectively, and tanδ minished.
出处
《陕西科技大学学报（自然科学版）》
2011年第3期22-25,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
关键词
锆酸钙掺杂
钛酸钡基
介电性能
CaZrO3-doped
dielectric properties
BaTiO3 based ceramics
