研究了Nb2O5/Co2O3加入量[质量分数,Nb/Co(摩尔比)=0.8]不同对(Ba,Sr)TiO3(Barium strontium titanate,BST)铁电电容器陶瓷介电性能的影响,得到不同Nb2O5/Co2O3加入量与BST陶瓷性能的关系.借助扫描电镜(SEM)和X射线衍射仪(XRD)研究不同Nb2O5/Co2O3加入量对BST陶瓷显微结构和物相的影响,探讨了Nb2O5/Co2O3加入量对BST陶瓷性能影响机理.结果表明:当Nb2O5/Co2O3加入量为1.0%时,可得到满足Y5V特性、介电常数为3934、介质损耗为2.6%综合性能好的BST陶瓷.Nb2O5/Co2O3加入量对BST陶瓷性能的影响是通过细晶化、压抑展宽居里峰、改善介电常数温度特性、减少介电常数、形成杂相、形成"晶核-晶壳"结构等进行.
参考文献
[1] | Effect of the level of addition of Nb_(2)O_(5)/Co_(2)O_(3) and Ba(Nb_(2/3)Co_(1/3))O_(3) on the structure, microstructure, and dielectric properties of BaTiO_(3)[J].Journal of Materials Science. Materials in Electronics,2003(3):129-134. |
[2] | Wang Sea-Fue .Dielectric Properties of Fine-Grained Barium Titanate Based X7R Materials[J].Journal of the American Chemical Society,1999(10):2677-2682. |
[3] | Chazono Hirokazu .Sintering Characteristics in BaTiO_3-Nb_2O_5-Co_3O_4 Ternary System: I, Electrical Properties and Microstructure[J].Journal of the American Chemical Society,1999(10):2689-2697. |
[4] | 李军,黄新友.中温烧结(Ba、Sr)TiO3电容器陶瓷[J].中国陶瓷工业,2004(02):24-28. |
[5] | 黄新友,牛宾,江晓霞,侍克虎.高介、低损耗Ba(Ti,Zr)O3基电容器陶瓷的研究[J].江苏理工大学学报(自然科学版),2001(01):66-70. |
[6] | Hirokazu Chazono .Sintering Characteristics and Formation Mechanism of "Core-Shell" Structure in BaTiO3-Nb2O5-Co3O4 Ternary System[J].Japanese Journal of Applied Physics,1995,9B(34):5354-5359. |
[7] | 陈大任;朱梅根;宋祥云 .添加Nb2O5,CoO的BaTiO3系介质陶瓷εr-t稳定原理[J].电子元件与材料,1991,10(01):38-42. |
[8] | 黄新友,高春华.工业化(Ba,Sr,Ca)(Ti,Zr)O3基电容器陶瓷的研究[J].仪器仪表学报,2003(01):45-48,56. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%