采用固相反应法制备了富钛BaTi4+xO9+2x(x=0.0-0.50)微波介质陶瓷,探讨了TiO2含量以及烧结温度对物相组成和介电性能的影响.在1300～1350 ℃烧结BaTi4+xO9+2x陶瓷即可达到约98%的相对密度.当x≤0.28时,BaTi4+xO9+2x陶瓷为BaTi4O9单相.随TiO2含量的增加,BaTi4+xO9+2x陶瓷从BaTi4O9单相逐渐转变成以BaTi4O9为主相,同时出现TiO2和Ba2Ti9O20相,并且随烧结温度提高,TiO2含量较多的试样中出现更多的Ba2Ti9O20相.随TiO2含量的增加介电常数逐渐增大,而Qf值呈下降趋势.Qf值从x=0.0时的约40 000 GHz逐渐降低至x=0.50时的15 000 GHz.
参考文献
| [1] | 宋英 et al.[J].Bull Chin Ceram Soc,1998,17(03):50. |
| [2] | Wu Shunhua et al.[J].Journal of the European Ceramic Society,2003,23:2565. |
| [3] | Yi-Cheng Liou;Chi-Ting Wu;Ko-Hao Tseng;Tzu-Chin Chung .Synthesis of BaTi_4O_9 ceramics by reaction-sintering process[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2005(9):1483-1489. |
| [4] | Choy JH.;Hwang SH.;Byeon SH.;Demazeau G.;Han YS. .Citrate route to Sn-doped BaTi4O9 with microwave dielectric properties[J].Journal of the American Ceramic Society,1998(12):3197-3204. |
| [5] | Negas T et al.[J].American Ceramic Society of Bulletin,1993,72(01):80. |
| [6] | Wang S F et al.[J].Ceramics International,2003,29(01):77. |
| [7] | Fang T T;Jyh-Tzong;etal .[J].Journal of the European Ceramic Society,2002,22:79. |
| [8] | Fan X C .[J].IEEE Transactions on Microwave theory and Techniques,2005,53:3130. |
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%