采用溶胶-凝胶颗粒包覆技术在Ph（Zn1／3Nb3／3）O3基因溶体颗粒表面形成一层低熔硼硅包覆物，以包覆后的两种固溶体为高低温组元制备复相陶瓷．结果表明；颗粒包覆物可显著降低复相陶瓷的烧结温度，并有效抑制两相固溶反应，获得了低烧结温度、高介电常数、具有X7R温度特性的Ph（Zn1／3Nb2／3）O3基复相陶瓷
A novel sol-gel particle-coating technique was developed to form a thin glassy layer on the surface of PZN particles. Two types of
powders with different Curie temperatures were used as high-temperature constituent and low-temperature one to prepare PZN-based composite ceramics.
A PZN-based diphasic ceramic with X7R character and high dielectric constant was successfully obtained at low sintering temperature.
The results show that the particle-coating method is effective to lower sintering temperature of the composite ceramics and suppress the reaction
between the two starting constituents.
参考文献
| [1] | Yamashita Y. Am. Ceram. Soc. Bull., 1994, 73 (8): 74 2 Takahara H, Kiuchi K. Adv. Ceram. Mater., 1986, 1 (4): 346--349 3 Furakawa O, Harata M, Imai M, et. al., J. Mater. Sci., 1991, 26: 5838--5842 4 岳振星, 王晓莉, 张良莹, 姚熹. 功能材料， 1997, 28 (2): 157--161 5 岳振星, 王晓莉, 张良莹, 姚熹(YUE Zhen-Xing, et al). 无机材料学报(Journal of Inorganic Materials), 1998, 13 (2): 189--194 6 Kingery W D, Bowen H K, Uhlman D R. Introduction to ceramics, second edition, Wiley, New York, 1976 |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%