Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1462207 | Ceramics International | 2013 | 4 Pages |
Abstract
In this paper, the microstructure and microwave dielectric properties of translucent polycrystalline alumina (PCA) with various addition amounts of MgO were investigated. Translucent PCA was obtained by adding ∼500–2000 ppm MgO. Compared with the undoped PCA, the translucent PCA doped with 500 ppm MgO showed a higher density and a much higher Q×f value. As the MgO content further increased, the dielectric constants (εr) of the translucent PCA samples showed no significant change, while the Q×f values decreased rapidly. The increased amount of impurities (MgO or spinel) was believed to be the main reason for the lower Q×f values.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Huijun Wang, Wei Li, Carl Ternström, Huixing Lin, Jianlin Shi,