Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1548280 | Progress in Natural Science: Materials International | 2014 | 6 Pages |
Abstract
CuO-doped CaSiO3-1 wt% Al2O3 ceramics were synthesized via a traditional solid-state reaction method, and their sintering behavior, microstructure and microwave dielectric properties were investigated. The results showed that appropriate CuO addition could accelerate the sintering process and assist the densification of CaSiO3-1 wt% Al2O3 ceramics, which could effectively lower the densification temperature from 1250 °C to 1050 °C. However, the addition of CuO undermined the microwave dielectric properties. The optimal amount of CuO addition was found to be 0.8 wt%, and the derived CaSiO3-Al2O3 ceramic sintered at 1100 °C presented good microwave dielectric properties of εr=7.27, QÃf=16,850 GHz and Ïf=â39.53 ppm/°C, which is much better than those of pure CaSiO3 ceramic sintered at 1340 oC (QÃf=13,109 GHz). The chemical compatibility of the above ceramic with 30 Pd/70 Ag during the cofiring process has also been investigated, and the result showed that there was no chemical reaction between palladium-silver alloys and ceramics.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Denghao Li, Huanping Wang, Zuopeng He, Zhen Xiao, Ruoshan Lei, Shiqing Xu,