Effect of CuO addition on the sintering temperature and microwave dielectric properties of CaSiO3– Al2O3 ceramics |
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作者姓名: | Denghao Li Huanping Wang Zuopeng He Zhen Xiao Ruoshan Lei Shiqing Xu |
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作者单位: | College of Materials Science and Engineering, China Jiliang University;Semiconductor Manufacturing International (Shanghai) Corporation |
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基金项目: | financially supported by the Science and Technology Innovative Research Team of Zhejiang Province(2010R50016);the Natural Science Foundation of Zhejiang Province(Z14B010005) |
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摘 要: | 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 from1250 1C to 1050 1C. 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–Al2O3ceramic sintered at 1100 1C presented good microwave dielectric properties of εr?7.27,Q f?16,850 GHz and τf? 39.53 ppm/1C, which is much better than those of pure CaSiO3 ceramic sintered at 1340oC(Q f?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.& 2014 Chinese Materials Research Society. Production and hosting by Elsevier B.V. All rights reserved.
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关 键 词: | Microwave dielectric properties CaSiO3ceramic Al2O3ceramic CuO addition |
收稿时间: | 11 August 2013 |
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