Effects of CaSiO3 addition on sintering behavior and microwave dielectric properties of Al2O3 ceramics |
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| Authors: | Jin-min ChenHuan-ping Wang Si-qiao FengHong-ping Ma De-gang DengShi-qing Xu |
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| Affiliation: | a College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China
b School of Mechanical & Automotive Engineering, Zhejiang University of Science and Technology, Hangzhou 310012, China |
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| Abstract: | The effects of CaSiO3 addition on the sintering behavior and microwave dielectric properties of Al2O3 ceramics have been investigated. The addition of CaSiO3 into Al2O3 ceramics resulted in the emergence of Ca2Al2SiO7 and CaAl2Si2O8, which acting as liquid sintering aids can effectively lower the sintering temperature of Al2O3 ceramic. The Q × f value of Al2O3-CaSiO3 ceramics decreased with the CaSiO3 addition increasing because of the lower Q × f value of Ca2Al2SiO7 and CaAl2Si2O8. Compared with the pure CaSiO3 ceramic, the Al2O3-CaSiO3 ceramic with 20 wt% CaSiO3 addition possessed good dielectric properties of ?r = 9.36 and Q × f = 13,678 GHz at the similar sintering temperature. |
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| Keywords: | Microwave dielectric properties Al2O3 ceramic CaSiO3 addition |
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