Bulletin of the Chinese Ceramic Society, Volume. 41, Issue 11, 3969(2022)
Effect of CaO Content on CBAS Glass/Al2O3 Low Temperature CoFired Ceramic
In this paper, the structure and performance effects of CaO content on CaOB2O3Al2O3SiO2 (CBAS) glass/Al2O3 low temperature cofired ceramic were mainly studied. The structure of glass and low temperature cofired ceramic was characterized and analyzed by DSC, FTIR, XRD, SEM and other test methods. The research results show that when the CaO content is lower than 40% (mass fraction, the same bellow), the increase of free oxygen introduced by CaO destroys the glass network structure and reduces the glass viscosity. When the CaO content is greater than 40%, Ca2+ forms larger anion units with [SiO4] tetrahedra, which improves glass viscosity and glass transition temperature. The precipitation of CaSiO3 and Ca2SiO4 and the transition from CaSiO3 to Ca2SiO4 are facilitated by CaO. As the CaO content increases, the denseness of the ceramics increases first and then decreases, and the crystalline phase size gradually increases, which leads to an increase in the density, flexural strength and dielectric constant of the ceramic and then a decrease. When the CaO content is 40%, the sample achieves the best performance with the maximum density of 2.94 g/cm3, the flexural strength of 153.44 MPa, and the dielectric constant of 9.69.
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LI Zijie, HE Feng, FAN Yunfei, XIE Junlin, MEI Shuxia, YANG Hu, LIU Xiaoqing. Effect of CaO Content on CBAS Glass/Al2O3 Low Temperature CoFired Ceramic[J]. Bulletin of the Chinese Ceramic Society, 2022, 41(11): 3969
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Received: May. 6, 2022
Accepted: --
Published Online: Dec. 26, 2022
The Author Email: Zijie LI (1402700497@qq.com)
CSTR:32186.14.