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BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2009, Vol. 28 ›› Issue (6): 1163-1166.

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Effects of BaCu(B_2O_5) Additive on Low Temperature Sintering and Dielectric Properties of CaO-BaO-Li_2O-Sm_2O_3-TiO_2 Microwave Dielectric Ceramics

SUN Lu;HUANG Jin-liang;GU Yong-jun;LI Qian   

  • Online:2009-12-15 Published:2021-01-15

Abstract: Effects of BaCu(B_2O_5) on the dielectric properties of 14CaO-4BaO-8Li_2O-12Sm_2O_3-63TiO_2 microwave dielectric ceramics were investigated. The crystalline structure and micromorphology were studied by XRD and SEM, respectively. The sintering temperature of the specimens could be reduced from 1325 ℃ to 1100 ℃ and perovskite phase and BST phase were formed after sintering at 1100 ℃ for 2 h. The specimens with 6wt% BaCu(B_2O_5) sintered at 1100 ℃ for 2 h showed Kr of 87.76,tanδ of 0.018,TCF of -4.27 ppm/℃ (1 MHz).

Key words: microwave dielectric ceramic%perovskite%oxide%liquid phase sintering%dielectric properties

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