Phase Stability and Dielectric Properties of Low Temperature Fired BaTi4O9 Microwave Material with Copper Electrodes in Reducing Atmosphere
In this study we report sintering behavior and microstructures of glass-added BaTi4O9 microwave dielectric ceramics with copper paste in reducing atmosphere. Experimental results show a buffer layer may form at the interface of Cu-electrode and BaTi4O9 microwave dielectric ceramics if the glass did not diffuse smoothly during sintering, and therefore materials exhibited different colors. X-ray results indicate that Cu reacted with Ba seriously to form complicated reaction products, and some BaTi4O9 transformed to barium titanate with various ration of Ba/Ti, which may degrade the dielectric properties of materials.
Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu
C. S. Chen et al., "Phase Stability and Dielectric Properties of Low Temperature Fired BaTi4O9 Microwave Material with Copper Electrodes in Reducing Atmosphere", Advanced Materials Research, Vols. 284-286, pp. 1466-1470, 2011