Studies on the thermodynamic and the miscibility gap of the Cu2O-Al2O3-SiO2 pseudo-ternary system

摘要：

Cu2O-Al2O3-SiO2 ternary system of given compositions can be used as a kind of thermal shock resistance sealing materials for electronic devices. So far, little systematic work was reported on the phase behavior and phase equilibrium at a high temperature, except the isothermal section of a CuO-Al2O3–SiO2 ternary system at 950 and 1150℃. We have investigated the thermodynamic behavior and the microstructure of the compositions in the miscibility gap of the Cu2O-Al2O3-SiO2 pseudo-ternary system on the basis of the reported isothermal section of this system at 1150℃ based on the analyzing of the differential scanning calorimeter and the observing of the scanning electronic microscope. The eutectic point of the Cu2O-Al2O3-SiO2 pseudo-ternary system was determined by the thermal analysis. Then, the changing rule of the microstructures with different compositions was investigated. The results indicated that large differences existed among the different compositions in the miscibility gap of Cu2O-Al2O3-SiO2 ternary system.

关键词： Thermal analysis liquid miscibility morphology

作者: Qiuguo Xiao Gangcheng Ding Peng Long Mingmin Zhang Shaohua Shen

作者单位: School of Chemistry and Chemical Engineering,Hunan University of Science and Technology, Xiangtan, C School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan,

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 440-444

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）