Microstructure and Strength of Al2O3/Al2O3 Joints Bonded with ZnO—Al2O3—B2O3—SiO2 Glass—Ceramic
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2014年第9期
论文作者：Weiwei Zhu Jichun Chen Chuanyong Hao Jinsong Zhang
文章页码：944 - 948
摘 要：ZnOeAl2O3eB2O3eSiO2（ZABS）glass powder was used as interlayer to join alumina ceramics.The effect of joining temperature on the microstructure and strength of joints was investigated.The results showed that the ZABS glass can react with alumina substrate to form a layer of ZnAl2O4at Al2O3/glass interface.Bending test exhibited that low joining temperature（1150 C）led to low joint strength due to the formation of pores in the interlayer,originated by high viscosity of the glass.High joining temperature（1250 C）also resulted in low joint strength,because of large CTE（coefficient of thermal expansion）mismatch between amorphous interlayer and alumina substrate.Therefore,only when the joining temperature was appropriate（1200 C）,defect-free interface and high joint strength can be obtained.The optimum joint strength reached 285 MPa,which was the same as the base material strength.
Weiwei Zhu，Jichun Chen，Chuanyong Hao，Jinsong Zhang
Institute of Metal Research, Chinese Academy of Sciences
摘 要：ZnOeAl2O3eB2O3eSiO2（ZABS）glass powder was used as interlayer to join alumina ceramics.The effect of joining temperature on the microstructure and strength of joints was investigated.The results showed that the ZABS glass can react with alumina substrate to form a layer of ZnAl2O4at Al2O3/glass interface.Bending test exhibited that low joining temperature（1150 C）led to low joint strength due to the formation of pores in the interlayer,originated by high viscosity of the glass.High joining temperature（1250 C）also resulted in low joint strength,because of large CTE（coefficient of thermal expansion）mismatch between amorphous interlayer and alumina substrate.Therefore,only when the joining temperature was appropriate（1200 C）,defect-free interface and high joint strength can be obtained.The optimum joint strength reached 285 MPa,which was the same as the base material strength.
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