Interfacial Reaction for Brazing Al2O3 Ceramics in Atmospheric Environment with CuO Auxiliary Ag72Cu28 Eutectic Solder

HUANG Jian; LU Jian-shu

doi:10.11973/jxgccl201602011

Materials and Mechanical Engineering > 2016 > 40(2): 43-46. > DOI: 10.11973/jxgccl201602011

HUANG Jian, LU Jian-shu. Interfacial Reaction for Brazing Al₂O₃ Ceramics in Atmospheric Environment with CuO Auxiliary Ag_{72_{Cu₂₈ Eutectic Solder[J]. Materials and Mechanical Engineering, 2016, 40(2): 43-46. DOI: 10.11973/jxgccl201602011}}

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Interfacial Reaction for Brazing Al₂O₃ Ceramics in Atmospheric Environment with CuO Auxiliary Ag_{72_{Cu₂₈ Eutectic Solder}}

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Received Date: November 05, 2015

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Abstract

A method with CuO auxiliary Ag72Cu28 eutectic solder was used to realize brazing Al2O3 ceramics in atmospheric environment. The shear strength and morphology of brazed joint, interfacial reaction products and mechanism were studied. The results show that when brazing temperature was 1 050 ℃, holding time was 10 min and mass fraction of CuO was 10wt%, shear strength of the joint was the highest, the srength was 39.04 MPa. During brazing, liquated Cu moved to the surface of Al2O3 ceramics with the help of CuO, and then the solder was easier wetting and spreading on Al2O3 surface. Interface transition layer could be observed clearly in brazed joint, and interfacial reaction products were mainly CuAl2O4 and CuAlO2 phases.
- Al2O3 ceramic,
- brazing,
- wetting,
- interfacial reaction

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Interfacial Reaction for Brazing Al2O3 Ceramics in Atmospheric Environment with CuO Auxiliary Ag72Cu28 Eutectic Solder

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Interfacial Reaction for Brazing Al₂O₃ Ceramics in Atmospheric Environment with CuO Auxiliary Ag_{72_{Cu₂₈ Eutectic Solder}}