摘要
为实现Al2O3陶瓷与可伐合金的可靠连接,分析影响接头力学性能的因素,测试了Al2O3陶瓷/AgCuTi/可伐合金钎焊接头的抗剪强度,通过光学显微镜、SEM及EDS对断口形貌、成分进行分析,确定了断裂路径.研究表明,钎焊温度为900℃,保温时间为5 min时,接头抗剪强度最高,达144 MPa.此时,断裂大部分发生在Al2O3陶瓷/钎料界面处,小部分发生在界面中的TiFe2、TiNi3金属间化合物层.钎焊温度升高,保温时间延长时,界面上出现大量的TiFe2、TiNi3金属间化合物,界面性能弱化,断裂发生在TiFe2、TiNi3金属间化合物层,造成Al2O3陶瓷/AgCuTi/可伐合金接头连接强度降低.
In order to obtain reliable joint of alumina ceramic and Kovar alloy, the shear strength of alumina ceramic/AgCuTi/Kovar alloy brazed joint was tested to evaluate the mechanical property of the joint. Effect of processing parameters including brazing temperature and holding time on the joint mechanical property was also discussed by optical microscope, SEM and EDS. Results showed the maximum shear strength was 144 MPa, which was achieved when the brazing temperature was 900℃ and holding time was 5min. In this case, fracture happened mainly at the alumina ceramic/brazing alloy interface and partly at TiFe2, TiNi3 intermetallic compounds layer. The TiFe2, TiNi3 intermetallic compounds increased as the brazing temperature and holding time increasing resulted in the decrease of alumina ceramic/AgCuTi/Kovar alloy joint property.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2007年第3期366-369,共4页
Materials Science and Technology
