摘要
为实现Al2O3陶瓷与低碳钢的可靠连接,分析影响接头力学性能的因素,测试了Al2O3陶瓷/AgCuTi/低碳钢钎焊接头的抗剪强度,通过SEM及EDS对断口形貌、成分进行分析,确定了断裂路径.结果表明,随着钎焊温度的升高或者保温时间的延长,接头的抗剪强度都呈先增大后减小的趋势.当钎焊温度为900℃,保温时间为5 min时,接头抗剪强度达103 MPa.此时,断裂大部分发生在Al2O3陶瓷母材,小部分发生在Al2O3陶瓷/钎料界面处,且均为脆性断裂.
The shear strength of alumina ceramic/AgCuTi/ mild steel 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 with scanning electron microscopy and energy dispersive spectroscopy.Results showed the maximum shear strength was 103 MPa,which was achieved when the brazing temperature was 900 ℃ and holding time was 5 min.In this case,fracture happened mainly at the alumina ceramic/brazing alloy interface and partly at Al2O3,TiMn and TiFe2 intermetallic compounds.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2009年第10期65-67,72,共4页
Transactions of The China Welding Institution
基金
国家科技支撑计划项目(2006BAE03803)
哈尔滨工业大学优秀团队支撑计划资助项目
关键词
氧化铝陶瓷
活性钎焊
抗剪强度
alumina ceramic
active metal brazing
shear strength
