Joining of activated graphite to 6063 aluminum alloy with Al-Cu-Si-Ni-Mg filler metal

• 来源期刊: 中国焊接
• 年，卷（期）: 2020,（4）
• 页码范围: 60-64
• 页数: 5页
• 语种: 英文
• DOI: 10.12073/j.cw.20200419001

摘要

In this work,6063 aluminum alloy-graphite joint intended for thermal conductive application were realized by applying Al-Cu-Si-Ni-Mg brazing filler metal and Ag-Cu-Ti pasted on high density graphite substrate to ensure wetting during the brazing process.The in-terface reactions during brazing and mechanical properties were studied using scanning electron microscopy(SEM)and shear test device.TiC was formed at the graphite/active Ag-Cu-Ti paste interface due to the reaction between Ti and C,and thus the wettability on the graph-ite was improved.It is shown that joint with a good quality can be produced at a brazing temperature of 550℃for 10 min.The average tensile strength of the joint is 21 MPa.thus the wettability on the graphite was improved.It is shown that joint with a good quality can be pro-duced at a brazing temperature of 550℃for 10 min.