In this study, brazing experiments were carried out on 6063 aluminum alloy using Al-20Cu-5Si-2Ni filler alloy. Microstructure, mechanical property, and removing behavior of oxide film of the brazed joints were analyzed. The results revealed that the 3% (CsF-AlF₃) + 97% (KF-AlF₃) non-corrosive flux showed high activity, especially effective removal of oxide films during the brazing process. For the brazing condition of 580 °C/10 min, the brazing seam contained less CuAl₂ intermetallic compared with that of 570 °C/20 min and presented a higher shear strength of 126.1 MPa at room temperature. After heat treatment the joint strength was increased to 156.5 MPa. Furthermore, the heat-treated joints subjected to a salt spray test still retained a shear strength of 150.2 MPa.

在这项研究中，使用Al-20Cu-5Si-2Ni填充合金对6063铝合金进行了钎焊实验。分析了钎焊接头的组织，力学性能和氧化膜去除行为。结果表明，3％（CsF-AlF ₃）+ 97％（KF-AlF ₃）的非腐蚀性助焊剂显示出高活性，特别是在钎焊过程中有效地去除了氧化膜。对于580°C / 10 min的钎焊条件，钎焊层中所含的CuAl ₂较少与570°C / 20分钟的金属间化合物相比，在室温下呈现出更高的剪切强度，为126.1 MPa。热处理后，接头强度增加到156.5 MPa。此外，经过盐雾测试的热处理接头仍保持150.2 MPa的剪切强度。