通过在CuZnNi合金钎料中添加不同含量的锰元素，研究了锰元素对CuZnNi合金钎料的液相线温度、润湿性能和钎料与接头力学性能的影响。结果表明：随着钎料中锰含量的增加，钎料的液相线温度逐渐降低，当锰的质量分数为4.5%时，钎料的液相线温度下降了54 ℃；钎料的铺展面积随钎料中锰含量的增加而逐渐增大，当锰的质量分数为4.5%时，钎料的铺展面积达到了298 mm²；随着钎料中锰含量的增加，钎料的抗拉强度逐渐增大，而伸长率呈先上升后略下降的趋势；钎焊接头的抗剪强度随钎料中锰含量的增加而显著提高，当锰的质量分数为4.5%时，抗剪强度达到了221 MPa，比基体钎料的提高了16.1%。

Different contents of Mn element were added to CuZnNi alloy brazing filler. The effect of Mn element on liquidus temperature, wettability, and mechanical properties of brazing filler and joint was studied. The results show that liquidus temperature of brazing filler decreased gradually with increase of Mn content and liquidus temperature of brazing filler dropped 54℃ when mass fraction of Mn was 4.5%. Spreading area of brazing filler increased gradually with increase of Mn content and reached 298 mm² when mass fraction of Mn was 4.5%. The tensile strength of CuZnNi increased and elongation increased first and then decreased with increase of Mn content. The shear strength of brazed joints increased gradually with the increase of Mn content and the shear strength was 221.2 MPa while mass fraction of Mn was 4.5% which was increased by 16.1% compared with that of base brazing filler.