【摘要】 对锌铝合金的钎焊性进行了分析,对ZnCl2 NH4Cl KF钎剂的去膜机理以及Cd Sn Zn钎料各组分的作用进行了阐述;分析了锌铝合金钎焊接头的力学性能、组织和成分;并对钎焊接头进行了无损检测。试验结果表明:用自制的Cd Sn Zn钎料和ZnCl2 NH4Cl KF钎剂,经320℃加热和15min保温,对锌铝合金进行炉中钎焊,其钎焊接头抗拉强度为116.3MPa,抗剪强度为96MPa;接头中生成了新相,存在着(220)Mg2Cu6Al5//(010)Cd的相结构。更多还原

【Abstract】 The soldering properties of Zn-Al alloy were analyzed. The mechanism of the removing of oxide films from substrates by ZnCl₂-NH₄Cl-KF flux and functions of solder’s elements were discussed. The mechanical properties, structure and compounds of soldered joints were also analyzed. Non-destructive testing methods were used for detecting soldered joints. Results show that by using Cd-Sn-Zn solder and ZnCl₂-NH₄Cl-KF flux to solder Zn-Al alloy at the temperature of 320℃ heating for 15 minutes, some new compounds and （220） Mg₂Cu₆Al₅/ /（010）Cd diffraction relationship appeared in soldered joints. The tensile strength and shearing strength of soldered joints are 116.3MPa and 96MPa respectively.更多还原