The composition and microstructure of intermetallic compound layer and fracture surface after thermal cycling test were analyzed by scanning electron microscope (SEM) with EDX.

• 通过带有能量散射X射线能谱仪（EDX）的扫描电镜（SEM）对热循环测试后焊点金属间化合物（IMC）层和推拉测试后的断裂面进行了形貌、结构和组分的观察及分析。