采用固相真空扩散连接方法,在873-913 K保温40-240 min条件下对轧制厚度分别为20和60um的Mo和Al箔进行扩散连接.发现Mo-Al固-固界面反应初生相在Mo箔内部形核进而"破壳"生长的形貌演变模式,成分分析表明该初生相为AlsMo3.初生相"破壳"后,Mo-Al界面上由Mo至Al的产物分布依次是Al8Mo3,Al5Mo和Al12Mo;在913 K保温240 min后,Al8Mo3与Al5Mo间出现Al4Mo相.界面反应的动力学分析表明,873-913 K条件下,Mo-Al界面反应初生相孕育期为52-34.5 min;Al原子在Mo-Al界面新生相内和Mo箔内的扩散指前因子D01和D02分别为4.61×10-2和2.05×10-2cm2/min,扩散激活能GAl-1和GAl-2分别为0.98和1.48 eV.
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