中文摘要：

采用固相真空扩散连接方法，在873—913K保温40-240min条件下对轧制厚度分别为20和60μm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Al8Mo3-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913K保温240min后，Al8Mo3与Al5Mo间出现Al4Mo相．界面反应的动力学分析表明，873—913K条件下，MoAl界面反应初生相孕育期为52—34．5min；Al原子在MoAl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1．48eV．

英文摘要：

Mo and Al rolled foils with 20 and 60μm in thickness respectively, were diffusively bonded at 873--913 K for 40--240 min. Primary phase formed during Mo A1 interfacial reaction is Al8Mo3, which nucleated in Mo foils and grew up with breaking the covering Mo layer. With diffusion bonding time increasing, Al8Mo3, Al5Mo and Al12Mo layers presented between Mo and Al, and Al4Mo appeared between Al8Mo3 and Al5Mo after bonding at 913 K for 240 min. Kinetics analysis indicated that the incubation period of primary phase decreased from 52 to 34.5 min when bonding temperature increased from 873 to 913 K, the pre exponential factor and diffusion activation energy for an A1 atom in the phases produced by Mo-Al reaction are 4.61×10^-2 cm2/min and 0.98 eV respectively, correspondingly, those for an Al atom in Mo foils are 2.05×10^-2 cm2/min and 1.48 eV.