【摘要】 以Al/Cu ,Al/Si接触反应偶为例 ,研究了不同基体与反应材料组合下 ,共晶液相的产生及其铺展行为。结果表明 :Al/Cu ,Al/Si接触反应偶中共晶液相的产生具有明显的方向性—优先在Al侧产生 ,这是扩散偶之间的互扩散系数不等所造成的必然结果。而在接触反应钎焊的中间层材料选择过程中 ,考虑接触反应液相产生的方向性是发挥接触反应钎焊优越性的保障更多还原

【Abstract】 The production and spread behavior of the eutectic liquid in the contact reaction composing of different substrate and reactant was investigated by taking the example of Al/Cu and Al/Si contact reactive couple. Analysis results show that the production of the eutectic liquid has the orientation, and it prior to appear on the side of aluminum, which is caused by the difference between the diffusion coefficients of the diffusion couple. So, in order to gain good brazed joint in contact reactive brazing, the orientation of the eutectic liquid must be taken into account during selecting an interlayer.更多还原