Bonding process for aluminum foams using foaming of aluminum precursor

提出了泡沫铝的一种粘接方法。泡沫铝可以在不坍塌的情况下结合在一起，密度也不会增加。在本研究中，对发泡粘接的效果进行了实验研究。该钎焊前驱体是用钎焊铝合金制成的。由于发泡剂颗粒分散在前驱体中，前驱体通过加热发泡。将前驱体放入两个有槽的纯铝泡沫塑料中，并在前驱体的熔点上加热。两个开槽的纯铝泡沫塑料可以通过发泡粘接进行粘接。然而，发泡粘接的粘接强度低于胶粘剂。对纯泡沫铝与钎焊铝的结合区域进行了显微镜观察。粘结边界清晰可见。为了获得发泡粘接的高粘接强度，需要对其进行表面处理。

The foaming bonding was proposed as a bonding method for aluminum foams. The aluminum foams can be bonded without collapse of the cell wall and density increase. In this study, the effectiveness of the foaming bonding was investigated experimentally. The brazing precursor was manufactured from brazing aluminum alloy. The precursor foams by heating because the foaming agent particles were dispersed in the precursor. The precursor was put into two grooved pure aluminum foams and heated over the melting point of the precursor. Two grooved pure aluminum foams can be bonded by foaming bonding. However, the bonding strength with foaming bonding was lower than that of the adhesive. Microscopy of the bonded area between brazing aluminum and pure aluminum foams was carried out. The bonding boundary was clearly observed. The surface treatment should be considered in order to obtain the high bonding strength with foaming bonding.