روش جديد توليد پانل ساندويچي فلزات شامل لايه متخلخل مياني با استفاده از فرايند سنتز احتراقي

A novel method for making metallic sandwich panels with foam core using self-propagating high temperature synthesis

In this method aluminum and NaCl powders are mixed together with specified weight ratio. Then the mixed powder was pressed and form in a mold. A mixed powder of aluminum and copper oxide with stochiometric ratio was covered over both surfaces of preformed shape. The covered perform was placed between two aluminum sheets and heated under static pressure. During heating SMS reaction occurs in the interface of sheet and the perform core. The resulting heat of this exothermic reaction causes to join the sheets to the core by melting the interface and nearby. In order to evaluate the shear strength of the interface the shear test was applied to sandwich panels and the results were compared with diffusion bonded sandwich panelʹs. The results show that metallic sandwich panels produced by using SHS method have high joint strength than the diffusion binding method and the maximum shear strength of the interface is reached in shorter heating time.