In this paper

contact brazing technique was used to weld nickel and copper on the surface of stainless steel

and Mg powder was added as the intermediate reaction layer for brazing. The connection between 3003 aluminum alloy and stainless steel was carried out. The mechanical properties of welded joints were measured by universal testing machine. The microstructures and element distributions of the joints were observed by scanning electron microscopy（SEM）. The interface morphology

phase composition and connection mechanism were analyzed. When the brazing temperature is 560 ℃ and welding pressure is 0.1 MPa

effective connection holding time is 15 min for contact reactive brazing of the two joints the maximum shear strength of 23.1 MPa

the average shear strength of 21.6 MPa

filler metal Al atom diffusion is obvious

and the formation of Al-Mg

Al-Cu

Al-Fe and other intermetallic compounds.