Assisted with the surface coating of the mixed slurry of silica sol carrying SiC reinforcement

the SiC+SiO

2

sol-Al composite sheet was fabricated by laminating hot rolling

and microstructure and mechanical properties of the composites were investigated.The results indicate that the interface in SiC+SiO

2

sol-Al composite sheet is well bonded and the surface is covered with a certain amount of SiO

2

and a small amount of Al

2

O

3

. The introduced SiC particles are intermittently and evenly distributed in the interlayer of the aluminum foil substrate

which is conducive to interfacial load transfer and makes the grain size of the aluminum foil in SiC+SiO

2

sol-Al composite sheet more refine and uniform.The fracture mechanism is characterized by ductile fracture and delamination tearing of single-phase aluminum foil substrate layer.Compared with the pure-Al laminated plate

the tensile strength of the composite is increased and the elongation is decreased