Diffusion welding of SiCp/2014Al composites using Ni as interlayer

SiCp/2014Al composites were bonded with the vacuum diffusion welding technique using Ni as the interlayer metal. Ni and Al were interdiffused and there were intermetallic compounds formed in the inter transition layer, which was composed of Ni₃Al//NiAl//NiAl₃. The relation between the diffusion distance and the element concentration was calculated according to Fick’s second law. The relations of the diffusion concentration and the diffusion welding technique parameters were calculated.