Nucleation and growth microstructural study of ti films on 304 SS substrates

coating of steel surfaces with titanium films has been studied with the objective to protect them against corrosion, and to create an intermediate film for cvd diamond and tin film deposition. in this work, the nucleation, growth mechanisms and microstructural formation of the titanium films deposited on 304 stainless steel (304 ss) substrate are presented and discussed. the titanium films of variable thickness were obtained by vapour phase deposition produced by electron beam. the surfaces of these samples were observed by scanning electron microscopy. the cross sections of these samples were observed by using an atomic force microscope. the ti film-304 ss interfaces were analyzed by x-ray diffraction. the results showed that titanium films have a columnar growth. the ti film-304 ss interface had a residual compression stress at room temperature due to the inter-diffusion process.