Elemental composition of chromium/titanium system after compression plasma flows influence

The results of elemental composition of chromium/titanium system treated by compression plasma flows (CPF) are presented in the work. The samples were prepared with chromium coating deposition (1 μm thick) and next CPF influence with absorbed energy density 19 - 35 J/cm2. Numerical solution of thermo conductivity equation showed that the CPF treatment provides the melting of the near surface layer and high solidification speed (105 - 107 K/s). The nitride TiN forms in result of high temperature (more than 2000 K) as an outer dendrite layer. This layer prevents the nitrogen penetration into the melted zone and because of it, the nitrogen concentration is decreased with absorbed energy density rising. Also the outer nitride layer results in formation near surface area with decreased chromium concentration. (authors)