Characterization of metal surfaces irradiated by a long-pulse KrF excimer laser Available to Purchase

Metallic samples have been irradiated by a long-pulse (τ >300 ns) KrF laser. The experiments have been performed with an energy density of 0,3 to 120 J/cm² and a power density of 1 to 400 MW/cm². The samples investigated were pure aluminum (1050 A: 99,5% Al), aluminum alloy (2017A), constructional steel (35NCD16: 0,35% C, 4% Ni, 1,8% Cr) and titanium alloy (Ti6A14V). They were polished to obtain a roughness 10<Ra<0,08 μm and stress- relief heat treated for some stress measurements after irradiation. The improvement or the decrease of the mechanical properties of these metallic samples and some potential applications are discussed.