Abstract
Physical and chemical transformations induced upon metallic materials such as aluminum alloys and steels under KrF excimer laser radiation have been studied in order to improve their mechanical and physical-chemical properties. The laser treatment leads, after laser surface remelting (LSR) process, to important changes in the topography, structure, phases and elements composition resulting in different hardness, wear properties and corrosion resistance. Up to now, the use of excimer lasers for industrial applications remains marginal in spite of the interest related to the short wavelength (better energetic coupling) and the reduced thermal effects in the bulk material. This paper concerns mainly the corrosion resistance improvement of metallic alloys irradiated at 248 nm. Electrochemical tests have revealed a significant change in the corrosion properties mainly due to chemical composition and structural modifications.
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