Laser Treatment as a New Approach to the Passivation of Iron-Based Historical Monuments

This article is devoted to the study of possibility passivation iron-based metallic materials. The experimental results obtained for laser treatment carbon steel model samples by radiation repetitively pulsed and continuous-wave 1.064 µm Nd:YAG lasers are described. It shown that allows formation dense protection films, 62–77 microns thick, on surface. films enhance anticorrosion properties metal. Exposure reduces surface roughness (from Ra = 0.53 0.38 µm). Laser power densities 10.2 × 105 W/cm2 10.7 these two generating modes, respectively, correspond optimum (in terms degree corrosion resistance) modes treatment. conducted studies show application Nd: YAG a promising method artworks created from cast iron. One most applications proposed iron historical monuments.