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Proceedings Paper

Laser anti-corrosion treatment of metal surfaces
Author(s): Alexey Iakovlev; Julia Ruzankina; Sergey Kascheev; Oleg Vasilyev; V. Parfenov; Alexsandr Grishkanich
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Paper Abstract

Metal corrosion is the main problem of all metal constructions and buildings. Annual losses resulting from corrosion in industrialized countries are estimated in the range from 2% to 4 % of gross national product. We used a CW fiber laser with the wavelength of 1064 nm and a power up to 18,4 W for laser irradiation of metal surfaces. We report on the optimal treatment of the metal corrosion with laser power density in the range of 93,3÷ 95,5 W/cm2. After the process of laser treatment of steel surface we observe decreased roughness of steel and a small change in its chemical composition. There was an active research of new ways to improve the surface properties of metals and to increase the corrosion resistance. One of the breakthrough methods to protect the material against corrosion is laser treatment. We used a CW fiber laser operating at 1064 nm with up to 18,4 W output power. Experimentally, the samples (steel plates) were irradiated by laser for 35 seconds. Surface treatment of metal was provided at a room temperature and a relative air humidity of 55%. The impact of laser radiation on the surface has contributed to a small change of its chemical composition. It forms protective fluoride coating on the metal surface. The laser radiation significantly increased the concentration of fluorine in the metal from 0.01 atom. % to 5.24 atom. %. The surface roughness of steel has changed from 3.66 μ to 2.66 μ. Protective coatings with best resistance to corrosion were obtained with laser power density in a range of 93.3 W/cm2 to 95.5 W/cm2.

Paper Details

Date Published: 22 February 2017
PDF: 7 pages
Proc. SPIE 10097, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems VI, 100970S (22 February 2017); doi: 10.1117/12.2249953
Show Author Affiliations
Alexey Iakovlev, ITMO Univ. (Russian Federation)
Julia Ruzankina, ITMO Univ. (Russian Federation)
Sergey Kascheev, ITMO Univ. (Russian Federation)
Oleg Vasilyev, ITMO Univ. (Russian Federation)
V. Parfenov, ITMO Univ. (Russian Federation)
Saint Petersburg Electrotechnical Univ. "LETI" (Russian Federation)
Alexsandr Grishkanich, ITMO Univ. (Russian Federation)
Saint Petersburg Electrotechnical Univ. "LETI" (Russian Federation)


Published in SPIE Proceedings Vol. 10097:
High-Power Laser Materials Processing: Applications, Diagnostics, and Systems VI
Stefan Kaierle; Stefan W. Heinemann, Editor(s)

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