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Laser Removal of Contaminants on the Metal Surface

[+] Author Affiliations
Hui-Jun Won, Sun-Hee Jung, Chong-Hun Jung, Byung-Seon Choi, Kune-Woo Lee, Jei-Kwon Moon

KAERI, Daejeon, Korea

Paper No. ICEM2011-59343, pp. 577-582; 6 pages
doi:10.1115/ICEM2011-59343
From:
  • ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management
  • ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management, Parts A and B
  • Reims, France, September 25–29, 2011
  • Conference Sponsors: Nuclear Engineering Division and Environmental Engineering Division
  • ISBN: 978-0-7918-5498-3
  • Copyright © 2011 by ASME

abstract

A Q-switched Nd:YAG laser with a 532 nm and 450 mJ/pulse was employed to study the decontamination characteristics of Type 304 stainless steel specimens and aluminum specimens artificially contaminated with CsNO3 , Co(NH4 )2 (SO4 )2 , Eu2 O3 and CeO2 , respectively. The relative atomic molar percent of the contaminants on metal surface before and after laser irradiation was determined by EPMA. The morphology of specimen surface was examined by SEM. The ablation behavior of contaminants on Type 304 stainless steel specimens was investigated for the decontamination variables such as a number of laser shots, laser fluence and an irradiation angle. Their optimum values were found to be 8, 13.3 J/cm2 and 30°, respectively. The removal of contaminants on aluminum surface, however, was found to be more difficult by laser.

Copyright © 2011 by ASME

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