Surface modification of stainless steel by laser-induced wet treatment in aluminum nitrate solution

Atsushi Ezura, Hikaru Yoshimine, Kazutoshi Katahira, Jun Komotori

Research output: Contribution to journalArticle


A laser-induced wet treatment was conducted on the stainless steel (SUS316L) surfaces. The disk-shaped samples were soaked in an aluminum nitrate solution and subsequently irradiated by a Yb fiber pulsed laser beam. The treated surfaces were observed with a scanning electron microscope, and analyzed with an energy dispersive X-ray spectrometer and X-ray diffraction. It was confirmed that the proposed treatment generated an Al- and O-rich layer, which was identified as Fe2+Al2O4 structure. The thickness of the generated layer increased with increasing the Al concentration of solution, increasing laser power and decreasing laser scan rate.

Original languageEnglish
Pages (from-to)72-77
Number of pages6
JournalSeimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering
Issue number1
Publication statusPublished - 2017



  • Al(NO) solution
  • Fiber laser
  • Local processing
  • Surface treatment
  • SUS316L

ASJC Scopus subject areas

  • Mechanical Engineering

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