Japan Society of Civil Engineers 2020 Annual Meeting
Sep 9 - Sep 11, 2020Held Online
Japan Society of Civil Engineers 2020 Annual Meeting
Sep 9 - Sep 11, 2020Held Online
[I-09]Electrochemical analysis and SEM-EDX characterization of laser-treated weathering steel plate
〇Maoling ZHAO1, Shigenobu KAINUMA1, Shusen ZHUANG1, Muye YANG1, Manabu HARAGUCHI2, Takahiro ASANO3(1.Kyushu University, 2.TOYOKOH Inc., 3.West Nippon Expressway Company Ltd.)
Keywords:
Weathering steel,Electrochemical properties,Laser irradiation,Corrosion resistance,SEM-EDX analysis
Weathering steel (WS) structures are expected to have corrosion resistance. High power laser is a promising technique for surface preparation, with advantages of effective cleaning and environment-friendly. This study reports a comparative study on the electrochemical properties of WS pretreated by continuous wave (CW) laser and milling process, the surface chemical composition was identified by using SEM-EDX analysis. The result shows that corrosion resistance of WS improved after laser irradiation due to oxide layer formed on the surface.