維持管理(耐候性鋼)(1)

[I-09] Electrochemical analysis and SEM-EDX characterization of laser-treated weathering steel plate

〇趙 茂伶¹、貝沼 重信¹、庄 樹森¹、楊 沐野¹、原口 学²、浅野 貴弘³ (1.九州大学、2.トヨコー(株)、3.西日本高速道路(株))

キーワード：耐候性鋼、電気化学特性、レーザー素地調整、耐食性、SEM-EDX分析

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.