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[I-34] Electrochemical, microstructure and XRD study on surface modification effects of laser-treated carbon steel

〇庄 樹森¹、貝沼 重信¹、趙 茂伶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：レーザー素地調整、電気化学、X線回折、熱影響部、耐食性

Laser cleaning has found successful applications in automotive, shipbuilding and artwork conservation, yet haven’t applied in the construction field. The laser beam have been expected to remove corrosion products and contaminations on the corroded surface completely. In this study, Polarization curves of laser-treated carbon steel plate were tested to reveal the effect of laser irradiation on electrochemical properties of carbon steel plate, and surface chemical composition was identified using X-ray diffraction (XRD). The correlation between corrosion resistance and laser treatment was established.