材料と環境 Vol. 73 (2024), No. 9
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材料と環境 Vol. 73 (2024), No. 9
大気腐食形態におよぼす純鉄へのCr添加の影響
面田 真孝, 大塚 真司
pp. 218-224
DOI:
10.3323/jcorr.73.218抄録
Corrosion degradation of infrastructure steel structures in Japan is progressing. At present, maintenance is carried out by observation of the appearance and measurement of the remaining thickness of corroded steel plates. Since technology that enables simulation of remaining ultimate strength has been developed recently, advanced life-time prediction of infrastructure steels, referring even to the corrosion morphology, is now possible. Therefore, in this study, the corrosion form was evaluated by applying spatial statistics to the depth distribution using a laser displacement meter and the effect of Cr content in iron, which significantly varies the corrosion resistance in atmospheric corrosion environments, was quantitatively investigated.
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