Magnetic Property of Akaganeite Produced By Corrosion of Steels
Journal Title: International Journal of Engineering and Science Invention - Year 2018, Vol 7, Issue 1
Abstract
For application of cosmic-ray muon spin rotation method to inspect corrosion state of steels in largescale architecture nondestructively, products of accelerated corrosion of steels for pre-stressed concrete method were characterized and its magnetic behavior is measured. Single phase of akaganeite, -FeO(Cl, OH) was found predominantly in brittle lump of rust, while remaining part which keeps original form with surface rust is ferromagnetic steel inside. Magnetization of akaganeite thus produced shows broad peak between 80 and 130K with irreversibility between zero field cooling and field cooling below 270K, suggesting existence of spin frustration similar to spin glass system. Above 270K, corrosion products are paramagnetic. It means that feasibility of cosmic-ray muon spin rotation is powerful tool to investigate corrosion state of steels inside large-scale architecture.
Authors and Affiliations
Takuro Fujimaki, Ichiro Shiraki
Keywords
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