Detection of iron corrosion by terahertz time-domain spectroscopy

Hui Zhao; Di-bo Wu; Hong-lei Zhan; Qing Sun; Kun Zhao

doi:10.1117/12.2214316

5 November 2015 Detection of iron corrosion by terahertz time-domain spectroscopy

Hui Zhao, Di-bo Wu, Hong-lei Zhan, Qing Sun, Kun Zhao

Proceedings Volume 9795, Selected Papers of the Photoelectronic Technology Committee Conferences held June–July 2015; 97953J (2015) https://doi.org/10.1117/12.2214316
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held June-July 2015, 2015, Hefei, Suzhou, and Harbin, China

Abstract

The iron tablets, which were exposed in salt spray with different periods, were investigated in the 0.2~2.0 THz using reflection-type terahertz time-domain spectroscopy (THz-TDS) in vacuum environment at room temperature. The sample signals are attenuated in comparison to the reference signals with increasing the corrosion time. The THz spectroscopy peak E_P and reflectivity (R) of samples strongly depended on corrosion time t with E_P ∝ t^-1 and R ∝ t^-1. The THz characteristics of iron sheets in salt spray indicate that reflection THz-TDS will contribute to the development of non-destructive testing of corrosion in pipelines.

Citation Download Citation

Hui Zhao, Di-bo Wu, Hong-lei Zhan, Qing Sun, and Kun Zhao "Detection of iron corrosion by terahertz time-domain spectroscopy", Proc. SPIE 9795, Selected Papers of the Photoelectronic Technology Committee Conferences held June–July 2015, 97953J (5 November 2015); https://doi.org/10.1117/12.2214316

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