Xuelei Jiang, Enen Li, Ying Xu, Tianwu Wang, Wenyu Xie. Optical Parameter Measurement and Characteristic Identification for Corrosion Products of Steel Materials Based on Terahertz Time-Domain Spectroscopy[J]. Acta Optica Sinica, 2023, 43(11): 1112003
- Acta Optica Sinica
- Vol. 43, Issue 11, 1112003 (2023)
Fig. 1. Schematic diagram of the transmission THz in ultra-wideband THz-TDS system
Fig. 2. THz-TDS signals of different corrosion product samples. (a) Time-domain signals; (b) frequency-domain signals
Fig. 3. Optical parameters of different samples. (a) Absorbance of corrosion products; (b) refractive index of corrosion products; (c) absorbance of corrosion products crystal; (d) refractive index of corrosion products crystal
Fig. 4. XRD results of different corrosion products
Fig. 5. Broadband THz-TDS determination of corrosion products crystals. (a) THz time-domain signals; (b) refractive indices;(c) identification of characteristic absorption peaks
Fig. 6. Broadband THz-TDS determination of corrosion products. (a) Time-domain signals; (b) identification of characteristic absorption peaks
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Table 1. Preparation of different corrosion product samples
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Table 2. Relative content of each component in corrosion products samples
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