Identification of Corrosion Products on Fe and Cu Metals using Spectroscopic Methods

Abstract

In this study, the Fourier-transform infrared absorption and the Raman spectroscopies for analysis of corrosion products formed on the Fe and Cu metal surfaces after deposition in the chloride containing solution, were used. The obtained spectral patterns show that main constituent species of the corrosion products for Fe metal sample is lepidocrocite, while in the case of Cu surface there is formed mainly paratacamite. The obtained results confirm that application of vibrational spectroscopic methods is precise tool for identification and analysis of the corrosion products.

Environment-friendly and biodegradable a-Fe2O3/C20H38O11nanocomposite growth to lengthen the Solanum lycopersicum storage process

“…The peak at 1402 cm −1 vibration band related to the other alkane, polysaccharides and 1611 cm −1 , 1604 cm −1 may simply be a broad, vibration band related to ketones, monoterpenes representative of VOCs present at the ripen phase of tomato fruits [35]. The advent of strong and broad intensity bands at 649 cm −1 , 664 cm −1 confirmed the presence of Fe-O starching in all tomato samples including controls [36]. Merged peaks were observed at 2163 cm −1 , 2178 cm −1 of C-C alkynes and 2618 cm −1 , 2174 cm −1 of C-H aldehydes secondary metabolites of tomato.…”

Spongin as a Unique 3D Template for the Development of Functional Iron-Based Composites Using Biomimetic Approach In Vitro

“…The most intense band at 1021 cm −1 in the FT-IR spectra is associated with lepidocrocite (γ-FeOOH) [ 54 ]. The bands at 1150 cm −1 and 740 cm −1 can also be assigned to OH deformation and bending in γ–FeOOH [ 55 ]. The high-intensity bands at 1021 cm −1 and 740 cm −1 may suggest that a well-crystallized lepidocrocite phase is strongly present.…”

Assessment of Foundry Chromite Sand Crushability under Thermal-Mechanical Loading

“…However, no traces of FeCO3 were found, but the Raman results reported in Fig. 4 and Table 4 show that the corrosion products observed were mainly composed of magnetite (Fe3O4) and α-Fe2O3 or/and γ-Fe2O3 [29][30][31]. The presence of these species is likely ascribed to the decomposition of FeCO3, according to the following reaction [9,27]:…”