The application of infrared spectroscopy to the study of atmospheric rust systems—I. Standard spectra and illustrative applications to identify rust phases in natural atmospheric corrosion products

Raman, A.; Kuban, B.; Razvan, A.

doi:10.1016/0010-938x(91)90049-u

Cited by 138 publications

(71 citation statements)

References 16 publications

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“…24,25 As evident in Fig. 5(a), C-FeOOH was formed in the outer surface of the rust deposit exposed to the external environment with no C-FeOOH observed in the middle and inner rust deposit zones.…”

Section: Phase Analysis Of the Field Rust Depositmentioning

confidence: 92%

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Corrosion Performance of High Strength Low Alloy Steel AISI 4135 in the Marine Splash Zone

2017

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The corrosion behavior of high strength low alloy AISI 4135 steel was studied following extended exposure to a Qingdao field environment. When electrochemically active γ-FeOOH was formed in conjunction with easily reducible β-FeOOH, these corrosion products acted to accelerate corrosion attack in the marine splash zone (i.e., steel structure above the water line that is splashed by sea spray). It had also been observed that the pH beneath the rust layer exhibited a minimum during the non-splash part of wet and non-splash corrosion cycling. These acidic conditions contributed significantly to an increase in the rate of localized corrosion, both beneath the rust deposits and within rust cracks and voids within pockets of rust deposits over the steel surface.

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Section: Phase Analysis Of the Field Rust Depositmentioning

confidence: 92%

“…Table 3. IR absorption data for some standard forms of rust 24,25 (these are used as the benchmarks in Fig. 5).…”

Section: Ph Open Circuit Potential and CLmentioning

confidence: 99%

Corrosion Performance of High Strength Low Alloy Steel AISI 4135 in the Marine Splash Zone

2017

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“…Four main absorption peaks are observed at approximately 1142, 1023, 750, and 583 cm À1 , which is characteristic of the bonding structure in -FeOOH. [20][21][22] The absorption band at approximately 1142 cm À1 is assigned to the in-plane Fe-O-H bending vibration, and it is shifted to a À1 is observed in Fig. 5(c), which is caused by Fe-O-Si bending vibration.…”

Section: Infrared Spectramentioning

confidence: 96%

“…5(c), which is caused by Fe-O-Si bending vibration. 20,21) Thus, the incorporation of foreign ions, presumably silicate ions from alloying elements, in ferric oxyhydroxide is suggested by FT-IR spectra. This result corresponds to the structural and morphological results obtained by quantitative X-ray diffraction method and transmission electron microscopy.…”

Section: Infrared Spectramentioning

confidence: 99%

Atomic-Scale Structure and Morphology of Ferric Oxyhydroxides Formed by Corrosion of an Iron–Silicon Alloy

et al. 2006

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Quantitative X-ray structural analysis using an in-house X-ray diffraction apparatus has been used for characterizing the atomic-scale structure of the -FeOOH (lepidocrocite) particles prepared by dipping a pure iron and an iron-silicon alloy into aqueous solutions containing sodium chloride. The morphology of the -FeOOH particles was observed by transmission electron microscopy (TEM), and their bonding structure were analyzed using Fourier transform infrared spectroscopy (FT-IR). The realistic atomic-scale structures in the -FeOOH particles were estimated by fitting the interference functions with the help of the reverse Monte Carlo (RMC) simulation technique. The results showed that the linkages of fundamental FeO 6 octahedral units in the particles were deviated from the ideal crystal structure. The structural deviation is considered to be due to the incorporation of foreign ions during the formation of these particles in the aqueous solutions.

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“…19) Water-soluble iron chloride and sulphate as residual concentration in the rust layers are hard to be detected. 20) In all the spectra, the absorption peak around 1620 cm ¹1 corresponds to physisorbed water.…”

Section: ¹1mentioning

confidence: 99%

Weathering Steel in Industrial-Marine-Urban Environment: Field Study

et al. 2016

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In the present field study, we report the exposure of weathering steels in the industrial-marine-urban environment at Ennore, located near the east coast of India for 3 years. The Corrosion products viz., iron oxyhydroxides and oxides present in the rust layers were characterized using ATR-FTIR, XRD studies and quantified using TGA analysis. The specific surface area of the rust particles formed during the corrosion process were determined using N 2 adsorption isotherm studies. The morphology of the corrosion products were elucidated using SEM. ATR-FTIR and XRD studies showed that the corrosion products formed on the skyward surfaces were highly more crystalline than those on the the earthward surfaces. TGA showed that the iron oxyhydroxides were major corrosion products. N 2 adsorption-desorption studies confirmed the formation of compact inner rust layers with high specific surface area (SA). SEM analysis revealed that the skyward surface was smooth and compact while the earthward surface were cracked and porous. SEM images confirmed the formation of characteristic morphological structures such as sandy crystal (lepidocrocite), needle-like (goethite), cotton ball (goethite) and cigar shaped (akaganeite) structures. Further, it revealed the formation of goethite on the skyward surface as a major constituent phase in the rust layer, which was influenced by the presence of SO 2 content in the environment.

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The application of infrared spectroscopy to the study of atmospheric rust systems—I. Standard spectra and illustrative applications to identify rust phases in natural atmospheric corrosion products

Cited by 138 publications

References 16 publications

Corrosion Performance of High Strength Low Alloy Steel AISI 4135 in the Marine Splash Zone

Corrosion Performance of High Strength Low Alloy Steel AISI 4135 in the Marine Splash Zone

Atomic-Scale Structure and Morphology of Ferric Oxyhydroxides Formed by Corrosion of an Iron–Silicon Alloy

Weathering Steel in Industrial-Marine-Urban Environment: Field Study

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The application of infrared spectroscopy to the study of atmospheric rust systems—I. Standard spectra and illustrative applications to identify rust phases in natural atmospheric corrosion products

Cited by 138 publications

References 16 publications

Corrosion Performance of High Strength Low Alloy Steel AISI 4135 in the Marine Splash Zone

Corrosion Performance of High Strength Low Alloy Steel AISI 4135 in the Marine Splash Zone

Atomic-Scale Structure and Morphology of Ferric Oxyhydroxides Formed by Corrosion of an Iron&ndash;Silicon Alloy

Weathering Steel in Industrial-Marine-Urban Environment: Field Study

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Atomic-Scale Structure and Morphology of Ferric Oxyhydroxides Formed by Corrosion of an Iron–Silicon Alloy