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Zhang, Xin; Xiao, Kui; Dong, Chaofang; Wu, Junsheng; Li, Yong; Huang, Yizhong

doi:10.1016/j.engfailanal.2011.03.007

Cited by 136 publications

(37 citation statements)

References 20 publications

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“…According to the characteristic Raman peaks of the iron oxides (Singh et al, 2008;Zhang et al, 2011), it was concluded that the main components of the outer and inner rust layers were ␥-FeOOH and Fe 3 O 4 , respectively. The content of ␣-FeOOH was very low.…”

Section: Analysis Results From Rsmentioning

confidence: 99%

Electrochemical study on the corrosion of rusted carbon steel in dilute NaCl solutions

Cao

Yin

et al. 2014

Anti-Corrosion Methods and Materials

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Purpose -The purpose of this study was to investigate the corrosion of rusted carbon steel in dilute NaCl solution, with the purpose of exploring the effect of the rust layer on metal corrosion and establishing a corrosion model for rusted iron. Design/methodology/approach -The corrosion behavior of rusted carbon steel in dilute NaCl solution was studied by means of weight-loss determinations, scanning electron microscopy, Raman spectrometry and electrochemical techniques. Findings -The results indicated that carbon steel had a similar corrosion behavior in all three NaCl solutions. The iron rust, which consisted of a thin ␥-FeOOH layer and a thick Fe 3 O 4 layer, can facilitate the corrosion process of carbon steel via reduction of ␥-FeOOH and the large area cathode of Fe 3 O 4 . Hence, the corrosion rate of carbon steel was accelerated significantly and finally was determined by the limiting diffusion rate of oxygen. Originality/value -A corrosion model of rusted carbon steel was established, suggesting that iron rust formed in all slightly acidic waters with low alkalinity probably promotes the corrosion of carbon steel. Anti-corrosion measures for iron in this type of solution, such as desalination water, should be aimed to reduce the promotional effect of the rust layer on metal corrosion.

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Section: Analysis Results From Rsmentioning

confidence: 99%

Electrochemical study on the corrosion of rusted carbon steel in dilute NaCl solutions

Cao

Yin

et al. 2014

Anti-Corrosion Methods and Materials

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“…38 Therefore, under the same extraction conditions, extract A contained numerous corrosion products, whereas extract C was still clear, that is, precipitation was determined by the medium applied during extraction. However, DMEM with serum is preferred for extraction because of its ability to support cellular growth and extract both polar and nonpolar substances.…”

Section: Cytotoxicity Testing Methodology For Bioabsorbable Iron-basementioning

confidence: 99%

Cytotoxicity and its test methodology for a bioabsorbable nitrided iron stent

Lin

Gui

Cao³

et al. 2014

J. Biomed. Mater. Res.

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Comprehensive assessments of the cytotoxicity of nitrided iron, a promising bioabsorbable metallic material, were conducted using in vitro methods. Extracting and standing experiments were conducted to determine the factors influencing the precipitation of the extract during extraction and incubation. The MTT method, fluorescent staining, and direct contact method were used to explore the in vitro cytotoxicity of nitrided iron stent extracts, nitrided iron foils, and their bulk corrosion products. The extracting and standing experiments confirmed that the extraction medium and available oxygen are crucial for precipitation during the extraction and incubation processes. In the MTT test, the extract of nitrided iron stents with a high iron ion concentration (124.11 ± 7.55 μg/mL) was not cytotoxic to L929 fibroblasts. Thus, the in vitro cytotoxicity of nitrided iron stents was actually caused by the size effect of corrosion particles and not the material itself. Test methodology for in vitro cytotoxicity of biodegradable iron-based materials was analyzed, and the results demonstrate that multiple methods should be combined for comprehensive evaluation of the cytocompatibility of bioabsorbable iron-based materials to get an impartial conclusion.

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“…cm -1 belong to α-FeOOH [21,22] .The Raman reflection of γ-FeOOH mainly attributes to the residual of outer rust. Inner rust on 300M formed by total immersion and salt spraying is Fe 3 O 4 ; and inner rust formed by periodic immersion is mainly composed of α-FeOOH/α-Fe 2 O 3 .…”

Section: Rust Composition Analysismentioning

confidence: 98%

“…In the Raman spectra, the characteristic peak at 680 cm -1 is assigned to Fe 3 O 4 . The characteristic peaks of γ-FeOOH are 255, 380, 528, 654, 1 054, and 1 307 cm -1 [21,22] . Peaks at 225 cm -1 , 295 cm -1 confirm existence of α-Fe 2 O 3 [21,22] .…”

Section: Corrosion Weight-loss Testmentioning

confidence: 99%

Corrosion behavior of ultra-high strength steel 300M in different simulated marine environments

Guo

Liu

et al. 2016

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Corrosion behavior of 300M in neutral corrosion environments containing NaCl simulated by total immersion (TI), salt spraying (SS) and periodic immersion (PI), was investigated by surface analysis techniques, corrosion weight-loss method, and electrochemical measurements. In total immersion environment, rust on the steel consisted of a porous outer rust layer with main constituent of γ-FeOOH, and an inner rust layer of dense Fe 3 O 4 film with network broad cracks. In salt spraying environment, outer rust with main composition of γ-FeOOH/α-FeOOH/Fe 3 O 4 was compact, and inner rust showed dense Fe 3 O 4 film. Rust formed by periodic immersion exhibited a compact outer rust layer with constituent of α-FeOOH/γ-FeOOH/Fe 3 O 4 and an inner rust layer with composition of α-FeOOH/α-Fe 2 O 3 ; inner rust showed a ultra-dense film adherent to the steel. The corrosion rate showed a rule of v ss (salt spraying)>v ti (total immersion)>>v pi (periodic immersion) in 0-240 h, and v ss ≈v ti »v pi in 240-720 h. The rust formed by periodic immersion was dense and compact, with stable electrochemical properties, and had excellent protection on the steel. Humidity and oxygen concentration in all the environments played major roles in rust formation.

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In situ Raman spectroscopy study of corrosion products on the surface of carbon steel in solution containing Cl− and SO42-

Cited by 136 publications

References 20 publications

Electrochemical study on the corrosion of rusted carbon steel in dilute NaCl solutions

Electrochemical study on the corrosion of rusted carbon steel in dilute NaCl solutions

Cytotoxicity and its test methodology for a bioabsorbable nitrided iron stent

Corrosion behavior of ultra-high strength steel 300M in different simulated marine environments

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