Effects of chloride ions on corrosion of ductile iron and carbon steel in soil environments

Abstract Chloride is reported to play a significant role in corrosion reactions, products and kinetics of ferrous metals. To enhance the understanding of the effects of soil environments, especially the saline soils with high levels of chloride, on the corrosion of ductile iron and carbon steel, a 3...

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Autores principales:	Yarong Song, Guangming Jiang, Ying Chen, Peng Zhao, Yimei Tian
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0195f64056e84c219f0f3f2cd5b029e5
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spelling	oai:doaj.org-article:0195f64056e84c219f0f3f2cd5b029e52021-12-02T16:06:27ZEffects of chloride ions on corrosion of ductile iron and carbon steel in soil environments10.1038/s41598-017-07245-12045-2322https://doaj.org/article/0195f64056e84c219f0f3f2cd5b029e52017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07245-1https://doaj.org/toc/2045-2322Abstract Chloride is reported to play a significant role in corrosion reactions, products and kinetics of ferrous metals. To enhance the understanding of the effects of soil environments, especially the saline soils with high levels of chloride, on the corrosion of ductile iron and carbon steel, a 3-month corrosion test was carried out by exposing ferrous metals to soils of six chloride concentrations. The surface morphology, rust compositions and corrosion kinetics were comprehensively studied by visual observation, scanning electron microscopy (SEM), X-Ray diffraction (XRD), weight loss, pit depth measurement, linear polarization and electrochemical impedance spectroscopy (EIS) measurements. It showed that chloride ions influenced the characteristics and compositions of rust layers by diverting and participating in corrosion reactions. α-FeOOH, γ-FeOOH and iron oxides were major corrosion products, while β-Fe8O8(OH)8Cl1.35 rather than β-FeOOH was formed when high chloride concentrations were provided. Chloride also suppressed the decreasing of corrosion rates, whereas increased the difficulty in the diffusion process by thickening the rust layers and transforming the rust compositions. Carbon steel is more susceptible to chloride attacks than ductile iron. The corrosion kinetics of ductile iron and carbon steel corresponded with the probabilistic and bilinear model respectively.Yarong SongGuangming JiangYing ChenPeng ZhaoYimei TianNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yarong Song Guangming Jiang Ying Chen Peng Zhao Yimei Tian Effects of chloride ions on corrosion of ductile iron and carbon steel in soil environments
description	Abstract Chloride is reported to play a significant role in corrosion reactions, products and kinetics of ferrous metals. To enhance the understanding of the effects of soil environments, especially the saline soils with high levels of chloride, on the corrosion of ductile iron and carbon steel, a 3-month corrosion test was carried out by exposing ferrous metals to soils of six chloride concentrations. The surface morphology, rust compositions and corrosion kinetics were comprehensively studied by visual observation, scanning electron microscopy (SEM), X-Ray diffraction (XRD), weight loss, pit depth measurement, linear polarization and electrochemical impedance spectroscopy (EIS) measurements. It showed that chloride ions influenced the characteristics and compositions of rust layers by diverting and participating in corrosion reactions. α-FeOOH, γ-FeOOH and iron oxides were major corrosion products, while β-Fe8O8(OH)8Cl1.35 rather than β-FeOOH was formed when high chloride concentrations were provided. Chloride also suppressed the decreasing of corrosion rates, whereas increased the difficulty in the diffusion process by thickening the rust layers and transforming the rust compositions. Carbon steel is more susceptible to chloride attacks than ductile iron. The corrosion kinetics of ductile iron and carbon steel corresponded with the probabilistic and bilinear model respectively.
format	article
author	Yarong Song Guangming Jiang Ying Chen Peng Zhao Yimei Tian
author_facet	Yarong Song Guangming Jiang Ying Chen Peng Zhao Yimei Tian
author_sort	Yarong Song
title	Effects of chloride ions on corrosion of ductile iron and carbon steel in soil environments
title_short	Effects of chloride ions on corrosion of ductile iron and carbon steel in soil environments
title_full	Effects of chloride ions on corrosion of ductile iron and carbon steel in soil environments
title_fullStr	Effects of chloride ions on corrosion of ductile iron and carbon steel in soil environments
title_full_unstemmed	Effects of chloride ions on corrosion of ductile iron and carbon steel in soil environments
title_sort	effects of chloride ions on corrosion of ductile iron and carbon steel in soil environments
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/0195f64056e84c219f0f3f2cd5b029e5
work_keys_str_mv	AT yarongsong effectsofchlorideionsoncorrosionofductileironandcarbonsteelinsoilenvironments AT guangmingjiang effectsofchlorideionsoncorrosionofductileironandcarbonsteelinsoilenvironments AT yingchen effectsofchlorideionsoncorrosionofductileironandcarbonsteelinsoilenvironments AT pengzhao effectsofchlorideionsoncorrosionofductileironandcarbonsteelinsoilenvironments AT yimeitian effectsofchlorideionsoncorrosionofductileironandcarbonsteelinsoilenvironments
_version_	1718384943441117184

Effects of chloride ions on corrosion of ductile iron and carbon steel in soil environments

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