Influence of cations and anions on the formation of β-FeOOH

Kawamata, Takayuki; Nasu, Saburo; Segi, Takashi; Tazaki, Takashi; Harada, Miyuki; Morimoto, Shotaro; Kudo, Takeo

doi:10.1016/j.corsci.2004.10.014

Cited by 63 publications

(17 citation statements)

References 33 publications

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“…This result indicates that the Cl ¹ ions present in the thin electrolyte layer increased the corrosion rate of steel during the drying stage. The co-existing anions in the electrolyte affect the air oxidation of Fe 2+ to Fe 3+ 16) and the subsequent hydrolysis of Fe 3+ , 17,18) as well as the electrochemical reactions that occur in the thin electrolyte layer. 19) In the case of the electrolyte layer of an acidic NaCl solution, the anodic reaction is promoted by the Cl ¹ present.…”

Section: Effect Of Anion Type In Electrolyte Layer On Corrosionmentioning

confidence: 99%

Corrosion Behavior of Sn-Bearing Steel under Wet/Dry Cyclic Environments Containing Cl<sup>−</sup>

Sugae

Harada

Kudo³

2018

Mater. Trans.

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The corrosion potential and corrosion rate of steel under wet/dry transitions were investigated using the Kelvin probe/pressure difference measurement system in order to elucidate the effect of Sn on the corrosion of steel covered by a thin electrolyte film in wet/dry environments containing chloride ions (Cl ¹). The corrosion rate in the case of an electrolyte containing Cl ¹ during the drying stage was higher than that in the case of an electrolyte containing sulfate ions (SO 4 2¹). Cl ¹ accelerate the hydrolysis of Fe 3+ and lead to the acidification of the anode site in the thin electrolyte film, while also contributing to corrosion during the drying stage. The Sn-bearing steel showed a lower corrosion rate during the drying stage than that of the mild steel. This was because the Sn ions from the steel can exist stably in the acidic thin electrolyte film and inhibit the anodic reaction during the drying stage. Thus, the superior corrosion resistance of the Sn-bearing steel under atmospheric conditions is attributable to the retardation of the anodic reaction during drying by Sn ions.

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Section: Effect Of Anion Type In Electrolyte Layer On Corrosionmentioning

confidence: 99%

Corrosion Behavior of Sn-Bearing Steel under Wet/Dry Cyclic Environments Containing Cl<sup>−</sup>

Sugae

Harada

Kudo³

2018

Mater. Trans.

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show abstract

“…On the other hand, Ishikawa et al [5][6][7] showed that the crystallinity of akaganeite was appreciably reduced by adding SO 4 2À and HPO 4 2À , improved by adding SiO 3 2À , but it was slightly influenced by NO 3 À [7]. Kamimura et al [9] have also studied the influence of cations (Cr 3+ , Cu 2+ and Ni 2+ ) and anions (SO 4 2À and NO 3 À ) upon the formation of akaganeite. An important result is that the crystallinity of the powdered materials depends upon the combination of cations and anions.…”

Section: Introductionmentioning

confidence: 95%

57Fe Mössbauer study of β-FeOOH obtained in presence of Al3+ and Ti4+ ions

Barrero

García

Morales

et al. 2007

Physica B: Condensed Matter

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“…Kamimura et al 18) pointed out by Mössbauer spectroscopic study of -FeOOH that the particle size decreases by the effect of SO 4 2À ion and Cr incorporation into -FeOOH. The obtained low diffraction intensity of -FeOOH at the coated portions might be partly due to those effects onFeOOH.…”

Section: °8°10°12°14°16°18°20°-mentioning

confidence: 99%