The Cathodic Reduction of Gamma-FeOOH, Gamma-Fe[sub 2]O[sub 3], and Oxide Films on Iron

Cohen, Morris; Hashimoto, Kôji

doi:10.1149/1.2396828

Cited by 66 publications

(17 citation statements)

References 8 publications

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“…In some previous work (14) cathodic reduction had been used to determine changes in a ~-FeOOH film when heated in a vacuum. The results of the present experiments are shown in Table II.…”

Section: Resultsmentioning

confidence: 99%

The Composition of Anodically Formed Iron Oxide Films

Cohen

Mitchell

Hashimoto

1979

J. Electrochem. Soc.

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“…In some previous work (14) cathodic reduction had been used to determine changes in a ~-FeOOH film when heated in a vacuum. The results of the present experiments are shown in Table II.…”

Section: Resultsmentioning

confidence: 99%

The Composition of Anodically Formed Iron Oxide Films

Cohen

Mitchell

Hashimoto

1979

J. Electrochem. Soc.

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“…The formation and composition of atmospheric rust films on carbon steel and weathering steels has been discussed extensively in the literature (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22).…”

Section: The First Is the Reaction Of Metal A With Environmental Specmentioning

confidence: 99%

Environmental Effects on Metallic Corrosion Products Formed in Short-Term Atmospheric Exposures

Flinn

Cramer

Carter

et al. 1986

ACS Symposium Series

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The Bureau of Mines has measured short-and long-term atmospheric corrosion damage on five metals and two metal-coated steel products at four sites in the east and northeast United States as part of the National Acid Precipitation Assessment Program to evaluate the effects of acid deposition on materials. The composition of the corrosion product on carbon steel, weathering steel, copper, zinc, and galvanized steel is relatively unchanged in 1-and 3-month exposures over a wide variety of environmental conditions. Spalling and runoff losses are observed on all metals. Massive reorganization of the corrosion film by a mechanism of cyclic dissolution and precipitation was observed on carbon steel, Cor-Ten A, zinc, and galvanized steel. Loss of corrosion product from zinc in runoff was a function of both dissolution in rain water and neutralization by hydrogen ion loading, with dissolution contributing the greater portion of the loss.The corrosion of metallic materials in the atmosphere has been studied extensively (1).The majority of the work in this area has been to determine the performance of materials and to evaluate mitigation techniques in environments of interest.With only a few exceptions (see for example references 2, 3), attempts have not been made in studies conducted in the United States to fully characterize the environment and to determine the relationships between components of the environment and the performance of the material of interest (see reference 4 for a recent assessment of this area). Adherent corrosion products are often characterized, but no attempts have been made, except in laboratory studies (5), to quantitatively relate the corrosion film chemistry to environmental parameters.In 1981, a field study was initiated by the Bureau of Mines to determine the effects of the environment, including acid deposition, on the corrosion of a number of commonly used metallic materials of construction.This study, which is fully described in a recent paper (6_), is being conducted at field sites where continuous air This chapter not subject to U.S.

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“…[5][6][7][8][9][10][11][12][13][14][15][16][17] Rust layers often form on the surface of steel structures experiencing a corrosion process, and the associated corrosion performance is dependent on a number of factors including rust formation, rust evolution and the inherent properties of the rust layers such as composition and structures. If pitting corrosion of HSLA steel occurs after prolonged exposure in the marine splash zone, as observed in R. Jeffery et al's exposure tests, 4 it can be speculated that the rust layer may contribute to the origins of pitting corrosion.…”

Section: Introductionmentioning

confidence: 99%

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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The Cathodic Reduction of Gamma-FeOOH, Gamma-Fe[sub 2]O[sub 3], and Oxide Films on Iron

Cited by 66 publications

References 8 publications

The Composition of Anodically Formed Iron Oxide Films

The Composition of Anodically Formed Iron Oxide Films

Environmental Effects on Metallic Corrosion Products Formed in Short-Term Atmospheric Exposures

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

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