2018
DOI: 10.1016/j.corsci.2017.10.017
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Galvanic effect of magnetite on the corrosion behavior of carbon steel in deaerated alkaline solutions under flowing conditions

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Cited by 45 publications
(16 citation statements)
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“…The properties of the passive film are relatively different from the corrosion product films such as FeCO 3 and some ferric oxides, which cannot be recovered once broken. The local damage of the corrosion product film induced by high fluid shear stress or sand impacts can result in the formation of macro-cell corrosion between the bare steel area and the area covered by the corrosion product film [2,121,122]. However, the restoration of the passive film can be finalized in a few milliseconds from the sand impingement and, thus, erosion-corrosion is hindered on the steel surface under a passive state.…”
Section: Understanding the Erosion-corrosion Behavior Of Steels Undermentioning
confidence: 99%
“…The properties of the passive film are relatively different from the corrosion product films such as FeCO 3 and some ferric oxides, which cannot be recovered once broken. The local damage of the corrosion product film induced by high fluid shear stress or sand impacts can result in the formation of macro-cell corrosion between the bare steel area and the area covered by the corrosion product film [2,121,122]. However, the restoration of the passive film can be finalized in a few milliseconds from the sand impingement and, thus, erosion-corrosion is hindered on the steel surface under a passive state.…”
Section: Understanding the Erosion-corrosion Behavior Of Steels Undermentioning
confidence: 99%
“…Various methods for the manufacture of magnetite electrodes have been reported in the literature: casting molten magnetite [15,16], sintering magnetite powder [17,18], sputtering deposition [19], etc. However, a simpler method was recently developed to electrodeposit a magnetite layer onto carbon steel and Ni-based alloy substrates [20][21][22][23], and was verified to be useful for making electrochemical electrodes [4][5][6][7][8][9].…”
Section: Preparation Of Working Electrodes For the Electrochemical Testsmentioning
confidence: 99%
“…It has been reported that a galvanic coupling with magnetite accelerates the corrosion of secondary system materials: carbon steel [4][5][6], alloy 600 [7] and alloy 690 [8,9] in various environments simulating the secondary conditions of SGs. Most of the tubes and heated crevices in operating SGs are covered with deposits or sludge.…”
Section: Introductionmentioning
confidence: 99%
“…Recently, many investigations on the galvanic effect by magnetite on the corrosion behavior of secondary coolant system materials such as nickel-based alloys [4][5][6] and carbon steel [7][8][9] have been reported. It is well known that the SG deposits mainly consist of magnetite and are porous in nature [10,11].…”
Section: Introductionmentioning
confidence: 99%
“…Hence, an electric contact between SG structural materials and magnetite deposits could be occurred. In various secondary environments, it was reported that the corrosion potential of magnetite was higher than those of secondary system materials and the corrosion rate of the SG materials was greatly increased due to the shift in their potentials to the anodic direction [4][5][6][7][8][9]. Through the galvanic effect of magnetite on the SG materials, the mechanism on the galvanic corrosion of the secondary system materials coupled to magnetite is well established.…”
Section: Introductionmentioning
confidence: 99%