Comparison of influences of NaCl and CaCl2 on the corrosion of 11% and 17% Cr ferritic stainless steels during cyclic corrosion test

Beom, Won-Jin; Yun, Kwi-Sub; Park, Chan‐Jin; Ryu, Han-Jin; Kim, Young‐Ho

doi:10.1016/j.corsci.2009.10.033

Cited by 26 publications

(7 citation statements)

References 19 publications

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“…Therefore, new pit initiation was always observed when RH changed from 85% to 33% since the breakdown potential is more easily reached in concentrated solutions. Beom [15] observed that the current was greatest during the drying stage from 90% RH and 50 ºC to 30% RH and 60 ºC in a study of stainless steel 409 and stainless steel 439 under CaCl 2 electrolyte layers, although it couldn't be determined whether the increase in current was caused by pit growth or new pit initiation. Tsutsumi [34] also reported pit initiation of 304 under MgCl 2 solutions when RH changed from 95% to 25%.…”

Section: Corrosion Behaviour Under "Wet-wetter-wet Cycles" (33% + 85%mentioning

confidence: 99%

“…However, research on atmospheric pitting corrosion of stainless steel has generally focused on constant conditions of RH [2] [9,11] [12] [10] [13]. Studies on the effect of RH variations have been limited to corrosion current or potential monitoring [7,[14][15][16][17][18] [19]. However, the current or potential response only gives the overall corrosion behaviour of the sample tested.…”

Section: Introductionmentioning

confidence: 99%

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The effect of relative humidity change on atmospheric pitting corrosion of stainless steel 304L

et al. 2019

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Section: Corrosion Behaviour Under "Wet-wetter-wet Cycles" (33% + 85%mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of relative humidity change on atmospheric pitting corrosion of stainless steel 304L

et al. 2019

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“…In SCR technology, urea is used as a source of ammonia to reduce the amount of NOx exhaust gases in automotive systems. The corrosion mechanism in urea-related technology was explained in several ways; one such way was cyclic oxidation caused by thermal cycling [7], and another-external corrosion by road salts [8,9]. Additionally, the effect of acidic condensate with chlorides and active carbon at low temperatures was mentioned [2,10,11].…”

Section: Introductionmentioning

confidence: 99%

Corrosion of Stainless Steel by Urea at High Temperature

Galakhova

Kadisch²,

Mori³

et al. 2021

CMD

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The corrosion mechanism of stainless steel caused by high temperature decomposition of aqueous urea solution has been investigated. The relationship between aqueous urea solution, its thermal decomposition products and the corrosion mechanism of stainless steel is studied by FTIR spectroscopy, SEM and stereo microscopy. The corroded steel samples, together with deposits, were obtained from the injection of aqueous urea solution on the steel plate at high temperatures. Uniform corrosion underneath the deposits was proposed as the main driver for corrosion of the steel samples. At the crevices, corrosion due to the used geometry and due to high temperature cycling could play an acceleration role as well.

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“…Therefore, in this study, the effect of pre-rusting by two different chloride-ion-containing solutions on the corrosion of rebar in cement mortar was examined by electrochemical measurement and microscope image analysis. In this study, the effect of a pre-rusted rebar on corrosion in a cement composite was investigated using two pre-rusting agents: CaCl 2 , a common deicing agent [25], and an HCl solution based on a previous study [16].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Pre-Rusted Rebars in Cement Mortar Exposed to Harsh Environments

et al. 2020

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Rebar embedded inside reinforced concrete structures becomes corroded due to various factors. However, few studies have focused on the corrosion of pre-rusted rebar embedded in cement composites, and the findings reported thus far are inconsistent. Therefore, in this study, an experimental program was undertaken to examine the effect of pre-rusting on the further corrosion of reinforcements in cement composites. Pre-rust was induced using two different solutions (CaCl2 and HCl). The corrosion rate in the cement composite was analyzed using the half-cell potential and polarization resistance methods. In addition, scanning electron microscopy with energy-dispersive X-ray analysis and X-ray diffraction analysis were used to examine the morphology of the rust. The results show that the corrosion rate of the rebar embedded in the cement composite can be increased by more than 3.8 times depending on the pre-rust conditions (RE: 0.0009 mm/year, HCl: 0.0035 mm/year). In addition, we found that the corrosion products in the pre-rusted layer were comparable to those of the rebar corroded in the marine atmosphere.

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Comparison of influences of NaCl and CaCl2 on the corrosion of 11% and 17% Cr ferritic stainless steels during cyclic corrosion test

Cited by 26 publications

References 19 publications

The effect of relative humidity change on atmospheric pitting corrosion of stainless steel 304L

The effect of relative humidity change on atmospheric pitting corrosion of stainless steel 304L

Corrosion of Stainless Steel by Urea at High Temperature

Corrosion Behavior of Pre-Rusted Rebars in Cement Mortar Exposed to Harsh Environments

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