Correlation between repassivation kinetics and corrosion rate over a passive surface in flowing slurry

Lu, B.T.; Luo, Jing‐Li; Mohammadi, Farzad; Wang, K.; Wan, Xuemei

doi:10.1016/j.electacta.2008.02.083

Cited by 50 publications

(22 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, erosion is a mechanical wear process which can physically separate the metal atoms from the steel substrate [11][12][13][14]. The metal loss induced by the coupled effect of erosion and corrosion can sometimes be dramatically higher than the sum of the metal loss caused by individual pure erosion and pure corrosion on a finely polished steel surface [10][11][12][13][14][15][16][17][18][19]. Therefore, various studies were conducted in past decades trying to figure out the interaction and synergy between erosion and corrosion.…”

Section: Introductionmentioning

confidence: 99%

“…Metals 2020, 10,180 2 of 32 between erosion and corrosion, widely used in previous studies and standards [10,14,15,20,21] is given below.…”

Section: Introductionmentioning

confidence: 99%

“…Erosion-corrosion tests conducted in corrosive slurries are mainly focused on the synergy of erosion and corrosion which are to work simultaneously [10]. The mechanism of the synergy between erosion and corrosion in the corrosive slurry can be further divided into two cases, i.e., the steel under active corrosion and the steel having a protective film such as an inhibitor film, corrosion product film, or passive film due to different steel properties and test environments [9,10,15,21,38,42,43]. Consequently, it needs a detailed classification and introduction of these erosion-corrosion patterns to comprehend the research advances of erosion-corrosion.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An Overview of Major Experimental Methods and Apparatus for Measuring and Investigating Erosion-Corrosion of Ferrous-Based Steels

Liu

Zhou

Wang

et al. 2020

Metals

View full text Add to dashboard Cite

This paper firstly provides an overview of major efforts made over the past several decades on developing the test apparatus for the study of erosion-corrosion of ferrous-based steels. The merits and the application range of the set-ups, i.e., rotating disc/cylinder electrode system, slurry jet impingement rig, and test flow loop, are introduced. Secondly, the advantages and limitations of both non-electrochemical and electrochemical methods used for the measurement of erosion-corrosion are presented. Thereafter, the interaction between erosion and corrosion using a cyclic erosion-corrosion method was introduced. The synergy between erosion and corrosion for the steels under the passive state were analyzed on the basis of the breakdown and restoration of the passive film. In addition, the difference between the obtained erosion-enhanced corrosion and the corrosion-enhanced erosion using different experimental methods for steels under active corrosion was discussed. Finally, the interaction between the localized corrosion and erosion was studied through the dynamic change of the local current distribution revealed by the wire beam electrode.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Metals 2020, 10,180 2 of 32 between erosion and corrosion, widely used in previous studies and standards [10,14,15,20,21] is given below.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Overview of Major Experimental Methods and Apparatus for Measuring and Investigating Erosion-Corrosion of Ferrous-Based Steels

Liu

Zhou

Wang

et al. 2020

Metals

View full text Add to dashboard Cite

show abstract

“…Unlike in the previous research, 7,8,11,12 experimental particles were collected with a rectangle box after the particles impacted the sample surface. This could ensure that most particles impacted the specimen only once in each particle injection and that we could control the specific particle impact time.…”

Section: Experimental Partmentioning

confidence: 99%

“…5 Some researchers defined the repassivation kinetics, which was determined with the anodic-current density, to indicate the growth of passive films. 6 The repassivation kinetics was measured with several experimental methods such as the particle-impact test, 7,8 fracture test, 9 slower electrode straining 10 and scratching test. 11 The common difficulties in these measurement processes were the control of the film rupture and the monitoring of the repassivation.…”

Section: Introductionmentioning

confidence: 99%

Effect of particle impingement on electrochemical properties of stainless steel in a jet flow

Cheng¹,

Zhang²,

Dou³

et al. 2018

Mater. Tehnol.

View full text Add to dashboard Cite

The objective of this research was to discuss the effects of physical impingement on the corrosion resistance of super 13Cr stainless steel in a solid-liquid jet flow. Data from standard laboratory tests including open-circuit potential (OCP), polarization potential, current and surface morphology was obtained. In addition, the passivation process at a changing flow velocity and after particle impacts were discussed using a point-defect model (PDM). The experimental results showed that particle impacts affect not only the electrochemical parameters but also the apparent structure of a sample, thus weakening the surface corrosion resistance of stainless steel. An uninterrupted particle impact damages loose passive films, decreases the electric potential and increases the current density. When the change in the potential reaches a stable state, the metal potential is gradually increased due to the influence of passivation; the passivation rate is the most significant at the beginning of the passivation and at a low flow velocity. Keywords: solid-liquid two-phase flow, electrochemical property, passive film, repassivation Predmet raziskave je bil raziskati vplive fizikalnih trkov na odpornost proti koroziji super nerjavnega jekla 13 Cr v toku me{a-nice kapljevine in trdne faze. Avtorji so podatke zbrali s pomo~jo standardnih laboratorijskih testov, kot so: potencial v odprtem tokokrogu (OCP; angl.: open-circuit potential), povr{inska morfologija, polarizacijski potencial in tok. Dodatno so uporabili model to~kovnih napak (PDM; angl.: Point Defect Model) za razlago procesa pasivacije v spreminjajo~ih se pogojih hitrosti pretoka medija po trkanju delcev na povr{ino vzorca. Rezultati preizkusov so pokazali, da trki delcev ne vplivajo samo na elektrokemi~ne procese temve~tudi na navidezno strukturo vzorca in s tem se slabi protikorozijska odpornost nerjavnega jekla. Neprekinjeno mesebojno trkanje (udarjanje oz. zadevanje) delcev po{koduje pasivni film in tako zmanj{a elektri~ni potencial ter pove~a gostoto toka. Ko sprememba potenciala dose`e neko stabilno vrednost, potencial kovine postopno naraste zaradi vpliva pasivacije in hitrost pasivacije je najbolj pomemben faktor na za~etku pasivacije pri majhni hitrosti pretoka. Klju~ne besede: dvofazni tok kapljevina-trdno, elektrokemijske lastnosti, pasivni film, repasivacija

show abstract

Electrochemical Noise: A Powerful General Tool

Gabrielli

Williams

2014

Developments in Electrochemistry

View full text Add to dashboard Cite

Correlation between repassivation kinetics and corrosion rate over a passive surface in flowing slurry

Cited by 50 publications

References 32 publications

An Overview of Major Experimental Methods and Apparatus for Measuring and Investigating Erosion-Corrosion of Ferrous-Based Steels

An Overview of Major Experimental Methods and Apparatus for Measuring and Investigating Erosion-Corrosion of Ferrous-Based Steels

Effect of particle impingement on electrochemical properties of stainless steel in a jet flow

Electrochemical Noise: A Powerful General Tool

Contact Info

Product

Resources

About