A novel high throughput electrochemistry corrosion test method: Bipolar electrochemistry

Zhou, Yiqi; Mahmood, Sultan; Engelberg, Dirk

doi:10.1016/j.coelec.2023.101263

Cited by 10 publications

(2 citation statements)

References 56 publications

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“…Here, the pit propagation is strongly related to the geometry of ferrite and austenite, it was reported that suitable design of size/ ratio of ferrite and austenite increases the pitting propagation resistance, the pitting growth kinetics in LDSS 2101 can be even lower than DSS 2205. [33] In conventional corrosion testing methodologies, the detection of pitting corrosion on HDSS 2707 at room temperature is not possible. The use of bipolar electrochemistry induces the nucleation of pitting corrosion at room temperature, and pitting potential on the BPE is time dependent, same as traditional potentiodynamic polarisation test.…”

Section: Application Of a Modified Bipolar Electrochemistry Set-upmentioning

confidence: 99%

“…This technique allows for the assessment and characterisation of various types of corrosion, such as crevice corrosion, pitting corrosion and selective phase corrosion, by subjecting the bipolar electrode to a wide range of applied potentials. [11][12][13] Recently, researchers have started using bipolar electrochemistry to evaluate the pitting corrosion performance of DSS 2205 at room temperature. [14][15][16] In contrast, the critical pitting parameter can be measured on DSS and SDSS at room temperature only if they contain harmful tertiary phases or precipitates (χ, σ, Cr-nitrides).…”

Section: Introductionmentioning

confidence: 99%

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A rapid corrosion screening technique for grade 2707 hyper‐duplex stainless steel at ambient temperature

Zhou,

Cao,

Mahmood

et al. 2023

Materials & Corrosion

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The pitting corrosion behaviour of 27%Cr–7%Ni (2707) hyper‐duplex stainless steel (HDSS) at ambient temperature has been assessed using a novel bipolar electrochemistry test set‐up. Application of this technique generates a linear potential gradient at the surface of the HDSS 2707 test piece, which allows assessment of the pitting corrosion behaviour at ambient temperature. Pit nucleation and associated growth kinetics can be obtained and characterised. To assess pitting corrosion in high‐alloyed HDSS, the normal bipolar test method had to be modified by superimposing an auxiliary potential. This new test set‐up was demonstrated by characterising the nucleation of pits and associated pit growth kinetics. The latter occurred either at austenite/ferrite interphase or inside ferrite phase, with pit growth within the ferrite phase in the HCl environment.

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Section: Application Of a Modified Bipolar Electrochemistry Set-upmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A rapid corrosion screening technique for grade 2707 hyper‐duplex stainless steel at ambient temperature

Zhou,

Cao,

Mahmood

et al. 2023

Materials & Corrosion

Self Cite

View full text Add to dashboard Cite

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Development of a two‐dimensional bipolar electrochemistry technique for high throughput corrosion screening

Zhou,

Engelberg

2024

Materials Genome Engineering Advances

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Bipolar electrochemistry allows testing and analysing the crevice corrosion, pitting corrosion, passivation, general corrosion, and cathodic deposition reactions on one sample after a single experiment. A novel two‐dimensional bipolar electrochemistry setup is designed using two orthogonal feeder electrode arrangements, allowing corrosion screening tests across a far wider potential range with a smooth potential gradient to be assessed. This two‐dimensional bipolar electrochemistry setup was applied here to simultaneously measure for the simultaneous measurement of the nucleation and propagation of pitting and crevice corrosion under a broad range of applied potential on type 420 stainless steel, which has a very short localised corrosion induction time. It reduces the error from corrosion induction to corrosion competition, and all pits and crevice corrosion have no lacy cover. Results show crevice corrosion can gain current density and easier to support its nucleation and propagation at different potential regions more easily than pitting corrosion.

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A review on bipolar electrochemistry for corrosion testing: highlighting mechanisms, applications, and future prospects

Shrivastava,

Maurya,

Katiyar

2024

J Solid State Electrochem

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A novel high throughput electrochemistry corrosion test method: Bipolar electrochemistry

Cited by 10 publications

References 56 publications

A rapid corrosion screening technique for grade 2707 hyper‐duplex stainless steel at ambient temperature

A rapid corrosion screening technique for grade 2707 hyper‐duplex stainless steel at ambient temperature

Development of a two‐dimensional bipolar electrochemistry technique for high throughput corrosion screening

A review on bipolar electrochemistry for corrosion testing: highlighting mechanisms, applications, and future prospects

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