Corrosion Behaviour Of X65 Carbon Steel Under The Intermittent Oil/Water Wetting: A Synergic Effect Of Flow Velocity And Alternate Immersion Period

CORROSION SCIENCE(2021)

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摘要
The effect of flow on corrosion behaviour of carbon steel under intermittent oil/water wetting was investigated by a newly-modified "alternate wetting cell", combining with the use of potentiostatic polarisation, in-situ visualisation, contact angle measurements and scanning electron microscopy (SEM). The oil/water wetting time was determined by the formation of a thin oil/water film on the electrode surface after the transition of immersion state. A short alternate oil/water immersion period and low flow velocity can increase the ratio (oil to water wetting time) and efficiently mitigate the corrosion, proposing a logistic regression tendency between corrosion mitigation efficiency and oil/water wetting time.
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关键词
Carbon steel, CO2 corrosion, Current-time curve, Wetting hysteresis
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