THE POTENTIAL FLUCTUATION OF RUST PREVENTING OIL FILM DURING ITS DEGRADATION

J Chin Soc Corr Pro

1997, Vol. 17

Issue (4): 281-285 DOI:

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THE POTENTIAL FLUCTUATION OF RUST PREVENTING OIL FILM DURING ITS DEGRADATION

ZHONG Qingdong SHU Yude JIANG Hanying (Central-South University of Technology)

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Abstract As a natural extension of our previous work, the novel wire beam electrode was used to study potential fluctuation of rust preventing oil film during its degradation. As a special electrochemical sensor, it remarkably improved the reproducibility of electrochemical tests. The error of electrochemical test may reduce to less than 5%. As a non-destructive and simple method, potential measurement had some advantages over other electrochemical testing methods. For example, polarization resistance measurement could breakdown the integrity of oil coating by DC current and EIS was time consuming. The electrochemical parameter and its category related to underfilm corrosion process could be measured directly using wire beam electrode. Potential fluctuation occurred on rust preventing oil film during its degradation, and the oil film had self-repairing ability. However, for the unoiled metal electrode and the electrode with base oil film, no such behavior was observed. Inhibitors in the oil film had direct effect on the self-repairing ability.

Key words: Rust preventing oil Electrochemical measurement Wire beam electrode Potential fluctuation

Received: 25 August 1997

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ZHONG Qingdong SHU Yude JIANG Hanying (Central-South University of Technology). THE POTENTIAL FLUCTUATION OF RUST PREVENTING OIL FILM DURING ITS DEGRADATION. J Chin Soc Corr Pro, 1997, 17(4): 281-285.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1997/V17/I4/281

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