Abstract
Potential’s fluctuation of rust preventing oil film during its degradation was studied using wire beam electrode. Being non-destructive and simple, potential measurement is a very repetitive method. Other electrochemical testing method, e.g., polarization resistance, can breakdown the integrity of oil coating by DC current; EIS is time consuming. As a special electrochemical sensor, wire beam electrode contains 101 wires of mild steel wires, and it is helpful to improve the reproducibility of electrochemical test evidently. Using this electrode, the electrochemical parameters and their distribution which was related to underfilm corrosion process are measured directly so as to describe potential’s fluctuation of rust preventing oil film. It is pointed out that there is potential’s fluctuation on rust preventing oil film during its degradation, and this characteristic has direct effect on the self-repairing ability of rust preventing oil film. However, for the uncoated metal electrode and base oil film, there is no such behavior. It is also pointed out that inhibitors in the oil film have direct effect on its self-repairing ability.
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Project supported by the Natural Science Foundation of Hunan Province
Synopsis of the first author Jiang Hangying, professor, born on July 4, 1928, majoring in Metallurgical Physicochemistry and Electrochemistry, have published about 100 papers.
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Jiang, H., Zhong, Q. & Shu, Y. Potential’s fluctuation of rust preventing oil film during its degradation. J Cent. South Univ. Technol. 4, 9–12 (1997). https://doi.org/10.1007/s11771-997-0020-5
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DOI: https://doi.org/10.1007/s11771-997-0020-5