Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-31 Cooperative journals: 《腐蚀科学与防护技术》
Abstract： Salt solution immersion test was employed to examine the effect of four amounts of the coated antirust oil i.e. 0.4, 0.9, 1.2 and 1.7 g/m2 respectively on the corrosion performance of coldrolled steel. The results showed that after immersed in 5%NaCl solution for 4 h, the 1.7 g/m2 oilcoated steel exhibited the highest protective efficacy 52.13%, the 0.4 g/m2 oil-coated steel exhibited the lowest protective efficacy only 29.2%. After immersion for 20 h, only those coated with 1.2 and 1.7 g/m2 antirust oil can reach the B rusting grade. The data of EIS and Mott-Schottky tests for the same immersion time showed that the larger amount of the coated oil on the steel had, the smaller the charge transfer resistance and the bigger the carrier density are, which indicated a better corrosion resistance.
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