Abstract
Corrosion of X80 steel induced by alternating current (AC) in acidic red soil (ARS), acidic red soil-extracted solution (SES), and acidic red soil-simulated solution (SSS) has been investigated. Corrosion of the steel coupons is dramatically aggravated by AC. The kinetic relationship between the corrosion rate (CR) and the AC density (JAC) in the three testing media all follows a model function, CR= αJAC + β. Grey relational analysis shows that the correlation coefficient between corrosion rates with JAC in SES and ARS is 0.614; however, the coefficient between those in SSS and ARS is only 0.484, which indicates that SES is more suitable for the evaluation of soil corrosion than SSS.
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