Corrosion Property of a New Repair-Free Steel Developed for Bottom Plate of Cargo Oil Tanks

Abstract:

In this work, a new steel with excellent corrosion resistance was developed for cargo oil tanks of crude oil tankers to substitute protective coatings. Its corrosion properties were investigated by immersion test, SEM and potentiodynamic polarization techniques. The results indicated average corrosion rate of the steel was 0.22 mm/year, which countered for ca. 1/5 of accepted criterion (C.R. 1 mm/year) for corrosion resistant steels. This was due to the formation of a thin (10-15 μm), homogeneous and compact corrosion product with high polarization resistance on the surface of the sample.

• Periodical: Advanced Materials Research (Volumes 690-693)
• Pages: 206-210
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.690-693.206
• Online since: May 2013
• Authors: Fei Long Sun, Xue Qun Cheng, Xiao Gang Li
• Keywords: Cargo Oil Tanks, Corrosion-Resistant Steel, Electrochemical, Pitting Corrosion, SEM

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