Early Corrosion Behavior of Pipeline Steel Containing 1% Cr in Sea Water Environment

Abstract:

The corrosion behavior of pipeline steel containing 1%Cr is studied by using immersion experiment. The corrosion rust is characteried with macroscopic/microscopic surface morphology, corrosion kinetics and corrosion phases. The results demonstrate that the main corrosion products are lepidocrocite and goethite, Cr-rich compound consists of the inner layer. The corrosion process could be divided into three stages. At stage 1, the corrosion rate decreases fast, and the distributed corrosion products are formed. At stage 2, the granular corrosion products appear on coupons surface gradually, and a plain corrosion rate is obtained. At stage 3, a compact and dense corrosion layer attaches to coupons surface, and corrosion rate decreases mildly.

• Periodical: Advanced Materials Research (Volumes 1120-1121)
• Pages: 773-778
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1120-1121.773
• Online since: July 2015
• Authors: Zhen Guang Liu, Xiu Hua Gao*, Lin Xiu Du, Jian Ping Li, Ping Ju Hao
• Keywords: Corrosion, Pipeline Steel, Sea Water

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