The Interaction of Biofoulants and Calcareous Deposits on Corrosion Performance of Q235 in Seawater

Author:

Zhang JieORCID,Yu Zhenhua,Zhao Xia,Lan Xiao,Wang Jiangwei,Lv Xianzi,Zhang Chao,Duan Jizhou,Hou Baorong

Abstract

An understanding of the interaction of calcareous deposits and biofoulants on the corrosion performance of steel during the fouling stage is both interesting and necessary. So, the effects of these factors on Q235 carbon steel were investigated and discussed for 20 weeks under real ocean conditions. The results indicate that calcareous deposits are favorable for the attachment of marine microorganisms. However, macroorganisms prefer adhering directly to the substrate. The generations of calcareous deposits have priority over the biofilm attachment under the condition of cathodic protection. Calcareous deposits can prevent steel against corrosion for four weeks without cathodic protection.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

General Materials Science

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