润滑科技信息平台

Pitting corrosion behavior and mechanism of 316 L stainless steel induced by marine fungal extracellular polymeric substances

出版日期: 2023-09-01

DOI: https://doi.org/10.1016/j.corsci.2023.111485

作者: Haixian Liu; Jiaqi He; Zhengyu Jin; Hongwei Liu;

In this study, effect of extracellular polymeric substances (EPS) secreted by fungus Aspergillus terreus on the pitting corrosion of 316 L stainless steels (SS) was deeply investigated by electrochemical measurements and surface analysis. Results demonstrated that adsorption of EPS can change surface wettability of 316 L SS leading to a much more hydrophilic steel–water interface. EPS not only accelerates uniform corrosion but enhances pitting corrosion of 316 L SS. EPS can promote the formation of metastable pitting corrosion and the subsequent growth of corrosion pits. The density of corrosion pits (>2 μm) reach (5.6 ± 0.5)×103 pits/cm2 when EPS is 400 mg/L.

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Preparation and Tribological Behavior of N-doped Graphene Oxide Quantum Dots with MoS2 and Al2O3 Nanocomposites as Lubricant Additive in Aqueous Glycerol

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Pub Date: 2023-09-01 DOI: https://doi.org/10.1016/j.corsci.2023.111485

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