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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical Behavior of 316L Stainless Steel in f/2 Culture Solutions Containing Chlorella Vulgaris
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Electrochemical Behavior of 316L Stainless Steel in f/2 Culture Solutions Containing Chlorella Vulgaris

机译：316L不锈钢在含小球藻的f / 2培养液中的电化学行为

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摘要

Microbiologically influenced corrosion is a serious problem for stainless steels in marine engineering.In this study, the attachment of a typical biofouling microalgae Chlorella vulgaris on the surface of316L stainless steel was determined by a light microscopy. Its influence on the electrochemicalbehavior of this material was also evaluated by electrochemical techniques, including open circuitpotential, electrochemical impedance spectroscopy and polarization curves. The results showed thatthis algal species could attach to the surface of 316L stainless steel without any extracellularpolymeric substance. This action was not sensitive for the surface roughness but was influenced by theenvironmental pH value. The adhesion density reached a maximum at pH 9 value. Electrochemicalresults showed that this algal species had a corrosion inhibit efficiency for 316L stainless steel during ashort period of immersion (14 d). This was mostly because of the oxygen produced by thephotosynthetic activity of planktonic algae. The sessile algae species couldn induce any influence onthe electrochemical behavior of 316L stainless steel. All these results provide a basic knowledge on theinfluence of microalgae on the corrosion of stainless steel. This is meaningful for interpretingmicrobiologically influenced corrosion in situ for further.
机译：受微生物影响的腐蚀对于海洋工程中的不锈钢来说是一个严重的问题。在这项研究中，通过光学显微镜确定了典型的生物污染微藻小球藻在316L不锈钢表面的附着。还通过电化学技术评估了它对这种材料的电化学行为的影响，包括开路电势，电化学阻抗谱和极化曲线。结果表明，该藻种可以附着在316L不锈钢表面，而没有任何胞外聚合物。该作用对表面粗糙度不敏感，但受环境pH值的影响。在pH 9值时，粘合密度达到最大值。电化学结果表明，该藻类在短时间（14 d）内对316L不锈钢具有腐蚀抑制效率。这主要是由于浮游藻类的光合作用所产生的氧气。无柄藻类物种不会对316L不锈钢的电化学行为产生任何影响。所有这些结果为微藻对不锈钢腐蚀的影响提供了基础知识。这对于进一步解释受微生物影响的腐蚀是有意义的。

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