Effects of Magnetic Fields on Microbiologically Influenced Corrosion of 304 Stainless Steel

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• 作者：Bijuan Zheng ; Kejuan Li ; Hongfang Liu ; Tingyue Gu
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：January 8, 2014
• 年：2014
• 卷：53
• 期：1
• 页码：48-54
• 全文大小：500K
• ISSN：1520-5045

文摘

The effects of magnetic fields (MFs) on the corrosion of 304 stainless steel (SS304) caused by oil-field sulfate-reducing bacteria (SRB) were investigated. Experimental data showed that the MF lowered the population of planktonic SRB by almost 4 orders of magnitude and delayed the formation of SRB biofilms on the SS304 coupons. The mass losses and surface images of the coupons indicated that the application of an MF considerably reduced the pitting corrosion of SS304. EDX and XPS analyses of the coupon surfaces demonstrated that the main corrosion products without an MF and with 2 and 4 mT MFs were FeS, FeO, and Fe₂O₃, respectively. The application of MFs could be an environmentally friendly method for mitigating microbiologically influenced corrosion (MIC) on SS304.