A Synergistic Acceleration of Corrosion of Q235 Carbon Steel Between Magnetization and Extracellular Polymeric Substances
来源期刊：Acta Metallurgica Sinica2018年第5期
论文作者：Hong-Wei Liu Da-Ke Xu Bi-Juan Zheng Muhammad Asif Fu-Ping Xiong Guo-An Zhang Hong-Fang Liu
文章页码：456 - 464
摘 要：In this work, surface characterization and electrochemical measurement were employed to investigate the effects of magnetic field（MF） on the corrosion of Q235 carbon steel in a NaCl solution containing sulphate-reducing bacteria（SRB） or extracellular polymeric substances（EPS）. Results demonstrated that a 150 mT MF enhanced steel corrosion in a SRB-containing NaCl solution by 202% calculated from weight loss with pitting corrosion as the main corrosion type.Either EPS or MF rendered steel corrosion, but a synergistic interaction between MF and EPS boosted up steel corrosion.This synergistic enhancement could be referred to the alteration in orientation of EPS induced by MF. The presence of higher percentage of chloride ions on the carbon steel surface manifested that MF initiated the erosion of chloride ions on the carbon steel coupon.
Hong-Wei Liu1，Da-Ke Xu2，Bi-Juan Zheng1，Muhammad Asif1，Fu-Ping Xiong1，Guo-An Zhang1，Hong-Fang Liu1
1. Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology2. Institute of Metal Research, Chinese Academy of Sciences
摘 要：In this work, surface characterization and electrochemical measurement were employed to investigate the effects of magnetic field（MF） on the corrosion of Q235 carbon steel in a NaCl solution containing sulphate-reducing bacteria（SRB） or extracellular polymeric substances（EPS）. Results demonstrated that a 150 mT MF enhanced steel corrosion in a SRB-containing NaCl solution by 202% calculated from weight loss with pitting corrosion as the main corrosion type.Either EPS or MF rendered steel corrosion, but a synergistic interaction between MF and EPS boosted up steel corrosion.This synergistic enhancement could be referred to the alteration in orientation of EPS induced by MF. The presence of higher percentage of chloride ions on the carbon steel surface manifested that MF initiated the erosion of chloride ions on the carbon steel coupon.
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