磁化水对金属耐蚀性能的影响
Effect of Magnetized Water on Corrosion Resistance of Metals
摘 要
水的磁化处理在工业水处理中的应用日益广泛，但磁化水对不同金属耐蚀性能的影响不同。采用极化曲线和电化学阻抗谱研究了300 ℃条件下模拟锅炉水(pH=9.0)中磁化处理对20G钢及316L不锈钢耐蚀性能的影响。结果表明，模拟锅炉水经磁化处理可提高20G钢的阻抗值，降低其腐蚀电流密度；而对316L不锈钢，溶液经磁化处理使不锈钢电极的阻抗值减小，钝态电流密度增大。说明模拟锅炉水经磁化处理可以提高20G钢的耐蚀性能，但却降低了316L不锈钢的耐蚀性。
腐蚀
极化曲线
电化学阻抗谱
magnetized water
corrosion
polarization curve
electrochemical impedance spectroscopy
Abstract
Magnetic treatment water is widely used in the industrial water treatment, but it has different effects on the corrosion resistance of magnetized water for different metals. The corrosion resistance of 20G carbon steel and 316L stainless steel was studied respectively under the condition of simulated boiler water with and without magnetization (pH = 9.0) at 300 ℃ by polarization curves and electrochemical impedance spectroscopy. The results showed that the magnetization of simulated boiler water could increase the resistance value and reduce the corrosion current density of 20G carbon steel, while the impedance value reduced and the current density increased of the 316L stainless steel electrodes in the magnetizated simulated boiler water. The results showed that the simulated boiler water treated by magneticzation could improve the corrosion resistance of 20G carbon steel, but reduces the corrosion resistance of 316L stainless steel.
中图分类号 TG174.1
所属栏目 试验研究
基金项目 上海市重点科技攻关项目(08DZ2201400, 10DZ2252400, 11DZ2210500)；上海市教委科创重点项目(12ZZ173)；上海市2010联盟计划
收稿日期 2014/6/10
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备注宋飞(1982-)，工程师，硕士，从事工业水处理及金属腐蚀与防护工作，
引用该论文: SONG Fei,GE Hong-hua,FAN Xiu-fang,DENG Yu-qiang,LIU Feng,NI Rui-tao. Effect of Magnetized Water on Corrosion Resistance of Metals[J]. Corrosion & Protection, 2015, 36(4): 362
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