磁化水对金属耐蚀性能的影响  

Effect of Magnetized Water on Corrosion Resistance of Metals

作　　者：宋飞[1,2] 葛红花[2] 范秀方 邓宇强[1] 刘锋[1] 倪瑞涛[1] 

机构地区：[1]西安热工研究院有限公司,西安710032 [2]上海电力学院,上海高校电力腐蚀控制与应用电化学重点实验室,上海热交换系统节能工程技术研究中心,上海200090 [3]华能日照电厂检修部,日照276826

出　　处：《腐蚀与防护》2015年第4期362-365,共4页Corrosion & Protection

基　　金：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

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。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.

关 键 词：磁化水 腐蚀 极化曲线 电化学阻抗谱 

分 类 号：TG174.1[金属学及工艺—金属表面处理]