模拟循环冷却水中几种离子对碳钢腐蚀的影响  

The Influence of Several Important Ions in Circulating Cooling Water on Corrosion of Carbon Steel

作　　者：安洋[1] 徐强[1] 吴子涛[1] 任志峰 

机构地区：[1]天津大学化工学院,天津300072 [2]北京燕山石化研究院,北京102500

出　　处：《电镀与精饰》2011年第4期35-39,共5页Plating & Finishing

摘　　要：采用极化曲线和交流阻抗方法研究了模拟循环冷却水中的氯离子、硫酸根离子、碳酸氢根离子及钙离子等对碳钢腐蚀的影响。实验结果表明,氯离子对于碳钢腐蚀具有明显的促进作用,在含有氯离子的溶液中加入硫酸根离子、碳酸氢根离子或钙离子时,碳钢腐蚀加剧。而在含氯离子和碳酸氢根离子的溶液中加入钙离子时分为两种情况,当钙离子质量浓度较低时,钙离子的加入促进碳钢的腐蚀,当钙离子质量浓度较高时,则对碳钢的腐蚀具有一定的抑制作用。This paper is about the research on influence of several ions such as Cl-,SO2-4,HCO-3 and Ca2＋ in circulating cooling water on the corrosion of carbon steel by polarization curves method and AC impedance method.The results showed that Cl-could promote carbon steel corrosion obviously;SO42-,HCO-3 and Ca2＋ could make the corrosion more severe in Cl-containing solution.There were two results in Cl-and HCO-3 containing solution： addition of lower concentration Ca2＋ could promote the corrosion while addition of higher concentration Ca2＋ could inhibit the corrosion.

关 键 词：腐蚀 碳钢 循环冷却水 极化曲线 交流阻抗 

分 类 号：TG174.4[金属学及工艺—金属表面处理]