冷却水中杀菌剂次氯酸钠、异噻唑啉酮对不锈钢的侵蚀性比较  

Corrosion Resistance of Sodium Hypochlorite and Isothiazolone Bactericides to Stainless Steel in Cooling Water

作　　者：刘蕊[1,2,3] 葛红花[1,2,3] 龚晓明[1,2,3] 孟新静[1,2,3] 赵玉增[1,2,3] 

机构地区：[1]上海电力学院能源与环境工程学院,上海200090 [2]上海电力学院上海热交换系统节能工程技术研究中心,上海200090 [3]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200090

出　　处：《材料保护》2011年第1期60-61,74,共3页Materials Protection

基　　金：上海市科学技术委员会项目(08DZ2201400;08DZ2210800;09DZ0500400)资助

摘　　要：冷却水对不锈钢有腐蚀作用,在冷却水中分别添加杀菌剂次氯酸钠和异噻唑啉酮,采用极化曲线研究了次氯酸钠和异噻唑啉酮对TP304L不锈钢电极耐蚀性能的影响。结果表明:冷却水中次氯酸钠可以促进不锈钢的点蚀,随放置时间的延长冷却水对不锈钢的侵蚀性增加;冷却水中加入异噻唑啉酮对不锈钢的极化曲线不产生影响,在放置过程中冷却水对不锈钢电极的侵蚀性也不发生变化,异噻唑啉酮是一种对不锈钢较为安全的杀菌剂。Bactericides of sodium hypochlorite and isothiazolone were introduced into cooling water.The influence of sodium hypochlorite and isothiazolone on the corrosion resistance of TP304L stainless steel in cooling water was studied by measuring polarization curves.It was found that the introduction of sodium hypochlorite into the cooling water accelerated pitting of the stainless steel,and the corrosiveness of the cooling water containing sodium hypochlorite was enhanced with extending time of storage.Adding isothiazolone into cooling water did not influence the polarization curves of stainless steel,and the corrosiveness of the cooling water containing isothiazolone to the stainless steel electrode retained unchanged,indicating that isothiazolone belonged to safe bactericides for stainless steel.

关 键 词：点蚀 次氯酸钠 异噻唑啉酮 不锈钢 冷却水 极化曲线 

分 类 号：TG172.5[金属学及工艺—金属表面处理]