DP-1型缓蚀剂抑制硫离子对304不锈钢的侵蚀作用  

THE EFFECT OF DP-1 INHIBITOR ON THE CORROSIVENESS OF SULFIDE TO TYPE 304 STAINLESS STEEL

作　　者：刘景[1] 包伯荣[1] 解群[2] 翟祥华[1] 葛红花[2] 

机构地区：[1]上海大学化学系,上海200436 [2]上海电力学院环境工程系

出　　处：《腐蚀与防护》2005年第6期231-233,共3页Corrosion & Protection

基　　金：上海市教委重点培育学科基金;上海市教委青年基金(030Q12);上海电力学院博士基金资助项目

摘　　要：利用极化曲线和MottSchottky图研究了DP1型缓蚀剂对含硫离子的模拟冷却水中不锈钢腐蚀的抑制作用。结果发现,硫离子降低了不锈钢的耐蚀性能;DP1型缓蚀剂的加入使不锈钢钝态电流密度和钝化膜载流子浓度随硫离子浓度的增加而增大的幅度大大降低,说明该缓蚀剂抑制了硫离子对不锈钢钝化膜的侵蚀作用。Effect of the DP-1 inhibitor on corrosion of stainless steel/sulfide system in simulated cooling water was investigated using polarization curves and Mott-Schottky plots. Analysis results of the determined values of passive current I_p and carrier densities N indicated that sulfide in the simulated cooling water degraded the anticorrosive performance of the stainless steel. After adding the inhibitor into this system, the values of I_p and N were reduced significantly, indicating that the presence of the inhibitor had assuredly inhibited the destruction of sulfide to the passive films.

关 键 词：缓蚀剂 极化曲线 Mott-Schottky图 硫离子 

分 类 号：TG174[金属学及工艺—金属表面处理]