低碳钢在富含H_2S乙醇胺溶液中的腐蚀及缓蚀剂抑制  

THE CORROSION AND INHIBITION OF MILD STEELIN MONOETHANOLAMINE SOLUTION ABOUNDED WITH H_2S

作　　者：周欣[1,2] 杨怀玉[1] 蔡铎昌[3] 沈长斌[1,4] 陶晓杰[1] 韩冬云[1] 

机构地区：[1]中国科学院金属研究所金属腐蚀与防护国家重点实验室 [2]西华师范大学化学系南充637002 [3]西华师范大学化学系 [4]大连铁道学院材料科学与工程系大连116028

出　　处：《中国腐蚀与防护学报》2005年第2期79-83,共5页Journal of Chinese Society For Corrosion and Protection

摘　　要：利用失重、腐蚀电化学方法和表面分析技术研究了碳钢在富含H2 S的乙醇胺(MEA)溶液中的腐蚀行为,以及添加缓蚀剂后对其电化学行为的影响.讨论了IMC -C5缓蚀剂对该体系的缓蚀作用机理.结果表明,脱硫系统中吸收了硫化氢的乙醇胺溶液对碳钢的腐蚀十分严重,IMC -C5缓蚀剂能有效控制碳钢在该体系中的腐蚀,其缓蚀作用主要来自于吸附缓蚀剂分子对腐蚀阳极过程的抑制。The corrosion behavior and the effect of the corrosion inhibitor on those behavior of carbon steel in MEA solution abounded with H 2S was investigated by static weight loss test,electrochemical method and surface analytical techniques.The inhibitive mechanisms of IMC-C5 inhibitor under the circumstance were discussed.The results show that mild steel was severely damaged in MEA solution abounded with H 2S and IMC-C5 inhibitor has an excellent inhibitive performance mainly from the strong retardation to the anodic process.The corrosion inhibitor is an anodic adsorption type inhibitor.

关 键 词：乙醇胺 缓蚀剂 缓蚀机理 低碳钢 

分 类 号：TG174.42[金属学及工艺—金属表面处理]