吡咯烷二硫代氨基甲酸铵对黄铜在3%氯化钠溶液中的缓蚀性能  

Inhibition Performance of Ammonium Pyrrolidine Dithiocarbamate for Brass in 3 % NaCl Solution

作　　者：廖强强[1,2] 李伟[3] 岳忠文[1,2] 潘杰文[1,2] 杨伊黎[1,2] 李义久[4] 

机构地区：[1]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 [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]上海大学化工系,上海201800 [4]同济大学化学系,上海200092

出　　处：《材料保护》2010年第6期18-20,30,共4页Materials Protection

基　　金：国家自然科学基金(20577034);上海市重点学科建设项目(P1304);上海高校电力腐蚀控制与应用电化学重点实验室开放基金(09KLSU01);上海热交换系统节能工程技术研究中心开放基金(09SERC03);上海市科委项目资助课题(08DZ2210800)

摘　　要：目前,对吡咯烷二硫代氨基甲酸铵(APDTC)缓蚀性的研究不多,而有关其对黄铜在3%NaCl溶液中的缓蚀未见报道。采用失重、电化学方法考察了3%NaCl溶液中APDTC对黄铜的缓蚀性能。结果表明:APDTC对黄铜的缓蚀有一最佳浓度,刚开始随着APDTC浓度的增加,APDTC对铜的缓蚀作用不断增大,在6mg/L时缓蚀效率最大可达85%,随着浓度的进一步增加,缓蚀效果反而有所下降;APDTC对黄铜的缓蚀作用同时抑制了阳极反应过程和阴极反应过程。The inhibition performance of ammonium pyrrolidine dithiocar-bamate (APDTC) for brass in 3% NaCl solution was investigated by conducting weight-loss tests and electrochemical tests.It was found that the inhibition action of APDTC for brass was closely re-lated to concentration.The inhibition efficiency increased with in-creasing concentration of APDTC and reached the best of 85 % at a concentration of 6 mg/L.The inhibition efficiency decreased with further increase of concentration.In terms of the inhibition mechanism,the inhibition action of APDTC for brass was domina-ted by simultaneous inhibition of anodic and cathodic processes.

关 键 词：吡咯烷二硫代氨基甲酸铵 黄铜 缓蚀性能 电化学 

分 类 号：TG174.42[金属学及工艺—金属表面处理]