物理化学学报2011，Vol.27Issue(3)：647-654,8.
3.5%NaCl饱和Ca(OH)2溶液中醇胺缩聚物对碳钢腐蚀的抑制
Corrosion Inhibition by Sorbitol/Diethylenetriamine Condensation Product for Carbon Steel in 3.5% NaCl Saturated Ca(OH)2 Solution
摘要
Abstract
The inhibitive action of a sorbitol/diethylenetriamine condensation (SDC) product toward carbon steel corrosion in saturated Ca(OH)2 solution containing 3.5％ NaCl was investigated using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), surface morphological observations, and quantum chemical calculations. The results indicate that the addition of SDC can effectively decrease the corrosion current densities of the carbon steel and increase the pitting corrosion potential suggesting that the local corrosion induced by CI- is strongly restricted by the inhibitor, which acts as a mixed type inhibitor. In the studied concentration range, the inhibition efficiency increased with an increase in inhibitor concentration. The overall inhibition behavior of SDC is attributed to the stabile adsorption film formd by the dominantly physical adsorption on the carbon steel surface according to the Langmuir adsorption isotherm.关键词
阻锈剂/钢筋防护/缓蚀效应/吸附行为分类
化学化工引用本文复制引用
周欣,杨怀玉,王福会..3.5%NaCl饱和Ca(OH)2溶液中醇胺缩聚物对碳钢腐蚀的抑制[J].物理化学学报,2011,27(3):647-654,8.基金项目
国家科技支撑计划(2007BAB27B03)资助项目 （2007BAB27B03）
