利用原子力显微镜(AFM)、动电位扫描及润湿角测量等手段研究了盐酸溶液中十二胺在碳钢表面的吸附行为及其对碳钢腐蚀行为的影响.结果表明:十二胺在碳钢表面形成了单分子吸附层,其对碳钢的缓蚀机理主要为"几何覆盖效应",一个十二胺分子平均可以取代2.32个水分子;碳钢表面的润湿性随缓蚀剂浓度的增大而减弱.AFM电流图像显示,碳钢表面有十二胺吸附的部位导电性能明显减弱;AFM力-距离曲线表明,碳钢表面有缓蚀剂吸附的部位呈现出明显的黏附力.
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