INHIBITION EFFECT OF DODECYLAMINE ON CARBON STEEL CORROSION IN HYDROCHLORIC ACID SOLUTION
INHIBITION EFFECT OF DODECYLAMINE ON CARBON STEEL CORROSION IN HYDROCHLORIC ACID SOLUTION
复制标题
十二胺在盐酸溶液中对碳钢的缓蚀作用
DOI：
10.1142/s0218625x12500606
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发表时间：
2012-12-01
影响因子：
1.1
通讯作者：
Guo, Xingpeng
中科院分区：
文献类型：
--
作者：
Chen, Zhenyu;Huang, Ling;Guo, Xingpeng
在盐酸溶液中，十二胺通过其极性基团（-NH 2）自发吸附在碳钢表面。此外，它在碳钢表面形成单层膜。十二胺对碳钢的缓蚀机理为几何堵塞效应。十二胺在碳钢表面的吸附符合Arrhenius方程。吸附使活化能略有增加，但使指前因子值大大降低。原子力显微镜力曲线表明，在没有吸附十二胺的区域，没有明显的粘附力发生。然而，在吸附十二胺的区域，观察到平均1.3nN的粘附力。
Dodecylamine spontaneously adsorbs on carbon steel via its polar group (-NH2) in hydrochloric acid solution. Furthermore, it forms a monolayer film on carbon steel surface. The inhibition mechanism of dodecylamine for carbon steel is geometric blocking effect. The adsorption of dodecylamine on carbon steel surface follows Arrhenius equation. The adsorption slightly increases activated energy, but greatly reduces pre-exponential factor value. Atomic force microscopy force curves indicate that at the area without adsorbed dodecylamine, no obvious adhere force occurs. At the area with adsorbed dodecylamine, however, an average 1.3 nN adhere force is observed.