Inhibition effect of thioureidoimidazoline inhibitor for the flow accelerated corrosion of an elbow
Inhibition effect of thioureidoimidazoline inhibitor for the flow accelerated corrosion of an elbow
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DOI：
10.1016/j.corsci.2014.10.011
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发表时间：
2015
影响因子：
8.3
通讯作者：
L. Zeng;G. Zhang;X. Guo;C. Chai
中科院分区：
文献类型：
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作者：
L. Zeng;G. Zhang;X. Guo;C. Chai
采用阵列电极和计算流体力学（CFD）模拟方法研究了硫脲咪唑啉缓蚀剂（TAI）对X65碳钢弯头不同部位流动加速腐蚀（FAC）的缓蚀效果。TAI对阳极过程有明显的抑制作用，表明它是一种阳极型缓蚀剂。弯管内壁处的缓蚀效率低于外壁处，这与手肘内壁处较高的流速、剪切应力和湍动能有关。缓蚀效率的分布与流体力学参数的分布具有较好的一致性。
Inhibition effect of thioureidoimidazoline inhibitor (TAI) for the flow accelerated corrosion (FAC) at different locations of X65 carbon steel elbow was studied by array electrode and computational fluid dynamics (CFD) simulation. It is demonstrated that TAI is an anodic type inhibitor by remarkably inhibiting the anodic process. The inhibition efficiency at the inner wall is lower than that at the outer wall, which is associated with higher flow velocity, shear stress and turbulent kinetic energy at the inner wall of the elbow. The distribution of inhibition efficiency is in good accordance with the distribution of hydrodynamic parameters.