The inhibition effectiveness of Punica granatum ( also called Pomegranate) extract and the synergistic effect of potassium iodide (KI) against the degradation of mild steel in 1 M HCl was studied. Potentiodynamic polarization measurement (PDP) was used in order to investigate the performance of this compound. The presence of a mixture of iodide ions (KI) and inhibitor (PG) increased the degree of surface coverage. Also, the inhibition efficiency reaches 82% at 323 K when the concentration of P. granatum (PG) is 2 mg/L with 10 mM of KI. The synergistic effect between the inhibitor and KI could be explained by the reinforcement of the layer being adsorbed onto the steel surface. The adsorption of inhibitor onto the steel surface followed the Freundlich adsorption isotherm. Characterization techniques, such as scanning electronic microscopy coupled with energy dispersive X–ray spectroscopy (SEM/EDX), Raman, and ultra-violet-visible (UV-visible) spectroscopies, confirm the adsorption of inhibitor onto the surface morphology.

中文翻译：

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有助于理解石榴皮提取物和碘化钾作为S355钢缓蚀剂的协同作用

研究了石榴籽提取物的抑制作用，以及碘化钾（KI）对1 M HCl中低碳钢降解的协同作用。为了研究该化合物的性能，使用了电位动力学极化测量（PDP）。碘离子（KI）和抑制剂（PG）的混合物的存在增加了表面覆盖的程度。而且，当颗粒假单胞菌（PG）的浓度为2 mg / L，KI为10 mM时，在323 K时抑制效率达到82％。抑制剂和KI之间的协同作用可以通过增强吸附到钢表面的层来解释。抑制剂在钢表面的吸附遵循Freundlich吸附等温线。表征技术