New sandwich type materials based on MnTa2O6 and porphyrins mono- and tetra-substituted with –COOH groups, namely: (tetrakis-(4-carboxy-phenyl)-porphyrin and 5-(4-carboxy-phenyl)-10,15,20-tris-phenyl-porphyrin) have been synthesized and studied to assess the importance of its corrosion inhibition ability on with regard to its of steel the number of –COOH anchors. Morphological investigations on thin films have been carried out by atomic force microscopy. The inhibition of corrosion has been evaluated by open circuit potential measurements and potentiodynamic polarization technique with Tafel representation, after drop-casting deposition onto carbon steel in 0.1M HCl media. The inhibition efficiency of the novel sandwich-type materials based on pseudo-binary oxide MnTa2O6 and tetrakis-(4-carboxy-phenyl)-porphyrin or 5-(4-carboxy-phenyl)-10,15,20-tris-phenyl-porphyrin is in the range 76-86% for tetra substituted porphyrin and 84-95% for the mono-COOH substituted porphyrin.

中文翻译：

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MnTa2O6与卟啉的结构复合材料：卟啉上接枝的羧基数量对抑制钢腐蚀能力的影响

基于MnTa2O6和被-COOH基团单取代和四取代的卟啉的新型夹层型材料，即：(四-(4-羧基-苯基)-卟啉和5-(4-羧基-苯基)-10,15,20) -三苯基卟啉）已被合成和研究，以评估其缓蚀能力对钢的-COOH锚数量的重要性。已经通过原子力显微镜对薄膜进行了形态学研究。在 0.1M HCl 介质中滴铸沉积到碳钢上后，通过开路电位测量和具有 Tafel 表示的动电位极化技术评估了腐蚀的抑制作用。基于假二元氧化物MnTa2O6和四-(4-羧基-苯基)-卟啉或5-(4-羧基-苯基)-10,15的新型夹层型材料的抑制效率，