Polypyrrole Film Doped with Corrosion-Inhibitors Electropolymerized on AA 1100

Abstract

Polypyrrole films doped with dodecylbenzenesulfonate (PPy/DBS) and with oxy-anions tungstate (PPy/DBS/TUN) and vanadate (PPy/DBS/VAN) were potentiostatically electropolymerized on aluminum alloy 1100 (AA1100). The corrosion protection of these films was evaluated by the variation of the corrosion potential (E CORR) with the immersion time and by electrochemical impedance spectroscopy (EIS) measurements in 0.05 mol L-1 NaCl and 0.05 mol L-1 HCl solutions. The EIS measurements suggest that the tungstate and the vanadate play the role of a dopant and an inhibitor. The results presented here show that PPy/DBS/TUN and PPy/DBS/VANprovide a protective effect against the corrosion of the AA1100. It was shown that the oxyanions' inhibitory action is different depending on the electrolyte pH. In an HCl solution PPy/DBS/TUN films improve protection against aluminum alloy's corrosion. On the other hand, in a NaCl solution, PPy/DBS/VAN films and PPy/DBS/TUN films act as inhibitor, the former being more effective.

POLYPYRROLE DEPOSITION ON THE SURFACE OF Al87Ni8Y5 AMORPFOUS ALLOYS IN POTENTIODYNAMIC MODE

“…Плівки ППі, осаджені на різні субстрати, можуть бути використані для конструювання хемо- [13][14][15] та біосенсорів [4,5], суперконденсаторів [16,17], мікроприводів (штучних м'язів) [18][19][20], електрокаталізаторів [21,22], активних компонентів захисних антикорозійних покрить металів і сплавів [23][24][25][26][27], адсорбентів іонів важких металів [28][29][30], і зокрема йонів Cr(VI) [31][32][33][34][35], а також барвників зі стічних вод різних виробництв [6,[36][37][38] та багато інших застосувань.…”

Synergistic Inhibitory Effect of Potassium Sodium Tartrate Tetrahydrate and Sodium Stannate Trihydrate on Self‐Corrosion of Aluminum in Alkaline Aluminum‐Air Batteries

“…In this regard, a number of studies have been conducted that utilize potassium sodium tartrate tetrahydrate (STT) and sodium stannate trihydrate (SST) as benign green inhibitors (viz. more environment friendly) with no undesirable anodic slime . The aim of the present study is to investigate the synergic effects of the abovementioned inhibitors to sustain a more inclined working condition for alkaline aluminum‐air batteries via reducing the corrosion phenomenon, originated from the reaction presented above through keeping a higher battery potential in comparison to other approaches such as saline aluminum‐air batteries or utilization of aluminum alloys in anode.…”

Experimental and Computational Studies of a Novel Metal Oxide Nanoparticle/Conducting Polymer Nanocomposite (TiO2/PVP) as a Corrosion Inhibitor on Low-Carbon Steel in Diprotic Acidic Medium

“…Multiple studies have reported that polymers and their nanocomposites are less hazardous corrosion inhibitors for various metals in various media. Many conducting polymers such as polyaniline (PANI), 6 poly(thiophene) (PTH), 7 poly(vinylpyrrolidone) (PVP), 8 polypyrrole, 9 etc. have been characterized and reported as low-toxic and environmentally benign corrosion inhibitors [Figure 1b].…”