Corrosion protection of mild steel by nano-colloidal polyaniline/nanodiamond composite coating in NaCl solution

Effect of functionalization of carbon nanotubes on mechanical and electrochemical behavior of polyaniline nanocomposite coatings

“…Pure PANI coated MS had the E corr value of -610 mV, which designates the slight shift of potential in the nobler direction with respect to the uncoated MS. The obtained results were consistent with the results attained by the previous reports and revealed the shift of potential in nobler direction, when mild steel samples coated with PANI coatings[33][34][35]. The E corr values for PCNT1 and PCNT2 coated MS substrates were found to be -527 and -467 mV, respectively.…”

Recent Developments on the Use of Polymers as Corrosion Inhibitors - A Review

“…The results of the work reveal that the inhibition efficiency of AM-4VP-9 was synergistically improved by the addition of KI and the inhibiting effect of the system (AM-4VP-9 + KI) increased with increasing immersion time. Ashassi-Sorkhabi and Es'haghi [48] synthesized polyaniline/ nanodiamond (PANI/ND) nanocomposite coating on mild steel through electrochemical polymerization using cyclic voltammetry technique. The corrosion performance of the coating was studied in 3.5% NaCl solution by electrochemical impedance spectroscopy (EIS), polarization, and salt spray methods.…”

Facile fabrication of superhydrophobic polyaniline structures and their anticorrosive properties

“…The semicircle at low frequency region equals to the response at metal/polymer interface and the one at high frequency region vests in the process at polymer/electrolyte, 28 and the high frequency feature can be attributed to the coating. 38 It can be seen from Figure 7 and Table II that one semicircle was present, the charge transfer resistance (R ct ) of bare stainless steel, stainless steel coated by PANI, PANI-PEG1, PANI-CTAB1, and PANI-SDBS1 are 0.220, 0.894, 8.751, 2.252, and 2.139 kXcm 2 , respectively, and other specimens show same trend. That's because the superhydrophobic surface blocks the corrosive medium and the electrode surface and an air protection shield function is achieved, which reduces the electron transfer ability between the electrode and the medium, and slows down the process of corrosion reaction.…”

“…The impedance spectra of bare stainless steel and PANI‐coated stainless steel in 3.5% NaCl are shown in Figure in the form of Nyquist plots. The semicircle at low frequency region equals to the response at metal/polymer interface and the one at high frequency region vests in the process at polymer/electrolyte, and the high frequency feature can be attributed to the coating . It can be seen from Figure and Table that one semicircle was present, the charge transfer resistance ( R ct ) of bare stainless steel, stainless steel coated by PANI, PANI‐PEG1, PANI‐CTAB1, and PANI‐SDBS1 are 0.220, 0.894, 8.751, 2.252, and 2.139 kΩcm 2 , respectively, and other specimens show same trend.…”