Anti-Corrosion Properties of Polyaniline Coating (CROSBI ID 25603)
Prilog u knjizi | izvorni znanstveni rad
Podaci o odgovornosti
Kraljić, Marijana ; Mandić, Zoran ; Duić, Ljerka
engleski
Anti-Corrosion Properties of Polyaniline Coating
Polyaniline (PANI) coatings were electrosynthesised on steel samples (13 precentage and 5 precentage of Cr) using sulfuric and phosphoric acids as supporting electrolytes. The protective properties of the coatings in the supporting electrolytes were investigated by monitoring open-circuit potential versus time, and by applying EIS (electrochemical impedance spectroscopy). Polyaniline films have been found to provide corrosion protection. Thicker PANI films have capacitive behaviour at low frequencies with small resistance at high frequencies. Similar results were obtained on Pt. Thinner films exhibit much higher resistance probably because a significant amount of PANI is transformed from emeraldine (EM) to leucoemeraldine (LE). The protective film deposited in a phosphate solution seemed to have better properties than the film deposited in a sulfate solution and therefore this film was also tested in 0.1 molL^-1 HCl. In the chloride-containing solution, the time of protection was significantly shorter.
polyaniline coating, corrosion protection, sulfuric acid, phosphoric acid, hydrochlorid acid, stainless steel, low alloy steel, EIS
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Podaci o prilogu
87-99-x.
objavljeno
Podaci o knjizi
Electrochemical Approach to Selected Corrosion and Corrosion Control Studies
Bonora, P.L. ; Deflorian, F. ;
London : Delhi: IOM Communications
2000.
1-86125-110-6