Improvement of protection performance of polypyrrole by dopant anions

Autor: Le Minh Duc, Waldfried Plieth, Ursula Rammelt
Rok vydání: 2005
Předmět:
Zdroj: Journal of Applied Electrochemistry. 35:1225-1230
ISSN: 1572-8838
0021-891X
DOI: 10.1007/s10800-005-9033-7
Popis: Electropolymerization of pyrrole on mild steel was carried out in 0.01 m sodium molybdate and 0.1 m pyrrole solution at constant current 1.5 mA cm−2. The film is homogenous and adherent. The corrosion protection of polypyrrole films containing inhibitor anion molybdate as dopant anion was investigated with open circuit potential (OCP) in 0.1 m NaCl. The passivating effect of molybdate was demonstrated. The mobility of anion was investigated by cyclic voltammetry (CV), electrochemical quartz microbalance (EQCM) and electrochemical impedance spectroscopy (EIS) measurements.
Databáze: OpenAIRE