INVESTIGADORES
GONZALEZ Maria Belen
artículos
Título:
Electrodeposition of polypyrrole on 316L stainless steel for corrosion prevention
Autor/es:
MARÍA BELÉN GONZÁLEZ; SILVANA BEATRIZ SAIDMAN
Revista:
CORROSION SCIENCE
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2011 vol. 53 p. 276 - 282
ISSN:
0010-938X
Resumen:
The electrosynthesis of polypyrrole films onto 316L stainless steel from near neutral and alkaline solutions containing molybdate and nitrate is reported. The corrosion behavior of the coated electrodes was investigated in NaCl solutions by electrochemical techniques and scanning electron microscopy. The polymer formed potentiostatically in a solution of pH 12 is the most efficient in terms of adhesion and corrosion protection. The coating significantly reduces the pitting corrosion of the substrate. The results are interpreted in terms of the nature of dopants, the good electroactivity of the polymer formed in alkaline solution and the passivating properties of the oxide layer.
