Corrosion protection assessment of nanoparticulate pre-treated galvanized steel/paint systems subjected to accelerated tests

C. I. ELSNER; C.R. TOMACHUK; F. MARTINS QUEIROZ; P. R. SERÉ; A.R.DISARLI

Materials Science: An Indian Journal

Trade Science Inc

Año: 2016 vol. 14 p. 255 - 266

0974-7486

The development of environmentally friendly anticorrosive systemsproviding the same performance than those already existing has been thegreat challenge for researchers working in the surface treatment field. In thiswork the corrosion behavior of two electrogalvanized-steel/nanoparticulatepretreatment/organic coating systems exposed to salt spray, controlledhumidity and temperature, Prohesion or weathering chambers was studied.The global analysis of the obtained results allowed concluding that theprotective behavior of both duplex systems was satisfactory, and that thenanoparticulate pretreatments based on trivalent chromium (Cr3+) andZirconium could be considered as a valid alternative to substitute thosebased on hexavalent chromium(Cr6+).