Abstract

ROMERO, Nathalie et al. Evaluation of duplex coating’s system in tropical marine environments. Rev. Téc. Ing. Univ. Zulia [online]. 2007, vol.30, n.Especial, pp.178-187. ISSN 0254-0770.

In this work nine different coating systems, from national suppliers, were selected to perform the evaluation in two severe tropical marine environments. New galvanized profiles as well as pre-exposed to the same environmental conditions were used as the test probes. Two different field stations were selected: La Voz and The Cross of Maracaibo Lake. Additionally, accelerated test were carried out in a station located at Centro de Estudios de Corrosión (CEC) by using the standard ISO 11474, and in the laboratory (PROHESION chamber). It is important to emphasize that after more than 36 month-exposure the behavior of the different coating systems on pre-exposed galvanized was clear, permitting to select the coating system with the best performance. Nevertheless in the case of new galvanized probes, after the evaluation period, most of the duplex systems had a very good performance.

Keywords : Coatings; duplex; corrosion; tropical marine environmental.