Resumo

SUAREZ-CORRALES, Xenia Isbel; VILLAR-LOPEZ, René Valentino; CORVO-PEREZ, Francisco Eduardo  e  MARRERO, Rigoberto. Tropical Weather Resistant Galvanized Steel Coated and Uncoated. Ing. invest. y tecnol. [online]. 2014, vol.15, n.1, pp.29-40. ISSN 2594-0732.

The corrosion behavior of coated and uncoated galvanized steel products is determined by exposing them to accelerated and natural climatic test. Accelerated tests were carried out in climatic chambers and natural atmospheric test in a marine-coastal station (Cojimar). The influence of tropical humid climate on these products is determined. Adhesion is an important property for a good performance, from the decorative point of view or as an additional protection. The evaluation indicates that 95% of the galvanized steel products show a good corrosion resistance; although 71% of coated galvanized products and 100% of painted galvanized products do not cover the requirements with respect to the mechanical and corrosion protection aspects. For a good efficiency and economic performance of metal mechanical industry, a correct surface treatment and coating application is required. A key point is to increase the quality by improving a better corrosion protective performance respecting uncoated galvanized steel.

Palavras-chave : corrosion; galvanized steel; coating; tropical climate.