Atmospheric corrosion tests in Brazilian Legal Amazon - field and laboratory tests

Abstract

This paper presents the first results concerning tests carried out to evaluate the atmospheric corrosion in Brazilian Legal Amazon, as part of the SIVAM – Amazon Surveillance System. The aim of the present work is to determine and select materials as well as anti‐rust paints, which will be employed to protect metallic structures of radar towers, equipment and buildings. Five anti‐rust paints on mild and galvanised steels were tested. Field tests are supported by accelerated laboratory results in wet and drying cycles in electrolytes simulating different microclimates. These solutions were prepared in laboratory based on pH, conductivity and chloride content values of locally collected rainwater.