CORROSIVITY OF THE TROPICAL ATMOSPHERE OF SOUTH VIETNAM

Abstract

Based on the results of annual corrosion tests at Kon Zo corrosion station, the southern branch of the Tropical Center in Ho Chi Minh City (Vietnam) determined the atmospheric corrosion rates of steel, copper, zinc, and aluminium. The corrosivity of atmosphere of Kon Zo corrosion station assessed in to relation to each metal according to the Methodology of international standard ISO 9223:2012 (Е). Using Dose-Response Functions (DRF) the corrosion rates of these metals for the first year (К1) were calculated with use of meteorological and aerochemical parameters of the atmosphere. A satisfactory correlation between the observed and calculated values for steel, copper and aluminium obtained. This indicates the possibility of using the DRF of international standard for determination the values К1 and corrosivity categories in areas of Vietnam.