Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Environmental Factors Affecting the Corrosion of Galvanized Steel.
Author Haynie, F. H. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1986
Report Number EPA/600/D-86/061;
Stock Number PB86-174075
Additional Subjects Corrosion ; Steels ; Galvanized materials ; Environmental tests ;
Library Call Number Additional Info Location Last
NTIS  PB86-174075 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 19p
Galvanized steel samples were exposed for periods of up to 30 months at nine air monitoring sites in the St. Louis, Missouri area. Climatic and air quality data were recorded during the exposure periods and were subjected to a rigorous evaluation to eliminate recording errors and to estimate missing values. Weight loss was used as the measure of zinc corrosion on the galvanized steel. Corrosion rate was evaluated with respect to (1) fluxes of pollutants (sulfur oxides, nitrogen oxides, oxidants, and particles) to the galvanized steel during both wet and dry periods, (2) temperature and (3) amount of rainfall at Lambert field (airport). Different definitions of when the galvanized steel was wet were evaluated to determine the most likely 'critical relative humidity'. A theoretical model of film buildup and dissolution was developed to explain how factors affect corrosion rates. Non-linear and linear multiple regression techniques were used to determine the statistical significance of each factor.