Abstract
A flow reactor and experimental technique were developed to study the variables controlling the SO 2 and H 2SO 4 (aerosol) pollutant induced corrosion of zinc. The experimental technique allowed deposition velocities to be determined for both accumulation mode H 2SO 4 aerosols and SO 2 gas at equivalent frictional velocities, while providing an electrochemical technique to observe corrosion processes in real time. Experimental measurements indicate that the principal factors affecting sulfur pollutant induced corrosion are surface wetness, pollutant flux to the surface and the chemical form of the pollutant. The overall results show that under urban environmental conditions, corrosion damage by SO 2 will dominate over that from H 2SO 4 aerosols.
Published Version
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