PRELIMINARY STUDY ON THE CORROSION BEHAVIOR OF A3 STEEL INPOLLUTED FRESHWATER

摘要

The corrosion behavior of A3 steel in eutrophic and clean water was studied by immersion test and electrochemical measurements. Result of immersion tests in eutrophic and clean water shows that the decrease of dissolving oxygen concentration and the existence of pollutants both caused by eutrophication results in the decrease of corrosion rate of A3 steel. electrochemical measurements in simulated solution shows that phosphoric compounds have inhibiting effect on the corrosion of A3 steels while the nitric compounds have no influence on it.