Corrosion behavior of zinc metals in seawater

Abstract

The corros10n behavior of thin layer of zinc in three types of seawater has been investigated, and the result has confirmed that the significant corrosion process has occurred, as compared to the original surface. Pure zinc was chosen because it is one of the noble elements, which is hard to corrode and the result has proved that zinc was passively reacted towards seawater. Corrosion rate was determined based on the weight loss produced by zinc during immersion time. The corrosion rate was found to be nearly constant during all three experiments that have been carried out. The morphological surface of corroded zinc and the elemental mapping have been analyzed by SEM and EDS respectively.